Add PDO to requirements, remove MDB2 package

1 files changed, 0 insertions, 1362 deletions

diff --git a/program/lib/MDB2/Driver/Manager/sqlite.php b/program/lib/MDB2/Driver/Manager/sqlite.php
deleted file mode 100644
index aa01caf32..000000000
--- a/program/lib/MDB2/Driver/Manager/sqlite.php
+++ /dev/null
@@ -1,1362 +0,0 @@
-<?php
-// +----------------------------------------------------------------------+
-// | PHP versions 4 and 5                                                 |
-// +----------------------------------------------------------------------+
-// | Copyright (c) 1998-2008 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 295587 2010-02-28 17:16:38Z quipo $
-//
-
-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 default if not set
-                $fkdef['onupdate'] = empty($fkdef['onupdate']) ? $db->options['default_fk_action_onupdate'] : strtoupper($fkdef['onupdate']);
-                $fkdef['ondelete'] = empty($fkdef['ondelete']) ? $db->options['default_fk_action_ondelete'] : strtoupper($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';
-                }
-                $conditions2 = array();
-                for ($i=0; $i<count($referenced_fields); $i++) {
-                    $conditions2[]  = 'NEW.'.$referenced_fields[$i] .' <> OLD.'.$referenced_fields[$i];
-                }
-                $restrict_action .= implode(' AND ', $conditions).') IS NOT NULL'
-                                 .' AND (' .implode(' OR ', $conditions2) .')';
-
-                $cascade_action_update = 'UPDATE '.$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;';
-                } elseif ('RESTRICT' == $fkdef['onupdate']) {
-                    $sql_update = sprintf($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;';
-                } elseif ('RESTRICT' == $fkdef['ondelete']) {
-                    $sql_delete = sprintf($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");
-    }
-
-    // }}}
-    // {{{ vacuum()
-
-    /**
-     * Optimize (vacuum) all the tables in the db (or only the specified table)
-     * and optionally run ANALYZE.
-     *
-     * @param string $table table name (all the tables if empty)
-     * @param array  $options an array with driver-specific options:
-     *               - timeout [int] (in seconds) [mssql-only]
-     *               - analyze [boolean] [pgsql and mysql]
-     *               - full [boolean] [pgsql-only]
-     *               - freeze [boolean] [pgsql-only]
-     *
-     * @return mixed MDB2_OK success, a MDB2 error on failure
-     * @access public
-     */
-    function vacuum($table = null, $options = array())
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $query = 'VACUUM';
-        if (!empty($table)) {
-            $query .= ' '.$db->quoteIdentifier($table, true);
-        }
-        return $db->exec($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, $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 (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/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