* putting latest MDB2 into SVN

* adding MDB2 drivers for mssql, mysql, mysqli, pgsql, sqlite
author: till <till@php.net> 2008-02-03 12:58:34 +0000
committer: till <till@php.net> 2008-02-03 12:58:34 +0000
commit: 95ebbc985a0e64a364e880de89dbc1ae7952d91e (patch)
tree: 78474efc88790b6d88e4976b51c7bebb5d017a37 /program/lib/MDB2/Driver/Manager
parent: 9f5bd376b47f41924ede3d8136302d0f7b81c89f (diff)
6 files changed, 5971 insertions, 0 deletions
diff --git a/program/lib/MDB2/Driver/Manager/Common.php b/program/lib/MDB2/Driver/Manager/Common.php
new file mode 100644
index 000000000..da2e329ef
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/Common.php
@@ -0,0 +1,935 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: Common.php,v 1.68 2007/12/03 20:59:15 quipo Exp $
+//
+
+/**
+ * @package  MDB2
+ * @category Database
+ * @author   Lukas Smith <smith@pooteeweet.org>
+ */
+
+/**
+ * Base class for the management modules that is extended by each MDB2 driver
+ *
+ * To load this module in the MDB2 object:
+ * $mdb->loadModule('Manager');
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Manager_Common extends MDB2_Module_Common
+{
+    // {{{ splitTableSchema()
+
+    /**
+     * Split the "[owner|schema].table" notation into an array
+     * @access private
+     */
+    function splitTableSchema($table)
+    {
+        $ret = array();
+        if (strpos($table, '.') !== false) {
+            return explode('.', $table);
+        }
+        return array(null, $table);
+    }
+
+    // }}}
+    // {{{ getFieldDeclarationList()
+
+    /**
+     * Get declaration of a number of field in bulk
+     *
+     * @param array $fields  a multidimensional associative array.
+     *      The first dimension determines the field name, while the second
+     *      dimension is keyed with the name of the properties
+     *      of the field being declared as array indexes. Currently, the types
+     *      of supported field properties are as follows:
+     *
+     *      default
+     *          Boolean value to be used as default for this field.
+     *
+     *      notnull
+     *          Boolean flag that indicates whether this field is constrained
+     *          to not be set to null.
+     *
+     * @return mixed string on success, a MDB2 error on failure
+     * @access public
+     */
+    function getFieldDeclarationList($fields)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!is_array($fields) || empty($fields)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'missing any fields', __FUNCTION__);
+        }
+        foreach ($fields as $field_name => $field) {
+            $query = $db->getDeclaration($field['type'], $field_name, $field);
+            if (PEAR::isError($query)) {
+                return $query;
+            }
+            $query_fields[] = $query;
+        }
+        return implode(', ', $query_fields);
+    }
+
+    // }}}
+    // {{{ _fixSequenceName()
+
+    /**
+     * Removes any formatting in an sequence name using the 'seqname_format' option
+     *
+     * @param string $sqn string that containts name of a potential sequence
+     * @param bool $check if only formatted sequences should be returned
+     * @return string name of the sequence with possible formatting removed
+     * @access protected
+     */
+    function _fixSequenceName($sqn, $check = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $seq_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['seqname_format']).'$/i';
+        $seq_name = preg_replace($seq_pattern, '\\1', $sqn);
+        if ($seq_name && !strcasecmp($sqn, $db->getSequenceName($seq_name))) {
+            return $seq_name;
+        }
+        if ($check) {
+            return false;
+        }
+        return $sqn;
+    }
+
+    // }}}
+    // {{{ _fixIndexName()
+
+    /**
+     * Removes any formatting in an index name using the 'idxname_format' option
+     *
+     * @param string $idx string that containts name of anl index
+     * @return string name of the index with eventual formatting removed
+     * @access protected
+     */
+    function _fixIndexName($idx)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $idx_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['idxname_format']).'$/i';
+        $idx_name = preg_replace($idx_pattern, '\\1', $idx);
+        if ($idx_name && !strcasecmp($idx, $db->getIndexName($idx_name))) {
+            return $idx_name;
+        }
+        return $idx;
+    }
+
+    // }}}
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset, collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($database, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($database)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ _getCreateTableQuery()
+
+    /**
+     * Create a basic SQL query for a new table creation
+     *
+     * @param string $name    Name of the database that should be created
+     * @param array  $fields  Associative array that contains the definition of each field of the new table
+     * @param array  $options An associative array of table options
+     *
+     * @return mixed string (the SQL query) on success, a MDB2 error on failure
+     * @see createTable()
+     */
+    function _getCreateTableQuery($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!$name) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no valid table name specified', __FUNCTION__);
+        }
+        if (empty($fields)) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no fields specified for table "'.$name.'"', __FUNCTION__);
+        }
+        $query_fields = $this->getFieldDeclarationList($fields);
+        if (PEAR::isError($query_fields)) {
+            return $query_fields;
+        }
+        if (!empty($options['primary'])) {
+            $query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $result = 'CREATE ';
+        if (!empty($options['temporary'])) {
+            $result .= $this->_getTemporaryTableQuery();
+        }
+        $result .= " TABLE $name ($query_fields)";
+        return $result;
+    }
+
+    // }}}
+    // {{{ _getTemporaryTableQuery()
+
+    /**
+     * A method to return the required SQL string that fits between CREATE ... TABLE
+     * to create the table as a temporary table.
+     *
+     * Should be overridden in driver classes to return the correct string for the
+     * specific database type.
+     *
+     * The default is to return the string "TEMPORARY" - this will result in a
+     * SQL error for any database that does not support temporary tables, or that
+     * requires a different SQL command from "CREATE TEMPORARY TABLE".
+     *
+     * @return string The string required to be placed between "CREATE" and "TABLE"
+     *                to generate a temporary table, if possible.
+     */
+    function _getTemporaryTableQuery()
+    {
+        return 'TEMPORARY';
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *                          array(
+     *                              'id' => array(
+     *                                  'type' => 'integer',
+     *                                  'unsigned' => 1
+     *                                  'notnull' => 1
+     *                                  'default' => 0
+     *                              ),
+     *                              'name' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              ),
+     *                              'password' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              )
+     *                          );
+     * @param array $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'temporary' => true|false,
+     *                          );
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $query = $this->_getCreateTableQuery($name, $fields, $options);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropTable()
+
+    /**
+     * drop an existing table
+     *
+     * @param string $name name of the table that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropTable($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("DROP TABLE $name");
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implementedd', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     *               NB: not all the drivers can get the view names from
+     *               a database other than the current one
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTableViews()
+
+    /**
+     * list the views in the database that reference a given table
+     *
+     * @param string table for which all referenced views should be found
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableViews($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @param string database, the current is default.
+     *               NB: not all the drivers can get the table names from
+     *               a database other than the current one
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function supports() to determine whether the DBMS driver can manage indexes.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $name");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string    $table       name of the table on which the constraint is to be created
+     * @param string    $name        name of the constraint to be created
+     * @param array     $definition  associative array that defines properties of the constraint to be created.
+     *                               The full structure of the array looks like this:
+     *          <pre>
+     *          array (
+     *              [primary] => 0
+     *              [unique]  => 0
+     *              [foreign] => 1
+     *              [check]   => 0
+     *              [fields] => array (
+     *                  [field1name] => array() // one entry per each field covered
+     *                  [field2name] => array() // by the index
+     *                  [field3name] => array(
+     *                      [sorting]  => ascending
+     *                      [position] => 3
+     *                  )
+     *              )
+     *              [references] => array(
+     *                  [table] => name
+     *                  [fields] => array(
+     *                      [field1name] => array(  //one entry per each referenced field
+     *                           [position] => 1
+     *                      )
+     *                  )
+     *              )
+     *              [deferrable] => 0
+     *              [initiallydeferred] => 0
+     *              [onupdate] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
+     *              [ondelete] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
+     *              [match] => SIMPLE|PARTIAL|FULL
+     *          );
+     *          </pre>
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "ALTER TABLE $table ADD CONSTRAINT $name";
+        if (!empty($definition['primary'])) {
+            $query.= ' PRIMARY KEY';
+        } elseif (!empty($definition['unique'])) {
+            $query.= ' UNIQUE';
+        } elseif (!empty($definition['foreign'])) {
+            $query.= ' FOREIGN KEY';
+        }
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        if (!empty($definition['foreign'])) {
+            $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
+            $referenced_fields = array();
+            foreach (array_keys($definition['references']['fields']) as $field) {
+                $referenced_fields[] = $db->quoteIdentifier($field, true);
+            }
+            $query .= ' ('. implode(', ', $referenced_fields) . ')';
+            $query .= $this->_getAdvancedFKOptions($definition);
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("ALTER TABLE $table DROP CONSTRAINT $name");
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name     name of the sequence to be created
+     * @param string    $start         start value of the sequence; default is 1
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @param string database, the current is default
+     *               NB: not all the drivers can get the sequence names from
+     *               a database other than the current one
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'method not implemented', __FUNCTION__);
+    }
+
+    // }}}
+}
+?>
+\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/mssql.php b/program/lib/MDB2/Driver/Manager/mssql.php
new file mode 100644
index 000000000..9cc66f3b7
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/mssql.php
@@ -0,0 +1,815 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Frank M. Kromann <frank@kromann.info>                       |
+// |          David Coallier <davidc@php.net>                             |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: mssql.php,v 1.93 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+// {{{ class MDB2_Driver_Manager_mssql
+
+/**
+ * MDB2 MSSQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Frank M. Kromann <frank@kromann.info>
+ * @author  David Coallier <davidc@php.net>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Manager_mssql extends MDB2_Driver_Manager_Common
+{
+    // {{{ createDatabase()
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $query = "CREATE DATABASE $name";
+        if ($db->options['database_device']) {
+            $query.= ' ON '.$db->options['database_device'];
+            $query.= $db->options['database_size'] ? '=' .
+                     $db->options['database_size'] : '';
+        }
+        if (!empty($options['collation'])) {
+            $query .= ' COLLATE ' . $options['collation'];
+        }
+        return $db->standaloneQuery($query, null, true);
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->standaloneQuery("DROP DATABASE $name", null, true);
+    }
+
+    // }}}
+    // {{{ _getTemporaryTableQuery()
+
+    /**
+     * Override the parent method.
+     *
+     * @return string The string required to be placed between "CREATE" and "TABLE"
+     *                to generate a temporary table, if possible.
+     */
+    function _getTemporaryTableQuery()
+    {
+        return '';
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     *
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array  $fields Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *
+     *                      Example
+     *                        array(
+     *
+     *                            'id' => array(
+     *                                'type' => 'integer',
+     *                                'unsigned' => 1,
+     *                                'notnull' => 1,
+     *                                'default' => 0,
+     *                            ),
+     *                            'name' => array(
+     *                                'type' => 'text',
+     *                                'length' => 12,
+     *                            ),
+     *                            'description' => array(
+     *                                'type' => 'text',
+     *                                'length' => 12,
+     *                            )
+     *                        );
+     * @param array $options An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'temporary' => true|false,
+     *                          );
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        if (!empty($options['temporary'])) {
+            $name = '#'.$name;
+        }
+        return parent::createTable($name, $fields, $options);
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string  $name    name of the table that is intended to be changed.
+     * @param array   $changes associative array that contains the details of each type
+     *                         of change that is intended to be performed. The types of
+     *                         changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check   indicates whether the function should just check if the DBMS driver
+     *                         can perform the requested table alterations if the value is true or
+     *                         actually perform them otherwise.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+                break;
+            case 'remove':
+                break;
+            case 'name':
+            case 'rename':
+            case 'change':
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $query = '';
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                } else {
+                    $query.= 'ADD COLUMN ';
+                }
+                $query.= $db->getDeclaration($field['type'], $field_name, $field);
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query.= 'DROP COLUMN ' . $field_name;
+            }
+        }
+
+        if (!$query) {
+            return MDB2_OK;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("ALTER TABLE $name $query");
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables()
+    {
+        $db =& $this->getDBInstance();
+
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'EXEC sp_tables @table_type = "\'TABLE\'"';
+        $table_names = $db->queryCol($query, null, 2);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if (!$this->_fixSequenceName($table_name, true)) {
+                $result[] = $table_name;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                        'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     *
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        $table = $db->quoteIdentifier($table, true);
+        $columns = $db->queryCol("SELECT c.name
+                                    FROM syscolumns c
+                               LEFT JOIN sysobjects o ON c.id = o.id
+                                   WHERE o.name = '$table'");
+        if (PEAR::isError($columns)) {
+            return $columns;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $columns);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     *
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'INDEX_NAME';
+        $pk_name = 'PK_NAME';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $pk_name  = strtolower($pk_name);
+            } else {
+                $key_name = strtoupper($key_name);
+                $pk_name  = strtoupper($pk_name);
+            }
+        }
+        $table = $db->quote($table, 'text');
+        $query = "EXEC sp_statistics @table_name=$table";
+        $indexes = $db->queryCol($query, 'text', $key_name);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+        $query = "EXEC sp_pkeys @table_name=$table";
+        $pk_all = $db->queryCol($query, 'text', $pk_name);
+        $result = array();
+        foreach ($indexes as $index) {
+            if (!in_array($index, $pk_all) && ($index = $this->_fixIndexName($index))) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SELECT name FROM sys.databases');
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SELECT DISTINCT loginame FROM master..sysprocesses');
+        if (PEAR::isError($result) || empty($result)) {
+            return $result;
+        }
+        foreach (array_keys($result) as $k) {
+            $result[$k] = trim($result[$k]);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name
+                    FROM sysobjects
+                   WHERE objectproperty(id, N'IsMSShipped') = 0
+                    AND (objectproperty(id, N'IsTableFunction') = 1
+                     OR objectproperty(id, N'IsScalarFunction') = 1)";
+        /*
+        SELECT ROUTINE_NAME
+          FROM INFORMATION_SCHEMA.ROUTINES
+         WHERE ROUTINE_TYPE = 'FUNCTION'
+        */
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     *
+     * @return mixed array of trigger names on success,  otherwise, false which
+     *               could be a db error if the db is not instantiated or could
+     *               be the results of the error that occured during the
+     *               querying of the sysobject module.
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $query = "SELECT o.name
+                    FROM sysobjects o
+                   WHERE xtype = 'TR'
+                     AND OBJECTPROPERTY(o.id, 'IsMSShipped') = 0";
+        if (!is_null($table)) {
+            $query .= " AND object_name(parent_obj) = $table";
+        }
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE &&
+            $db->options['field_case'] == CASE_LOWER)
+        {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     *
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name
+                    FROM sysobjects
+                   WHERE xtype = 'V'";
+        /*
+        SELECT *
+          FROM sysobjects
+         WHERE objectproperty(id, N'IsMSShipped') = 0
+           AND objectproperty(id, N'IsView') = 1
+        */
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE &&
+            $db->options['field_case'] == CASE_LOWER)
+        {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                          'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string $table name of table that should be used in method
+     * @param string $name  name of the index to be dropped
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $table.$name");
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     *
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        $table = $db->quoteIdentifier($table, true);
+        
+        $query = "SELECT c.constraint_name
+                    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
+                   WHERE c.constraint_catalog = DB_NAME()
+                     AND c.table_name = '$table'";
+        $constraints = $db->queryCol($query);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        $result = array();
+        foreach ($constraints as $constraint) {
+            $constraint = $this->_fixIndexName($constraint);
+            if (!empty($constraint)) {
+                $result[$constraint] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string $seq_name  name of the sequence to be created
+     * @param string $start     start value of the sequence; default is 1
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        $query = "CREATE TABLE $sequence_name ($seqcol_name " .
+                 "INT PRIMARY KEY CLUSTERED IDENTITY($start,1) NOT NULL)";
+
+        $res = $db->exec($query);
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+
+        $query = "SET IDENTITY_INSERT $sequence_name ON ".
+                 "INSERT INTO $sequence_name ($seqcol_name) VALUES ($start)";
+        $res = $db->exec($query);
+
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * This function drops an existing sequence
+     *
+     * @param string $seq_name name of the sequence to be dropped
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sysobjects WHERE xtype = 'U'";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
+                          'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+
+// }}}
+?>
+\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/mysql.php b/program/lib/MDB2/Driver/Manager/mysql.php
new file mode 100644
index 000000000..84109be27
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/mysql.php
@@ -0,0 +1,1064 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysql.php,v 1.100 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Manager_mysql extends MDB2_Driver_Manager_Common
+{
+
+    // }}}
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset, collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name  = $db->quoteIdentifier($name, true);
+        $query = 'CREATE DATABASE ' . $name;
+        if (!empty($options['charset'])) {
+            $query .= ' DEFAULT CHARACTER SET ' . $options['charset'];
+        }
+        if (!empty($options['collation'])) {
+            $query .= ' COLLATE ' . $options['collation'];
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $query = "DROP DATABASE $name";
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *                          array(
+     *                              'id' => array(
+     *                                  'type' => 'integer',
+     *                                  'unsigned' => 1
+     *                                  'notnull' => 1
+     *                                  'default' => 0
+     *                              ),
+     *                              'name' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              ),
+     *                              'password' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              )
+     *                          );
+     * @param array $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = $this->_getCreateTableQuery($name, $fields, $options);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'rename':
+            case 'name':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $query = '';
+        if (!empty($changes['name'])) {
+            $change_name = $db->quoteIdentifier($changes['name'], true);
+            $query .= 'RENAME TO ' . $change_name;
+        }
+
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query.= 'DROP ' . $field_name;
+            }
+        }
+
+        $rename = array();
+        if (!empty($changes['rename']) && is_array($changes['rename'])) {
+            foreach ($changes['rename'] as $field_name => $field) {
+                $rename[$field['name']] = $field_name;
+            }
+        }
+
+        if (!empty($changes['change']) && is_array($changes['change'])) {
+            foreach ($changes['change'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                if (isset($rename[$field_name])) {
+                    $old_field_name = $rename[$field_name];
+                    unset($rename[$field_name]);
+                } else {
+                    $old_field_name = $field_name;
+                }
+                $old_field_name = $db->quoteIdentifier($old_field_name, true);
+                $query.= "CHANGE $old_field_name " . $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
+            }
+        }
+
+        if (!empty($rename) && is_array($rename)) {
+            foreach ($rename as $rename_name => $renamed_field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field = $changes['rename'][$renamed_field];
+                $renamed_field = $db->quoteIdentifier($renamed_field, true);
+                $query.= 'CHANGE ' . $renamed_field . ' ' . $db->getDeclaration($field['definition']['type'], $field['name'], $field['definition']);
+            }
+        }
+
+        if (!$query) {
+            return MDB2_OK;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("ALTER TABLE $name $query");
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SHOW DATABASES');
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->queryCol('SELECT DISTINCT USER FROM mysql.USER');
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM mysql.proc";
+        /*
+        SELECT ROUTINE_NAME
+          FROM INFORMATION_SCHEMA.ROUTINES
+         WHERE ROUTINE_TYPE = 'FUNCTION'
+        */
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW TRIGGERS';
+        if (!is_null($table)) {
+            $table = $db->quote($table, 'text');
+            $query .= " LIKE $table";
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW /*!50002 FULL*/ TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $query.= "/*!50002  WHERE Table_type = 'BASE TABLE'*/";
+
+        $table_names = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table) {
+            if (!$this->_fixSequenceName($table[0], true)) {
+                $result[] = $table[0];
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW FULL TABLES';
+        if (!is_null($database)) {
+            $query.= " FROM $database";
+        }
+        $query.= " WHERE Table_type = 'VIEW'";
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $result = $db->queryCol("SHOW COLUMNS FROM $table");
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @author Leoncx
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function supports() to determine whether the DBMS driver can manage indexes.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                                'length' => 10
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field => $fieldinfo) {
+            if (!empty($fieldinfo['length'])) {
+                $fields[] = $db->quoteIdentifier($field, true) . '(' . $fieldinfo['length'] . ')';
+            } else {
+                $fields[] = $db->quoteIdentifier($field, true);
+            }
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $name ON $table");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table";
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if ($index_data[$non_unique] && ($index = $this->_fixIndexName($index_data[$key_name]))) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string    $table        name of the table on which the constraint is to be created
+     * @param string    $name         name of the constraint to be created
+     * @param array     $definition   associative array that defines properties of the constraint to be created.
+     *                                Currently, only one property named FIELDS is supported. This property
+     *                                is also an associative with the names of the constraint fields as array
+     *                                constraints. Each entry of this array is set to another type of associative
+     *                                array that specifies properties of the constraint that are specific to
+     *                                each field.
+     *
+     *                                Example
+     *                                   array(
+     *                                       'fields' => array(
+     *                                           'user_name' => array(),
+     *                                           'last_login' => array()
+     *                                       )
+     *                                   )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $type = '';
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        if (!empty($definition['primary'])) {
+            $type = 'PRIMARY';
+            $name = 'KEY';
+        } elseif (!empty($definition['unique'])) {
+            $type = 'UNIQUE';
+        } elseif (!empty($definition['foreign'])) {
+            $type = 'CONSTRAINT';
+        }
+        if (empty($type)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'invalid definition, could not create constraint', __FUNCTION__);
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "ALTER TABLE $table ADD $type $name";
+        if (!empty($definition['foreign'])) {
+            $query .= ' FOREIGN KEY ';
+        }
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        if (!empty($definition['foreign'])) {
+            $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
+            $referenced_fields = array();
+            foreach (array_keys($definition['references']['fields']) as $field) {
+                $referenced_fields[] = $db->quoteIdentifier($field, true);
+            }
+            $query .= ' ('. implode(', ', $referenced_fields) . ')';
+            $query .= $this->_getAdvancedFKOptions($definition);
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        if ($primary || strtolower($name) == 'primary') {
+            $query = "ALTER TABLE $table DROP PRIMARY KEY";
+        } else {
+            $name = $db->quoteIdentifier($db->getIndexName($name), true);
+            $query = "ALTER TABLE $table DROP INDEX $name";
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $query = 'SHOW INDEX FROM ' . $db->quoteIdentifier($table, true);
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if (!$index_data[$non_unique]) {
+                if ($index_data[$key_name] !== 'PRIMARY') {
+                    $index = $this->_fixIndexName($index_data[$key_name]);
+                } else {
+                    $index = 'PRIMARY';
+                }
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+        
+        //list FOREIGN KEY constraints...
+        $query = 'SHOW CREATE TABLE '. $db->escape($table);
+        $definition = $db->queryOne($query, 'text', 1);
+        if (!PEAR::isError($definition) && !empty($definition)) {
+            $pattern = '/\bCONSTRAINT\s+([^\s]+)\s+FOREIGN KEY\b/i';
+            if (preg_match_all($pattern, str_replace('`', '', $definition), $matches) > 1) {
+                foreach ($matches[1] as $constraint) {
+                    $result[$constraint] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name name of the sequence to be created
+     * @param string    $start    start value of the sequence; default is 1
+     * @param array     $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        $query = "CREATE TABLE $sequence_name ($seqcol_name INT NOT NULL AUTO_INCREMENT, PRIMARY KEY ($seqcol_name))";
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $res = $db->exec($query);
+
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+
+        if ($start == 1) {
+            return MDB2_OK;
+        }
+
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')';
+        $res = $db->exec($query);
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+
+        // Handle error
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+?>
+\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/mysqli.php b/program/lib/MDB2/Driver/Manager/mysqli.php
new file mode 100644
index 000000000..42782fca5
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/mysqli.php
@@ -0,0 +1,1067 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id: mysqli.php,v 1.87 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQLi driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_Manager_mysqli extends MDB2_Driver_Manager_Common
+{
+
+    // }}}
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset, collation info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name  = $db->quoteIdentifier($name, true);
+        $query = 'CREATE DATABASE ' . $name;
+        if (!empty($options['charset'])) {
+            $query .= ' DEFAULT CHARACTER SET ' . $options['charset'];
+        }
+        if (!empty($options['collation'])) {
+            $query .= ' COLLATE ' . $options['collation'];
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $query = "DROP DATABASE $name";
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     *                       The indexes of the array entries are the names of the fields of the table an
+     *                       the array entry values are associative arrays like those that are meant to be
+     *                       passed with the field definitions to get[Type]Declaration() functions.
+     *                          array(
+     *                              'id' => array(
+     *                                  'type' => 'integer',
+     *                                  'unsigned' => 1
+     *                                  'notnull' => 1
+     *                                  'default' => 0
+     *                              ),
+     *                              'name' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              ),
+     *                              'password' => array(
+     *                                  'type' => 'text',
+     *                                  'length' => 12
+     *                              )
+     *                          );
+     * @param array $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = $this->_getCreateTableQuery($name, $fields, $options);
+        if (PEAR::isError($query)) {
+            return $query;
+        }
+
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $result = $db->exec($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'rename':
+            case 'name':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $query = '';
+        if (!empty($changes['name'])) {
+            $change_name = $db->quoteIdentifier($changes['name'], true);
+            $query .= 'RENAME TO ' . $change_name;
+        }
+
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query.= 'DROP ' . $field_name;
+            }
+        }
+
+        $rename = array();
+        if (!empty($changes['rename']) && is_array($changes['rename'])) {
+            foreach ($changes['rename'] as $field_name => $field) {
+                $rename[$field['name']] = $field_name;
+            }
+        }
+
+        if (!empty($changes['change']) && is_array($changes['change'])) {
+            foreach ($changes['change'] as $field_name => $field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                if (isset($rename[$field_name])) {
+                    $old_field_name = $rename[$field_name];
+                    unset($rename[$field_name]);
+                } else {
+                    $old_field_name = $field_name;
+                }
+                $old_field_name = $db->quoteIdentifier($old_field_name, true);
+                $query.= "CHANGE $old_field_name " . $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
+            }
+        }
+
+        if (!empty($rename) && is_array($rename)) {
+            foreach ($rename as $rename_name => $renamed_field) {
+                if ($query) {
+                    $query.= ', ';
+                }
+                $field = $changes['rename'][$renamed_field];
+                $renamed_field = $db->quoteIdentifier($renamed_field, true);
+                $query.= 'CHANGE ' . $renamed_field . ' ' . $db->getDeclaration($field['definition']['type'], $field['name'], $field['definition']);
+            }
+        }
+
+        if (!$query) {
+            return MDB2_OK;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("ALTER TABLE $name $query");
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->queryCol('SHOW DATABASES');
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->queryCol('SELECT DISTINCT USER FROM mysql.USER');
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM mysql.proc";
+        /*
+        SELECT ROUTINE_NAME
+          FROM INFORMATION_SCHEMA.ROUTINES
+         WHERE ROUTINE_TYPE = 'FUNCTION'
+        */
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW TRIGGERS';
+        if (!is_null($table)) {
+            $table = $db->quote($table, 'text');
+            $query .= " LIKE $table";
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW /*!50002 FULL*/ TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $query.= "/*!50002  WHERE Table_type = 'BASE TABLE'*/";
+
+        $table_names = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table) {
+            if (!$this->_fixSequenceName($table[0], true)) {
+                $result[] = $table[0];
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SHOW FULL TABLES';
+        if (!is_null($database)) {
+            $query.= " FROM $database";
+        }
+        $query.= " WHERE Table_type = 'VIEW'";
+
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $result = $db->queryCol("SHOW COLUMNS FROM $table");
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @author Leoncx
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function supports() to determine whether the DBMS driver can manage indexes.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                                'length' => 10
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field => $fieldinfo) {
+            if (!empty($fieldinfo['length'])) {
+                $fields[] = $db->quoteIdentifier($field, true) . '(' . $fieldinfo['length'] . ')';
+            } else {
+                $fields[] = $db->quoteIdentifier($field, true);
+            }
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        return $db->exec("DROP INDEX $name ON $table");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "SHOW INDEX FROM $table";
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if ($index_data[$non_unique] && ($index = $this->_fixIndexName($index_data[$key_name]))) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string    $table         name of the table on which the constraint is to be created
+     * @param string    $name         name of the constraint to be created
+     * @param array     $definition        associative array that defines properties of the constraint to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the constraint fields as array
+     *                                 constraints. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the constraint that are specific to
+     *                                 each field.
+     *
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $type = '';
+        $name = $db->quoteIdentifier($db->getIndexName($name), true);
+        if (!empty($definition['primary'])) {
+            $type = 'PRIMARY';
+            $name = 'KEY';
+        } elseif (!empty($definition['unique'])) {
+            $type = 'UNIQUE';
+        } elseif (!empty($definition['foreign'])) {
+            $type = 'CONSTRAINT';
+        }
+        if (empty($type)) {
+            return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                'invalid definition, could not create constraint', __FUNCTION__);
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $query = "ALTER TABLE $table ADD $type $name";
+        if (!empty($definition['foreign'])) {
+            $query .= ' FOREIGN KEY ';
+        }
+        $fields = array();
+        foreach (array_keys($definition['fields']) as $field) {
+            $fields[] = $db->quoteIdentifier($field, true);
+        }
+        $query .= ' ('. implode(', ', $fields) . ')';
+        if (!empty($definition['foreign'])) {
+            $query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
+            $referenced_fields = array();
+            foreach (array_keys($definition['references']['fields']) as $field) {
+                $referenced_fields[] = $db->quoteIdentifier($field, true);
+            }
+            $query .= ' ('. implode(', ', $referenced_fields) . ')';
+            $query .= $this->_getAdvancedFKOptions($definition);
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        if ($primary || strtolower($name) == 'primary') {
+            $query = "ALTER TABLE $table DROP PRIMARY KEY";
+        } else {
+            $name = $db->quoteIdentifier($db->getIndexName($name), true);
+            $query = "ALTER TABLE $table DROP INDEX $name";
+        }
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $key_name = 'Key_name';
+        $non_unique = 'Non_unique';
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            if ($db->options['field_case'] == CASE_LOWER) {
+                $key_name = strtolower($key_name);
+                $non_unique = strtolower($non_unique);
+            } else {
+                $key_name = strtoupper($key_name);
+                $non_unique = strtoupper($non_unique);
+            }
+        }
+
+        $query = 'SHOW INDEX FROM ' . $db->quoteIdentifier($table, true);
+        $indexes = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index_data) {
+            if (!$index_data[$non_unique]) {
+                if ($index_data[$key_name] !== 'PRIMARY') {
+                    $index = $this->_fixIndexName($index_data[$key_name]);
+                } else {
+                    $index = 'PRIMARY';
+                }
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+
+        //list FOREIGN KEY constraints...
+        $query = 'SHOW CREATE TABLE '. $db->escape($table);
+        $definition = $db->queryOne($query, 'text', 1);
+        if (!PEAR::isError($definition) && !empty($definition)) {
+            $pattern = '/\bCONSTRAINT\s+([^\s]+)\s+FOREIGN KEY\b/i';
+            if (preg_match_all($pattern, str_replace('`', '', $definition), $matches) > 1) {
+                foreach ($matches[1] as $constraint) {
+                    $result[$constraint] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name name of the sequence to be created
+     * @param string    $start    start value of the sequence; default is 1
+     * @param array     $options  An associative array of table options:
+     *                          array(
+     *                              'comment' => 'Foo',
+     *                              'charset' => 'utf8',
+     *                              'collate' => 'utf8_unicode_ci',
+     *                              'type'    => 'innodb',
+     *                          );
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        
+        $options_strings = array();
+
+        if (!empty($options['comment'])) {
+            $options_strings['comment'] = 'COMMENT = '.$db->quote($options['comment'], 'text');
+        }
+
+        if (!empty($options['charset'])) {
+            $options_strings['charset'] = 'DEFAULT CHARACTER SET '.$options['charset'];
+            if (!empty($options['collate'])) {
+                $options_strings['charset'].= ' COLLATE '.$options['collate'];
+            }
+        }
+
+        $type = false;
+        if (!empty($options['type'])) {
+            $type = $options['type'];
+        } elseif ($db->options['default_table_type']) {
+            $type = $db->options['default_table_type'];
+        }
+        if ($type) {
+            $options_strings[] = "ENGINE = $type";
+        }
+
+        if (!empty($options_strings)) {
+            $query.= ' '.implode(' ', $options_strings);
+        }
+
+        $query = "CREATE TABLE $sequence_name ($seqcol_name INT NOT NULL AUTO_INCREMENT, PRIMARY KEY ($seqcol_name))";
+        if (!empty($options_strings)) {
+            $query .= ' '.implode(' ', $options_strings);
+        }
+        $res = $db->exec($query);
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+
+        if ($start == 1) {
+            return MDB2_OK;
+        }
+
+        $query = "INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')';
+        $res = $db->exec($query);
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+
+        // Handle error
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @param string database, the current is default
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences($database = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SHOW TABLES";
+        if (!is_null($database)) {
+            $query .= " FROM $database";
+        }
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+?>
+\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/pgsql.php b/program/lib/MDB2/Driver/Manager/pgsql.php
new file mode 100644
index 000000000..d5ebbc840
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/pgsql.php
@@ -0,0 +1,765 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Paul Cooper <pgc@ucecom.com>                                 |
+// +----------------------------------------------------------------------+
+//
+// $Id: pgsql.php,v 1.74 2007/12/03 20:59:15 quipo Exp $
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 MySQL driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Paul Cooper <pgc@ucecom.com>
+ */
+class MDB2_Driver_Manager_pgsql extends MDB2_Driver_Manager_Common
+{
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name  = $db->quoteIdentifier($name, true);
+        $query = 'CREATE DATABASE ' . $name;
+        if (!empty($options['charset'])) {
+            $query .= ' WITH ENCODING ' . $db->quote($options['charset'], 'text');
+        }
+        return $db->standaloneQuery($query, null, true);
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->standaloneQuery("DROP DATABASE $name", null, true);
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate'])) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete'])) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        if (!empty($definition['deferrable'])) {
+            $query .= ' DEFERRABLE';
+        } else {
+            $query .= ' NOT DEFERRABLE';
+        }
+        if (!empty($definition['initiallydeferred'])) {
+            $query .= ' INITIALLY DEFERRED';
+        } else {
+            $query .= ' INITIALLY IMMEDIATE';
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'name':
+            case 'rename':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'\" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        if (!empty($changes['add']) && is_array($changes['add'])) {
+            foreach ($changes['add'] as $field_name => $field) {
+                $query = 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
+                $result = $db->exec("ALTER TABLE $name $query");
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+
+        if (!empty($changes['remove']) && is_array($changes['remove'])) {
+            foreach ($changes['remove'] as $field_name => $field) {
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $query = 'DROP ' . $field_name;
+                $result = $db->exec("ALTER TABLE $name $query");
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+
+        if (!empty($changes['change']) && is_array($changes['change'])) {
+            foreach ($changes['change'] as $field_name => $field) {
+                $field_name = $db->quoteIdentifier($field_name, true);
+                if (!empty($field['definition']['type'])) {
+                    $server_info = $db->getServerVersion();
+                    if (PEAR::isError($server_info)) {
+                        return $server_info;
+                    }
+                    if (is_array($server_info) && $server_info['major'] < 8) {
+                        return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                            'changing column type for "'.$change_name.'\" requires PostgreSQL 8.0 or above', __FUNCTION__);
+                    }
+                    $db->loadModule('Datatype', null, true);
+                    $query = "ALTER $field_name TYPE ".$db->datatype->getTypeDeclaration($field['definition']);
+                    $result = $db->exec("ALTER TABLE $name $query");
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+                if (array_key_exists('default', $field['definition'])) {
+                    $query = "ALTER $field_name SET DEFAULT ".$db->quote($field['definition']['default'], $field['definition']['type']);
+                    $result = $db->exec("ALTER TABLE $name $query");
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+                if (!empty($field['definition']['notnull'])) {
+                    $query = "ALTER $field_name ".($field['definition']['notnull'] ? 'SET' : 'DROP').' NOT NULL';
+                    $result = $db->exec("ALTER TABLE $name $query");
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+            }
+        }
+
+        if (!empty($changes['rename']) && is_array($changes['rename'])) {
+            foreach ($changes['rename'] as $field_name => $field) {
+                $field_name = $db->quoteIdentifier($field_name, true);
+                $result = $db->exec("ALTER TABLE $name RENAME COLUMN $field_name TO ".$db->quoteIdentifier($field['name'], true));
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        if (!empty($changes['name'])) {
+            $change_name = $db->quoteIdentifier($changes['name'], true);
+            $result = $db->exec("ALTER TABLE $name RENAME TO ".$change_name);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+        }
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT datname FROM pg_database';
+        $result2 = $db->standaloneQuery($query, array('text'), false);
+        if (!MDB2::isResultCommon($result2)) {
+            return $result2;
+        }
+
+        $result = $result2->fetchCol();
+        $result2->free();
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT usename FROM pg_user';
+        $result2 = $db->standaloneQuery($query, array('text'), false);
+        if (!MDB2::isResultCommon($result2)) {
+            return $result2;
+        }
+
+        $result = $result2->fetchCol();
+        $result2->free();
+        return $result;
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT viewname
+                    FROM pg_views
+                   WHERE schemaname NOT IN ('pg_catalog', 'information_schema')
+                     AND viewname !~ '^pg_'";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableViews()
+
+    /**
+     * list the views in the database that reference a given table
+     *
+     * @param string table for which all referenced views should be found
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableViews($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT viewname FROM pg_views NATURAL JOIN pg_tables';
+        $query.= ' WHERE tablename ='.$db->quote($table, 'text');
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listFunctions()
+
+    /**
+     * list all functions in the current database
+     *
+     * @return mixed array of function names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listFunctions()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "
+            SELECT
+                proname
+            FROM
+                pg_proc pr,
+                pg_type tp
+            WHERE
+                tp.oid = pr.prorettype
+                AND pr.proisagg = FALSE
+                AND tp.typname <> 'trigger'
+                AND pr.pronamespace IN
+                    (SELECT oid FROM pg_namespace WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = 'SELECT trg.tgname AS trigger_name
+                    FROM pg_trigger trg,
+                         pg_class tbl
+                   WHERE trg.tgrelid = tbl.oid';
+        if (!is_null($table)) {
+            $table = $db->quote(strtoupper($table), 'text');
+            $query .= " AND tbl.relname = $table";
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        // gratuitously stolen from PEAR DB _getSpecialQuery in pgsql.php
+        $query = 'SELECT c.relname AS "Name"'
+            . ' FROM pg_class c, pg_user u'
+            . ' WHERE c.relowner = u.usesysid'
+            . " AND c.relkind = 'r'"
+            . ' AND NOT EXISTS'
+            . ' (SELECT 1 FROM pg_views'
+            . '  WHERE viewname = c.relname)'
+            . " AND c.relname !~ '^(pg_|sql_)'"
+            . ' UNION'
+            . ' SELECT c.relname AS "Name"'
+            . ' FROM pg_class c'
+            . " WHERE c.relkind = 'r'"
+            . ' AND NOT EXISTS'
+            . ' (SELECT 1 FROM pg_views'
+            . '  WHERE viewname = c.relname)'
+            . ' AND NOT EXISTS'
+            . ' (SELECT 1 FROM pg_user'
+            . '  WHERE usesysid = c.relowner)'
+            . " AND c.relname !~ '^pg_'";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $db->setLimit(1);
+        $result2 = $db->query("SELECT * FROM $table");
+        if (PEAR::isError($result2)) {
+            return $result2;
+        }
+        $result = $result2->getColumnNames();
+        $result2->free();
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return array_flip($result);
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $subquery = "SELECT indexrelid FROM pg_index, pg_class";
+        $subquery.= " WHERE pg_class.relname=$table AND pg_class.oid=pg_index.indrelid AND indisunique != 't' AND indisprimary != 't'";
+        $query = "SELECT relname FROM pg_class WHERE oid IN ($subquery)";
+        $indexes = $db->queryCol($query, 'text');
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $index) {
+            $index = $this->_fixIndexName($index);
+            if (!empty($index)) {
+                $result[$index] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $subquery = "SELECT indexrelid FROM pg_index, pg_class";
+        $subquery.= " WHERE pg_class.relname=$table AND pg_class.oid=pg_index.indrelid AND (indisunique = 't' OR indisprimary = 't')";
+        $query = "SELECT relname FROM pg_class WHERE oid IN ($subquery)";
+        $constraints = $db->queryCol($query);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        $result = array();
+        foreach ($constraints as $constraint) {
+            $constraint = $this->_fixIndexName($constraint);
+            if (!empty($constraint)) {
+                $result[$constraint] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            && $db->options['field_case'] == CASE_LOWER
+        ) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string $seq_name name of the sequence to be created
+     * @param string $start start value of the sequence; default is 1
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("CREATE SEQUENCE $sequence_name INCREMENT 1".
+            ($start < 1 ? " MINVALUE $start" : '')." START $start");
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string $seq_name name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP SEQUENCE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT relname FROM pg_class WHERE relkind = 'S' AND relnamespace IN";
+        $query.= "(SELECT oid FROM pg_namespace WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            $result[] = $this->_fixSequenceName($table_name);
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+}
+?>
+\ No newline at end of file
diff --git a/program/lib/MDB2/Driver/Manager/sqlite.php b/program/lib/MDB2/Driver/Manager/sqlite.php
new file mode 100644
index 000000000..f126ff146
--- /dev/null
+++ b/program/lib/MDB2/Driver/Manager/sqlite.php
@@ -0,0 +1,1325 @@
+<?php
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith, Lorenzo Alberton                       |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS  |
+// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT    |
+// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS    |
+// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE      |
+// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,          |
+// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
+// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
+// |  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED  |
+// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT          |
+// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
+// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE          |
+// | POSSIBILITY OF SUCH DAMAGE.                                          |
+// +----------------------------------------------------------------------+
+// | Authors: Lukas Smith <smith@pooteeweet.org>                          |
+// |          Lorenzo Alberton <l.alberton@quipo.it>                      |
+// +----------------------------------------------------------------------+
+//
+// $Id: sqlite.php,v 1.72 2007/12/03 20:59:15 quipo Exp $
+//
+
+require_once 'MDB2/Driver/Manager/Common.php';
+
+/**
+ * MDB2 SQLite driver for the management modules
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ * @author  Lorenzo Alberton <l.alberton@quipo.it>
+ */
+class MDB2_Driver_Manager_sqlite extends MDB2_Driver_Manager_Common
+{
+    // {{{ createDatabase()
+
+    /**
+     * create a new database
+     *
+     * @param string $name    name of the database that should be created
+     * @param array  $options array with charset info
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createDatabase($name, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $database_file = $db->_getDatabaseFile($name);
+        if (file_exists($database_file)) {
+            return $db->raiseError(MDB2_ERROR_ALREADY_EXISTS, null, null,
+                'database already exists', __FUNCTION__);
+        }
+        $php_errormsg = '';
+        $handle = @sqlite_open($database_file, $db->dsn['mode'], $php_errormsg);
+        if (!$handle) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                (isset($php_errormsg) ? $php_errormsg : 'could not create the database file'), __FUNCTION__);
+        }
+        if (!empty($options['charset'])) {
+            $query = 'PRAGMA encoding = ' . $db->quote($options['charset'], 'text');
+            @sqlite_query($query, $handle);
+        }
+        @sqlite_close($handle);
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropDatabase()
+
+    /**
+     * drop an existing database
+     *
+     * @param string $name name of the database that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropDatabase($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $database_file = $db->_getDatabaseFile($name);
+        if (!@file_exists($database_file)) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_DROP, null, null,
+                'database does not exist', __FUNCTION__);
+        }
+        $result = @unlink($database_file);
+        if (!$result) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_DROP, null, null,
+                (isset($php_errormsg) ? $php_errormsg : 'could not remove the database file'), __FUNCTION__);
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _getAdvancedFKOptions()
+
+    /**
+     * Return the FOREIGN KEY query section dealing with non-standard options
+     * as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
+     *
+     * @param array $definition
+     * @return string
+     * @access protected
+     */
+    function _getAdvancedFKOptions($definition)
+    {
+        $query = '';
+        if (!empty($definition['match'])) {
+            $query .= ' MATCH '.$definition['match'];
+        }
+        if (!empty($definition['onupdate']) && (strtoupper($definition['onupdate']) != 'NO ACTION')) {
+            $query .= ' ON UPDATE '.$definition['onupdate'];
+        }
+        if (!empty($definition['ondelete']) && (strtoupper($definition['ondelete']) != 'NO ACTION')) {
+            $query .= ' ON DELETE '.$definition['ondelete'];
+        }
+        if (!empty($definition['deferrable'])) {
+            $query .= ' DEFERRABLE';
+        } else {
+            $query .= ' NOT DEFERRABLE';
+        }
+        if (!empty($definition['initiallydeferred'])) {
+            $query .= ' INITIALLY DEFERRED';
+        } else {
+            $query .= ' INITIALLY IMMEDIATE';
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ _getCreateTableQuery()
+
+    /**
+     * Create a basic SQL query for a new table creation
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     * @param array $options  An associative array of table options
+     * @return mixed string (the SQL query) on success, a MDB2 error on failure
+     * @see createTable()
+     */
+    function _getCreateTableQuery($name, $fields, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!$name) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no valid table name specified', __FUNCTION__);
+        }
+        if (empty($fields)) {
+            return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
+                'no fields specified for table "'.$name.'"', __FUNCTION__);
+        }
+        $query_fields = $this->getFieldDeclarationList($fields);
+        if (PEAR::isError($query_fields)) {
+            return $query_fields;
+        }
+        if (!empty($options['primary'])) {
+            $query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
+        }
+        if (!empty($options['foreign_keys'])) {
+            foreach ($options['foreign_keys'] as $fkname => $fkdef) {
+                if (empty($fkdef)) {
+                    continue;
+                }
+                $query_fields.= ', CONSTRAINT '.$fkname.' FOREIGN KEY ('.implode(', ', array_keys($fkdef['fields'])).')';
+                $query_fields.= ' REFERENCES '.$fkdef['references']['table'].' ('.implode(', ', array_keys($fkdef['references']['fields'])).')';
+                $query_fields.= $this->_getAdvancedFKOptions($fkdef);
+            }
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        $result = 'CREATE ';
+        if (!empty($options['temporary'])) {
+            $result .= $this->_getTemporaryTableQuery();
+        }
+        $result .= " TABLE $name ($query_fields)";
+        return $result;
+    }
+
+    // }}}
+    // {{{ createTable()
+
+    /**
+     * create a new table
+     *
+     * @param string $name   Name of the database that should be created
+     * @param array $fields  Associative array that contains the definition of each field of the new table
+     * @param array $options  An associative array of table options
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createTable($name, $fields, $options = array())
+    {
+        $result = parent::createTable($name, $fields, $options);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        // create triggers to enforce FOREIGN KEY constraints
+        if (!empty($options['foreign_keys'])) {
+            $db =& $this->getDBInstance();
+            if (PEAR::isError($db)) {
+                return $db;
+            }
+            foreach ($options['foreign_keys'] as $fkname => $fkdef) {
+                if (empty($fkdef)) {
+                    continue;
+                }
+                //set actions to 'RESTRICT' if not set
+                $fkdef['onupdate'] = empty($fkdef['onupdate']) ? 'RESTRICT' : strtoupper($fkdef['onupdate']);
+                $fkdef['ondelete'] = empty($fkdef['ondelete']) ? 'RESTRICT' : strtoupper($fkdef['ondelete']);
+
+                $trigger_names = array(
+                    'insert'    => $fkname.'_insert_trg',
+                    'update'    => $fkname.'_update_trg',
+                    'pk_update' => $fkname.'_pk_update_trg',
+                    'pk_delete' => $fkname.'_pk_delete_trg',
+                );
+                
+                //create the [insert|update] triggers on the FK table
+                $table_fields = array_keys($fkdef['fields']);
+                $referenced_fields = array_keys($fkdef['references']['fields']);
+                $query = 'CREATE TRIGGER %s BEFORE %s ON '.$name
+                        .' FOR EACH ROW BEGIN'
+                        .' SELECT RAISE(ROLLBACK, \'%s on table "'.$name.'" violates FOREIGN KEY constraint "'.$fkname.'"\')'
+                        .' WHERE  (SELECT ';
+                $aliased_fields = array();
+                foreach ($referenced_fields as $field) {
+                    $aliased_fields[] = $fkdef['references']['table'] .'.'.$field .' AS '.$field;
+                }
+                $query .= implode(',', $aliased_fields)
+                       .' FROM '.$fkdef['references']['table']
+                       .' WHERE ';
+                $conditions = array();
+                for ($i=0; $i<count($table_fields); $i++) {
+                    $conditions[] = $referenced_fields[$i] .' = NEW.'.$table_fields[$i];
+                }
+                $query .= implode(' AND ', $conditions).') IS NULL; END;';
+                $result = $db->exec(sprintf($query, $trigger_names['insert'], 'INSERT', 'insert'));
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+
+                $result = $db->exec(sprintf($query, $trigger_names['update'], 'UPDATE', 'update'));
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                
+                //create the ON [UPDATE|DELETE] triggers on the primary table
+                $restrict_action = 'SELECT RAISE(ROLLBACK, \'%s on table "'.$name.'" violates FOREIGN KEY constraint "'.$fkname.'"\')'
+                                  .' WHERE  (SELECT ';
+                $aliased_fields = array();
+                foreach ($table_fields as $field) {
+                    $aliased_fields[] = $name .'.'.$field .' AS '.$field;
+                }
+                $restrict_action .= implode(',', $aliased_fields)
+                       .' FROM '.$name
+                       .' WHERE ';
+                $conditions  = array();
+                $new_values  = array();
+                $null_values = array();
+                for ($i=0; $i<count($table_fields); $i++) {
+                    $conditions[]  = $table_fields[$i] .' = OLD.'.$referenced_fields[$i];
+                    $new_values[]  = $table_fields[$i] .' = NEW.'.$referenced_fields[$i];
+                    $null_values[] = $table_fields[$i] .' = NULL';
+                }
+                $restrict_action .= implode(' AND ', $conditions).') IS NOT NULL';
+
+                $cascade_action_update = 'UPDATE '.$name.' SET '.implode(', ', $new_values) .' WHERE '.implode(' AND ', $conditions);
+                $cascade_action_delete = 'DELETE FROM '.$name.' WHERE '.implode(' AND ', $conditions);
+                $setnull_action        = 'UPDATE '.$name.' SET '.implode(', ', $null_values).' WHERE '.implode(' AND ', $conditions);
+
+                if ('SET DEFAULT' == $fkdef['onupdate'] || 'SET DEFAULT' == $fkdef['ondelete']) {
+                    $db->loadModule('Reverse', null, true);
+                    $default_values = array();
+                    foreach ($table_fields as $table_field) {
+                        $field_definition = $db->reverse->getTableFieldDefinition($name, $field);
+                        if (PEAR::isError($field_definition)) {
+                            return $field_definition;
+                        }
+                        $default_values[] = $table_field .' = '. $field_definition[0]['default'];
+                    }
+                    $setdefault_action = 'UPDATE '.$name.' SET '.implode(', ', $default_values).' WHERE '.implode(' AND ', $conditions);
+                }
+
+                $query = 'CREATE TRIGGER %s'
+                        .' %s ON '.$fkdef['references']['table']
+                        .' FOR EACH ROW BEGIN ';
+
+                if ('CASCADE' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query, $trigger_names['pk_update'], 'AFTER UPDATE',  'update') . $cascade_action_update. '; END;';
+                } elseif ('SET NULL' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . $setnull_action. '; END;';
+                } elseif ('SET DEFAULT' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . $setdefault_action. '; END;';
+                } elseif ('NO ACTION' == $fkdef['onupdate']) {
+                    $sql_update = sprintf($query.$restrict_action, $trigger_names['pk_update'], 'AFTER UPDATE', 'update') . '; END;';
+                } else {
+                    //'RESTRICT'
+                    $sql_update = sprintf($query.$restrict_action, $trigger_names['pk_update'], 'BEFORE UPDATE', 'update') . '; END;';
+                }
+                if ('CASCADE' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query, $trigger_names['pk_delete'], 'AFTER DELETE',  'delete') . $cascade_action_delete. '; END;';
+                } elseif ('SET NULL' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . $setnull_action. '; END;';
+                } elseif ('SET DEFAULT' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . $setdefault_action. '; END;';
+                } elseif ('NO ACTION' == $fkdef['ondelete']) {
+                    $sql_delete = sprintf($query.$restrict_action, $trigger_names['pk_delete'], 'AFTER DELETE', 'delete')  . '; END;';
+                } else {
+                    //'RESTRICT'
+                    $sql_delete = sprintf($query.$restrict_action, $trigger_names['pk_delete'], 'BEFORE DELETE', 'delete') . '; END;';
+                }
+
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                $result = $db->exec($sql_delete);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+                $result = $db->exec($sql_update);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ dropTable()
+
+    /**
+     * drop an existing table
+     *
+     * @param string $name name of the table that should be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropTable($name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+        
+        //delete the triggers associated to existing FK constraints
+        $constraints = $this->listTableConstraints($name);
+        if (!PEAR::isError($constraints) && !empty($constraints)) {
+            $db->loadModule('Reverse', null, true);
+            foreach ($constraints as $constraint) {
+                $definition = $db->reverse->getTableConstraintDefinition($name, $constraint);
+                if (!PEAR::isError($definition) && !empty($definition['foreign'])) {
+                    $result = $this->_dropFKTriggers($name, $constraint, $definition['references']['table']);
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+            }
+        }
+
+        $name = $db->quoteIdentifier($name, true);
+        return $db->exec("DROP TABLE $name");
+    }
+
+    // }}}
+    // {{{ alterTable()
+
+    /**
+     * alter an existing table
+     *
+     * @param string $name         name of the table that is intended to be changed.
+     * @param array $changes     associative array that contains the details of each type
+     *                             of change that is intended to be performed. The types of
+     *                             changes that are currently supported are defined as follows:
+     *
+     *                             name
+     *
+     *                                New name for the table.
+     *
+     *                            add
+     *
+     *                                Associative array with the names of fields to be added as
+     *                                 indexes of the array. The value of each entry of the array
+     *                                 should be set to another associative array with the properties
+     *                                 of the fields to be added. The properties of the fields should
+     *                                 be the same as defined by the MDB2 parser.
+     *
+     *
+     *                            remove
+     *
+     *                                Associative array with the names of fields to be removed as indexes
+     *                                 of the array. Currently the values assigned to each entry are ignored.
+     *                                 An empty array should be used for future compatibility.
+     *
+     *                            rename
+     *
+     *                                Associative array with the names of fields to be renamed as indexes
+     *                                 of the array. The value of each entry of the array should be set to
+     *                                 another associative array with the entry named name with the new
+     *                                 field name and the entry named Declaration that is expected to contain
+     *                                 the portion of the field declaration already in DBMS specific SQL code
+     *                                 as it is used in the CREATE TABLE statement.
+     *
+     *                            change
+     *
+     *                                Associative array with the names of the fields to be changed as indexes
+     *                                 of the array. Keep in mind that if it is intended to change either the
+     *                                 name of a field and any other properties, the change array entries
+     *                                 should have the new names of the fields as array indexes.
+     *
+     *                                The value of each entry of the array should be set to another associative
+     *                                 array with the properties of the fields to that are meant to be changed as
+     *                                 array entries. These entries should be assigned to the new values of the
+     *                                 respective properties. The properties of the fields should be the same
+     *                                 as defined by the MDB2 parser.
+     *
+     *                            Example
+     *                                array(
+     *                                    'name' => 'userlist',
+     *                                    'add' => array(
+     *                                        'quota' => array(
+     *                                            'type' => 'integer',
+     *                                            'unsigned' => 1
+     *                                        )
+     *                                    ),
+     *                                    'remove' => array(
+     *                                        'file_limit' => array(),
+     *                                        'time_limit' => array()
+     *                                    ),
+     *                                    'change' => array(
+     *                                        'name' => array(
+     *                                            'length' => '20',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 20,
+     *                                            ),
+     *                                        )
+     *                                    ),
+     *                                    'rename' => array(
+     *                                        'sex' => array(
+     *                                            'name' => 'gender',
+     *                                            'definition' => array(
+     *                                                'type' => 'text',
+     *                                                'length' => 1,
+     *                                                'default' => 'M',
+     *                                            ),
+     *                                        )
+     *                                    )
+     *                                )
+     *
+     * @param boolean $check     indicates whether the function should just check if the DBMS driver
+     *                             can perform the requested table alterations if the value is true or
+     *                             actually perform them otherwise.
+     * @access public
+     *
+      * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function alterTable($name, $changes, $check, $options = array())
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+            case 'remove':
+            case 'change':
+            case 'name':
+            case 'rename':
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        if ($check) {
+            return MDB2_OK;
+        }
+
+        $db->loadModule('Reverse', null, true);
+
+        // actually sqlite 2.x supports no ALTER TABLE at all .. so we emulate it
+        $fields = $db->manager->listTableFields($name);
+        if (PEAR::isError($fields)) {
+            return $fields;
+        }
+
+        $fields = array_flip($fields);
+        foreach ($fields as $field => $value) {
+            $definition = $db->reverse->getTableFieldDefinition($name, $field);
+            if (PEAR::isError($definition)) {
+                return $definition;
+            }
+            $fields[$field] = $definition[0];
+        }
+
+        $indexes = $db->manager->listTableIndexes($name);
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $indexes = array_flip($indexes);
+        foreach ($indexes as $index => $value) {
+            $definition = $db->reverse->getTableIndexDefinition($name, $index);
+            if (PEAR::isError($definition)) {
+                return $definition;
+            }
+            $indexes[$index] = $definition;
+        }
+
+        $constraints = $db->manager->listTableConstraints($name);
+        if (PEAR::isError($constraints)) {
+            return $constraints;
+        }
+
+        if (!array_key_exists('foreign_keys', $options)) {
+            $options['foreign_keys'] = array();
+        }
+        $constraints = array_flip($constraints);
+        foreach ($constraints as $constraint => $value) {
+            if (!empty($definition['primary'])) {
+                if (!array_key_exists('primary', $options)) {
+                    $options['primary'] = $definition['fields'];
+                    //remove from the $constraint array, it's already handled by createTable()
+                    unset($constraints[$constraint]);
+                }
+            } else {
+                $c_definition = $db->reverse->getTableConstraintDefinition($name, $constraint);
+                if (PEAR::isError($c_definition)) {
+                    return $c_definition;
+                }
+                if (!empty($c_definition['foreign'])) {
+                    if (!array_key_exists($constraint, $options['foreign_keys'])) {
+                        $options['foreign_keys'][$constraint] = $c_definition;
+                    }
+                    //remove from the $constraint array, it's already handled by createTable()
+                    unset($constraints[$constraint]);
+                } else {
+                    $constraints[$constraint] = $c_definition;
+                }
+            }
+        }
+
+        $name_new = $name;
+        $create_order = $select_fields = array_keys($fields);
+        foreach ($changes as $change_name => $change) {
+            switch ($change_name) {
+            case 'add':
+                foreach ($change as $field_name => $field) {
+                    $fields[$field_name] = $field;
+                    $create_order[] = $field_name;
+                }
+                break;
+            case 'remove':
+                foreach ($change as $field_name => $field) {
+                    unset($fields[$field_name]);
+                    $select_fields = array_diff($select_fields, array($field_name));
+                    $create_order = array_diff($create_order, array($field_name));
+                }
+                break;
+            case 'change':
+                foreach ($change as $field_name => $field) {
+                    $fields[$field_name] = $field['definition'];
+                }
+                break;
+            case 'name':
+                $name_new = $change;
+                break;
+            case 'rename':
+                foreach ($change as $field_name => $field) {
+                    unset($fields[$field_name]);
+                    $fields[$field['name']] = $field['definition'];
+                    $create_order[array_search($field_name, $create_order)] = $field['name'];
+                }
+                break;
+            default:
+                return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
+                    'change type "'.$change_name.'" not yet supported', __FUNCTION__);
+            }
+        }
+
+        $data = null;
+        if (!empty($select_fields)) {
+            $query = 'SELECT '.implode(', ', $select_fields).' FROM '.$db->quoteIdentifier($name, true);
+            $data = $db->queryAll($query, null, MDB2_FETCHMODE_ORDERED);
+        }
+
+        $result = $this->dropTable($name);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        $result = $this->createTable($name_new, $fields, $options);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+
+        foreach ($indexes as $index => $definition) {
+            $this->createIndex($name_new, $index, $definition);
+        }
+
+        foreach ($constraints as $constraint => $definition) {
+            $this->createConstraint($name_new, $constraint, $definition);
+        }
+
+        if (!empty($select_fields) && !empty($data)) {
+            $query = 'INSERT INTO '.$db->quoteIdentifier($name_new, true);
+            $query.= '('.implode(', ', array_slice(array_keys($fields), 0, count($select_fields))).')';
+            $query.=' VALUES (?'.str_repeat(', ?', (count($select_fields) - 1)).')';
+            $stmt =& $db->prepare($query, null, MDB2_PREPARE_MANIP);
+            if (PEAR::isError($stmt)) {
+                return $stmt;
+            }
+            foreach ($data as $row) {
+                $result = $stmt->execute($row);
+                if (PEAR::isError($result)) {
+                    return $result;
+                }
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ listDatabases()
+
+    /**
+     * list all databases
+     *
+     * @return mixed array of database names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listDatabases()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'list databases is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listUsers()
+
+    /**
+     * list all users
+     *
+     * @return mixed array of user names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listUsers()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+            'list databases is not supported', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ listViews()
+
+    /**
+     * list all views in the current database
+     *
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listViews()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='view' AND sql NOT NULL";
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableViews()
+
+    /**
+     * list the views in the database that reference a given table
+     *
+     * @param string table for which all referenced views should be found
+     * @return mixed array of view names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableViews($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name, sql FROM sqlite_master WHERE type='view' AND sql NOT NULL";
+        $views = $db->queryAll($query, array('text', 'text'), MDB2_FETCHMODE_ASSOC);
+        if (PEAR::isError($views)) {
+            return $views;
+        }
+        $result = array();
+        foreach ($views as $row) {
+            if (preg_match("/^create view .* \bfrom\b\s+\b{$table}\b /i", $row['sql'])) {
+                if (!empty($row['name'])) {
+                    $result[$row['name']] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ listTables()
+
+    /**
+     * list all tables in the current database
+     *
+     * @return mixed array of table names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTables()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='table' AND sql NOT NULL ORDER BY name";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if (!$this->_fixSequenceName($table_name, true)) {
+                $result[] = $table_name;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ listTableFields()
+
+    /**
+     * list all fields in a table in the current database
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of field names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableFields($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $result = $db->loadModule('Reverse', null, true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)='.$db->quote(strtolower($table), 'text');
+        } else {
+            $query.= 'name='.$db->quote($table, 'text');
+        }
+        $sql = $db->queryOne($query);
+        if (PEAR::isError($sql)) {
+            return $sql;
+        }
+        $columns = $db->reverse->_getTableColumns($sql);
+        $fields = array();
+        foreach ($columns as $column) {
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                if ($db->options['field_case'] == CASE_LOWER) {
+                    $column['name'] = strtolower($column['name']);
+                } else {
+                    $column['name'] = strtoupper($column['name']);
+                }
+            } else {
+                $column = array_change_key_case($column, $db->options['field_case']);
+            }
+            $fields[] = $column['name'];
+        }
+        return $fields;
+    }
+
+    // }}}
+    // {{{ listTableTriggers()
+
+    /**
+     * list all triggers in the database that reference a given table
+     *
+     * @param string table for which all referenced triggers should be found
+     * @return mixed array of trigger names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableTriggers($table = null)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='trigger' AND sql NOT NULL";
+        if (!is_null($table)) {
+            if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+                $query.= ' AND LOWER(tbl_name)='.$db->quote(strtolower($table), 'text');
+            } else {
+                $query.= ' AND tbl_name='.$db->quote($table, 'text');
+            }
+        }
+        $result = $db->queryCol($query);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ createIndex()
+
+    /**
+     * Get the stucture of a field into an array
+     *
+     * @param string    $table         name of the table on which the index is to be created
+     * @param string    $name         name of the index to be created
+     * @param array     $definition        associative array that defines properties of the index to be created.
+     *                                 Currently, only one property named FIELDS is supported. This property
+     *                                 is also an associative with the names of the index fields as array
+     *                                 indexes. Each entry of this array is set to another type of associative
+     *                                 array that specifies properties of the index that are specific to
+     *                                 each field.
+     *
+     *                                Currently, only the sorting property is supported. It should be used
+     *                                 to define the sorting direction of the index. It may be set to either
+     *                                 ascending or descending.
+     *
+     *                                Not all DBMS support index sorting direction configuration. The DBMS
+     *                                 drivers of those that do not support it ignore this property. Use the
+     *                                 function support() to determine whether the DBMS driver can manage indexes.
+
+     *                                 Example
+     *                                    array(
+     *                                        'fields' => array(
+     *                                            'user_name' => array(
+     *                                                'sorting' => 'ascending'
+     *                                            ),
+     *                                            'last_login' => array()
+     *                                        )
+     *                                    )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createIndex($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name  = $db->getIndexName($name);
+        $query = "CREATE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field_name => $field) {
+            $field_string = $field_name;
+            if (!empty($field['sorting'])) {
+                switch ($field['sorting']) {
+                case 'ascending':
+                    $field_string.= ' ASC';
+                    break;
+                case 'descending':
+                    $field_string.= ' DESC';
+                    break;
+                }
+            }
+            $fields[] = $field_string;
+        }
+        $query .= ' ('.implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropIndex()
+
+    /**
+     * drop existing index
+     *
+     * @param string    $table         name of table that should be used in method
+     * @param string    $name         name of the index to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropIndex($table, $name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $name = $db->getIndexName($name);
+        return $db->exec("DROP INDEX $name");
+    }
+
+    // }}}
+    // {{{ listTableIndexes()
+
+    /**
+     * list all indexes in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of index names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableIndexes($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(tbl_name)='.strtolower($table);
+        } else {
+            $query.= "tbl_name=$table";
+        }
+        $query.= " AND sql NOT NULL ORDER BY name";
+        $indexes = $db->queryCol($query, 'text');
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $sql) {
+            if (preg_match("/^create index ([^ ]+) on /i", $sql, $tmp)) {
+                $index = $this->_fixIndexName($tmp[1]);
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createConstraint()
+
+    /**
+     * create a constraint on a table
+     *
+     * @param string $table      name of the table on which the constraint is to be created
+     * @param string $name       name of the constraint to be created
+     * @param array  $definition associative array that defines properties of the constraint to be created.
+     *                           Currently, only one property named FIELDS is supported. This property
+     *                           is also an associative with the names of the constraint fields as array
+     *                           constraints. Each entry of this array is set to another type of associative
+     *                           array that specifies properties of the constraint that are specific to
+     *                           each field.
+     *
+     *                           Example
+     *                              array(
+     *                                  'fields' => array(
+     *                                      'user_name' => array(),
+     *                                      'last_login' => array()
+     *                                  )
+     *                              )
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createConstraint($table, $name, $definition)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        if (!empty($definition['primary'])) {
+            return $db->manager->alterTable($table, array(), false, array('primary' => $definition['fields']));
+        }
+        
+        if (!empty($definition['foreign'])) {
+            return $db->manager->alterTable($table, array(), false, array('foreign_keys' => array($name => $definition)));
+        }
+
+        $table = $db->quoteIdentifier($table, true);
+        $name  = $db->getIndexName($name);
+        $query = "CREATE UNIQUE INDEX $name ON $table";
+        $fields = array();
+        foreach ($definition['fields'] as $field_name => $field) {
+            $field_string = $field_name;
+            if (!empty($field['sorting'])) {
+                switch ($field['sorting']) {
+                case 'ascending':
+                    $field_string.= ' ASC';
+                    break;
+                case 'descending':
+                    $field_string.= ' DESC';
+                    break;
+                }
+            }
+            $fields[] = $field_string;
+        }
+        $query .= ' ('.implode(', ', $fields) . ')';
+        return $db->exec($query);
+    }
+
+    // }}}
+    // {{{ dropConstraint()
+
+    /**
+     * drop existing constraint
+     *
+     * @param string    $table        name of table that should be used in method
+     * @param string    $name         name of the constraint to be dropped
+     * @param string    $primary      hint if the constraint is primary
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropConstraint($table, $name, $primary = false)
+    {
+        if ($primary || $name == 'PRIMARY') {
+            return $this->alterTable($table, array(), false, array('primary' => null));
+        }
+
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        //is it a FK constraint? If so, also delete the associated triggers
+        $db->loadModule('Reverse', null, true);
+        $definition = $db->reverse->getTableConstraintDefinition($table, $name);
+        if (!PEAR::isError($definition) && !empty($definition['foreign'])) {
+            //first drop the FK enforcing triggers
+            $result = $this->_dropFKTriggers($table, $name, $definition['references']['table']);
+            if (PEAR::isError($result)) {
+                return $result;
+            }
+            //then drop the constraint itself
+            return $this->alterTable($table, array(), false, array('foreign_keys' => array($name => null)));
+        }
+
+        $name = $db->getIndexName($name);
+        return $db->exec("DROP INDEX $name");
+    }
+
+    // }}}
+    // {{{ _dropFKTriggers()
+    
+    /**
+     * Drop the triggers created to enforce the FOREIGN KEY constraint on the table
+     *
+     * @param string $table  table name
+     * @param string $fkname FOREIGN KEY constraint name
+     * @param string $referenced_table  referenced table name
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function _dropFKTriggers($table, $fkname, $referenced_table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $triggers  = $this->listTableTriggers($table);
+        $triggers2 = $this->listTableTriggers($referenced_table);
+        if (!PEAR::isError($triggers2) && !PEAR::isError($triggers)) {
+            $triggers = array_merge($triggers, $triggers2);
+            $pattern = '/^'.$fkname.'(_pk)?_(insert|update|delete)_trg$/i';
+            foreach ($triggers as $trigger) {
+                if (preg_match($pattern, $trigger)) {
+                    $result = $db->exec('DROP TRIGGER '.$trigger);
+                    if (PEAR::isError($result)) {
+                        return $result;
+                    }
+                }
+            }
+        }
+        return MDB2_OK;
+    }
+
+    // }]]
+    // {{{ listTableConstraints()
+
+    /**
+     * list all constraints in a table
+     *
+     * @param string $table name of table that should be used in method
+     * @return mixed array of constraint names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listTableConstraints($table)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $table = $db->quote($table, 'text');
+        $query = "SELECT sql FROM sqlite_master WHERE type='index' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(tbl_name)='.strtolower($table);
+        } else {
+            $query.= "tbl_name=$table";
+        }
+        $query.= " AND sql NOT NULL ORDER BY name";
+        $indexes = $db->queryCol($query, 'text');
+        if (PEAR::isError($indexes)) {
+            return $indexes;
+        }
+
+        $result = array();
+        foreach ($indexes as $sql) {
+            if (preg_match("/^create unique index ([^ ]+) on /i", $sql, $tmp)) {
+                $index = $this->_fixIndexName($tmp[1]);
+                if (!empty($index)) {
+                    $result[$index] = true;
+                }
+            }
+        }
+        
+        // also search in table definition for PRIMARY KEYs...
+        $query = "SELECT sql FROM sqlite_master WHERE type='table' AND ";
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $query.= 'LOWER(name)='.strtolower($table);
+        } else {
+            $query.= "name=$table";
+        }
+        $query.= " AND sql NOT NULL ORDER BY name";
+        $table_def = $db->queryOne($query, 'text');
+        if (PEAR::isError($table_def)) {
+            return $table_def;
+        }
+        if (preg_match("/\bPRIMARY\s+KEY\b\s*\(([^)]+)/i", $table_def, $tmp)) {
+            $result['primary'] = true;
+        }
+
+        // ...and for FOREIGN KEYs
+        if (preg_match_all("/\bCONSTRAINT\b\s+([^\s]+)\s+\bFOREIGN\s+KEY/imsx", $table_def, $tmp)) {
+            foreach ($tmp[1] as $fk) {
+                $result[$fk] = true;
+            }
+        }
+
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_change_key_case($result, $db->options['field_case']);
+        }
+        return array_keys($result);
+    }
+
+    // }}}
+    // {{{ createSequence()
+
+    /**
+     * create sequence
+     *
+     * @param string    $seq_name     name of the sequence to be created
+     * @param string    $start         start value of the sequence; default is 1
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function createSequence($seq_name, $start = 1)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
+        $query = "CREATE TABLE $sequence_name ($seqcol_name INTEGER PRIMARY KEY DEFAULT 0 NOT NULL)";
+        $res = $db->exec($query);
+        if (PEAR::isError($res)) {
+            return $res;
+        }
+        if ($start == 1) {
+            return MDB2_OK;
+        }
+        $res = $db->exec("INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')');
+        if (!PEAR::isError($res)) {
+            return MDB2_OK;
+        }
+        // Handle error
+        $result = $db->exec("DROP TABLE $sequence_name");
+        if (PEAR::isError($result)) {
+            return $db->raiseError($result, null, null,
+                'could not drop inconsistent sequence table', __FUNCTION__);
+        }
+        return $db->raiseError($res, null, null,
+            'could not create sequence table', __FUNCTION__);
+    }
+
+    // }}}
+    // {{{ dropSequence()
+
+    /**
+     * drop existing sequence
+     *
+     * @param string    $seq_name     name of the sequence to be dropped
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function dropSequence($seq_name)
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
+        return $db->exec("DROP TABLE $sequence_name");
+    }
+
+    // }}}
+    // {{{ listSequences()
+
+    /**
+     * list all sequences in the current database
+     *
+     * @return mixed array of sequence names on success, a MDB2 error on failure
+     * @access public
+     */
+    function listSequences()
+    {
+        $db =& $this->getDBInstance();
+        if (PEAR::isError($db)) {
+            return $db;
+        }
+
+        $query = "SELECT name FROM sqlite_master WHERE type='table' AND sql NOT NULL ORDER BY name";
+        $table_names = $db->queryCol($query);
+        if (PEAR::isError($table_names)) {
+            return $table_names;
+        }
+        $result = array();
+        foreach ($table_names as $table_name) {
+            if ($sqn = $this->_fixSequenceName($table_name, true)) {
+                $result[] = $sqn;
+            }
+        }
+        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
+        }
+        return $result;
+    }
+
+    // }}}
+}
+?>
+\ No newline at end of file
author	till <till@php.net>	2008-02-03 12:58:34 +0000
committer	till <till@php.net>	2008-02-03 12:58:34 +0000
commit	95ebbc985a0e64a364e880de89dbc1ae7952d91e (patch)
tree	78474efc88790b6d88e4976b51c7bebb5d017a37 /program/lib/MDB2/Driver/Manager
parent	9f5bd376b47f41924ede3d8136302d0f7b81c89f (diff)