Merge branch 'pdo'

Conflicts:
	CHANGELOG

1 files changed, 0 insertions, 1383 deletions

diff --git a/program/lib/MDB2/Driver/Manager/sqlsrv.php b/program/lib/MDB2/Driver/Manager/sqlsrv.php
deleted file mode 100644
index 256e000af..000000000
--- a/program/lib/MDB2/Driver/Manager/sqlsrv.php
+++ /dev/null
@@ -1,1383 +0,0 @@
-<?php
-// +----------------------------------------------------------------------+
-// | PHP versions 4 and 5                                                 |
-// +----------------------------------------------------------------------+
-// | Copyright (c) 1998-2008 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>                      |
-// +----------------------------------------------------------------------+
-
-require_once 'MDB2/Driver/Manager/Common.php';
-
-// {{{ class MDB2_Driver_Manager_sqlsrv
-
-/**
- * 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_sqlsrv 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);
-    }
-
-    // }}}
-    // {{{ alterDatabase()
-
-    /**
-     * alter an existing database
-     *
-     * @param string $name    name of the database that is intended to be changed
-     * @param array  $options array with name, collation info
-     *
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     * @access public
-     */
-    function alterDatabase($name, $options = array())
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $query = '';
-        if (!empty($options['name'])) {
-            $query .= ' MODIFY NAME = ' .$db->quoteIdentifier($options['name'], true);
-        }
-        if (!empty($options['collation'])) {
-            $query .= ' COLLATE ' . $options['collation'];
-        }
-        if (!empty($query)) {
-            $query = 'ALTER DATABASE '. $db->quoteIdentifier($name, true) . $query;
-            return $db->standaloneQuery($query, null, true);
-        }
-        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);
-        return $db->standaloneQuery("DROP DATABASE $name", null, true);
-    }
-
-    // }}}
-    // {{{ 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 $db->exec("IF EXISTS (SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='$name') DROP TABLE $name");
-    }
-
-    // }}}	
-    // {{{ _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;//would make subsequent calls fail because it would go out ot scope and be destroyed already
-        }*/
-        return parent::createTable($name, $fields, $options);
-    }
-
-    // }}}
-    // {{{ truncateTable()
-
-    /**
-     * Truncate an existing table (if the TRUNCATE TABLE syntax is not supported,
-     * it falls back to a DELETE FROM TABLE query)
-     *
-     * @param string $name name of the table that should be truncated
-     * @return mixed MDB2_OK on success, a MDB2 error on failure
-     * @access public
-     */
-    function truncateTable($name)
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $name = $db->quoteIdentifier($name, true);
-        return $db->exec("TRUNCATE 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  $options an array with driver-specific options:
-     *               - timeout [int] (in seconds) [mssql-only]
-     *               - analyze [boolean] [pgsql and mysql]
-     *               - full [boolean] [pgsql-only]
-     *               - freeze [boolean] [pgsql-only]
-     *
-     * NB: you have to run the NSControl Create utility to enable VACUUM
-     *
-     * @return mixed MDB2_OK success, a MDB2 error on failure
-     * @access public
-     */
-    function vacuum($table = null, $options = array())
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-        $timeout = isset($options['timeout']) ? (int)$options['timeout'] : 300;
-
-        $query = 'NSControl Create';
-        $result = $db->exec($query);
-        if (PEAR::isError($result)) {
-            return $result;
-        }
-
-        return $db->exec('EXEC NSVacuum '.$timeout);
-    }
-
-    // }}}
-    // {{{ 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;
-        }
-        $name_quoted = $db->quoteIdentifier($name, true);
-
-        foreach ($changes as $change_name => $change) {
-            switch ($change_name) {
-            case 'remove':
-            case 'rename':
-            case 'add':
-            case 'change':
-            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;
-        }
-
-        $idxname_format = $db->getOption('idxname_format');
-        $db->setOption('idxname_format', '%s');
-
-        if (!empty($changes['remove']) && is_array($changes['remove'])) {
-            $result = $this->_dropConflictingIndices($name, array_keys($changes['remove']));
-            if (PEAR::isError($result)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $result;
-            }
-            $result = $this->_dropConflictingConstraints($name, array_keys($changes['remove']));
-            if (PEAR::isError($result)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $result;
-            }
-
-            $query = '';
-            foreach ($changes['remove'] as $field_name => $field) {
-                if ($query) {
-                    $query.= ', ';
-                }
-                $field_name = $db->quoteIdentifier($field_name, true);
-                $query.= 'COLUMN ' . $field_name;
-            }
-
-            $result = $db->exec("ALTER TABLE $name_quoted DROP $query");
-            if (PEAR::isError($result)) {
-                $db->setOption('idxname_format', $idxname_format);
-                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 = $db->exec("sp_rename '$name_quoted.$field_name', '".$field['name']."', 'COLUMN'");
-                if (PEAR::isError($result)) {
-                    $db->setOption('idxname_format', $idxname_format);
-                    return $result;
-                }
-            }
-        }
-
-        if (!empty($changes['add']) && is_array($changes['add'])) {
-            $query = '';
-            foreach ($changes['add'] as $field_name => $field) {
-                if ($query) {
-                    $query.= ', ';
-                } else {
-                    $query.= 'ADD ';
-                }
-                $query.= $db->getDeclaration($field['type'], $field_name, $field);
-            }
-
-            $result = $db->exec("ALTER TABLE $name_quoted $query");
-            if (PEAR::isError($result)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $result;
-            }
-        }
-
-        $dropped_indices     = array();
-        $dropped_constraints = array();
-
-        if (!empty($changes['change']) && is_array($changes['change'])) {
-            $dropped = $this->_dropConflictingIndices($name, array_keys($changes['change']));
-            if (PEAR::isError($dropped)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $dropped;
-            }
-            $dropped_indices = array_merge($dropped_indices, $dropped);
-            $dropped = $this->_dropConflictingConstraints($name, array_keys($changes['change']));
-            if (PEAR::isError($dropped)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $dropped;
-            }
-            $dropped_constraints = array_merge($dropped_constraints, $dropped);
-
-            foreach ($changes['change'] as $field_name => $field) {
-                //MSSQL doesn't allow multiple ALTER COLUMNs in one query
-                $query = 'ALTER COLUMN ';
-
-                //MSSQL doesn't allow changing the DEFAULT value of a field in altering mode
-                if (array_key_exists('default', $field['definition'])) {
-                    unset($field['definition']['default']);
-                }
-
-                $query .= $db->getDeclaration($field['definition']['type'], $field_name, $field['definition']);
-                $result = $db->exec("ALTER TABLE $name_quoted $query");
-                if (PEAR::isError($result)) {
-                    $db->setOption('idxname_format', $idxname_format);
-                    return $result;
-                }
-            }
-        }
-
-        // restore the dropped conflicting indices and constraints
-        foreach ($dropped_indices as $index_name => $index) {
-            $result = $this->createIndex($name, $index_name, $index);
-            if (PEAR::isError($result)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $result;
-            }
-        }
-        foreach ($dropped_constraints as $constraint_name => $constraint) {
-            $result = $this->createConstraint($name, $constraint_name, $constraint);
-            if (PEAR::isError($result)) {
-                $db->setOption('idxname_format', $idxname_format);
-                return $result;
-            }
-        }
-
-        $db->setOption('idxname_format', $idxname_format);
-
-        if (!empty($changes['name'])) {
-            $new_name = $db->quoteIdentifier($changes['name'], true);
-            $result = $db->exec("sp_rename '$name_quoted', '$new_name'");
-            if (PEAR::isError($result)) {
-                return $result;
-            }
-        }
-
-        return MDB2_OK;
-    }
-
-    // }}}
-    // {{{ _dropConflictingIndices()
-
-    /**
-     * Drop the indices that prevent a successful ALTER TABLE action
-     *
-     * @param string $table  table name
-     * @param array  $fields array of names of the fields affected by the change
-     *
-     * @return array dropped indices definitions
-     */
-    function _dropConflictingIndices($table, $fields)
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $dropped = array();
-        $index_names = $this->listTableIndexes($table);
-        if (PEAR::isError($index_names)) {
-            return $index_names;
-        }
-        $db->loadModule('Reverse');
-        $indexes = array();
-        foreach ($index_names as $index_name) {
-        	$idx_def = $db->reverse->getTableIndexDefinition($table, $index_name);
-            if (!PEAR::isError($idx_def)) {
-                $indexes[$index_name] = $idx_def;
-            }
-        }
-        foreach ($fields as $field_name) {
-            foreach ($indexes as $index_name => $index) {
-                if (!isset($dropped[$index_name]) && array_key_exists($field_name, $index['fields'])) {
-                    $dropped[$index_name] = $index;
-                    $result = $this->dropIndex($table, $index_name);
-                    if (PEAR::isError($result)) {
-                        return $result;
-                    }
-                }
-            }
-        }
-
-        return $dropped;
-    }
-
-    // }}}
-    // {{{ _dropConflictingConstraints()
-
-    /**
-     * Drop the constraints that prevent a successful ALTER TABLE action
-     *
-     * @param string $table  table name
-     * @param array  $fields array of names of the fields affected by the change
-     *
-     * @return array dropped constraints definitions
-     */
-    function _dropConflictingConstraints($table, $fields)
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $dropped = array();
-        $constraint_names = $this->listTableConstraints($table);
-        if (PEAR::isError($constraint_names)) {
-            return $constraint_names;
-        }
-        $db->loadModule('Reverse');
-        $constraints = array();
-        foreach ($constraint_names as $constraint_name) {
-        	$cons_def = $db->reverse->getTableConstraintDefinition($table, $constraint_name);
-            if (!PEAR::isError($cons_def)) {
-                $constraints[$constraint_name] = $cons_def;
-            }
-        }
-        foreach ($fields as $field_name) {
-            foreach ($constraints as $constraint_name => $constraint) {
-                if (!isset($dropped[$constraint_name]) && array_key_exists($field_name, $constraint['fields'])) {
-                    $dropped[$constraint_name] = $constraint;
-                    $result = $this->dropConstraint($table, $constraint_name);
-                    if (PEAR::isError($result)) {
-                        return $result;
-                    }
-                }
-            }
-            // also drop implicit DEFAULT constraints
-            $default = $this->_getTableFieldDefaultConstraint($table, $field_name);
-            if (!PEAR::isError($default) && !empty($default)) {
-                $result = $this->dropConstraint($table, $default);
-                if (PEAR::isError($result)) {
-                    return $result;
-                }
-            }
-        }
-
-        return $dropped;
-    }
-
-    // }}}
-    // {{{ _getTableFieldDefaultConstraint()
-
-    /**
-     * Get the default constraint for a table field
-     *
-     * @param string $table name of table that should be used in method
-     * @param string $field name of field that should be used in method
-     *
-     * @return mixed name of default constraint on success, a MDB2 error on failure
-     * @access private
-     */
-    function _getTableFieldDefaultConstraint($table, $field)
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $table = $db->quoteIdentifier($table, true);
-        $field = $db->quote($field, 'text');
-        $query = "SELECT OBJECT_NAME(syscolumns.cdefault)
-                    FROM syscolumns
-                   WHERE syscolumns.id = object_id('$table')
-                     AND syscolumns.name = $field
-                     AND syscolumns.cdefault <> 0";
-        return $db->queryOne($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 (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;
-        }
-        $query = "SELECT c.constraint_name
-                    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
-                   WHERE c.constraint_catalog = DB_NAME()
-                     AND c.table_name = '$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);
-    }
-
-    // }}}
-    // {{{
-
-    /**
-     * 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 $options An associative array of table options
-     *                          Supported options are:
-     *                          'primary'   An array of column names in the array keys
-     *                                      that form the primary key of the table
-     *                          'temporary' If true, creates the table as a temporary table
-     * @return mixed string  The SQL query on success, or MDB2 error on failure
-     * @see createTable()
-     */
-    function _getCreateTableQuery($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 $query_fields;
-        }
-        /*Removed since you can't get the PK name from Schema here, will result in a redefinition of PK index error
-		if (!empty($options['primary'])) {
-            $query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
-        }*/
-
-        $name = $db->quoteIdentifier($name, true);
-        $result = 'CREATE ';
-        if (!empty($options['temporary']) && $options['temporary']) {
-            $result .= $this->_getTemporaryTableQuery() . ' ';
-        }
-        $result .= "TABLE $name ($query_fields)";
-        return $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;
-    }
-
-    // }}}
-    /**
-     * New OPENX method to check table name according to specifications:
-     *  http://msdn.microsoft.com/en-us/library/aa258255(SQL.80).aspx
-     *
-     *  Table names must conform to the rules for identifiers. The combination of owner.table_name 
-     *  must be unique within the database. table_name can contain a maximum of 128 characters, 
-     *  except for local temporary table names (names prefixed with a single number sign (#)) that 
-     *  cannot exceed 116 characters.
-     *
-     * @param string $name table name to check
-     * @return true if name is correct and PEAR error on failure
-     */
-    function validateTableName($name)
-    {
-        // Table name maximum length is 128
-        if (strlen($name) > 128) {
-            return PEAR::raiseError(
-               'SQL Server table names are limited to 128 characters in length');
-        }
-        return true;
-    }
-
-    /**
-     * New OpenX method
-     *
-     * @param string $table
-     * @return array
-     */
-    function getTableStatus($table)
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-
-        $query      = "exec sp_spaceused '{$table}'";
-        $result     = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
-        if (PEAR::isError($result))
-        {
-            return array();
-        }
-		$result[0]['data_length'] = (isset($result[0]['data'])) ? $result[0]['data'] : 0;
-		$result[0]['data_free'] = (isset($result[0]['unused'])) ? $result[0]['unused'] : 0;
-		//data_length,rows,auto_increment,data_free
-        $query      = "SELECT IDENT_CURRENT ('{$table}') + IDENT_INCR ('{$table}') AS auto_increment";
-        $resultIdentity     = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
-		$result[0]['auto_increment'] = (isset($resultIdentity[0]['auto_increment'])) ? $resultIdentity[0]['auto_increment'] : 0;
-        return $result;
-    }
-
-    function checkTable($tableName)
-    {
-        $db = $this->getDBInstance();
-        if (PEAR::isError($db)) {
-            return $db;
-        }
-        $query  = 'CHECK TABLE '.$tableName;
-        $result = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
-        if (PEAR::isError($result))
-        {
-            return array('msg_text' => $result->getUserInfo());
-        }
-        return $result;
-    }
-
-    /**
-     * New OPENX method to check database name according to specifications:
-     *  Mysql specification: http://dev.mysql.com/doc/refman/4.1/en/identifiers.html
-     *  Mysql specification: http://dev.mysql.com/doc/refman/5.0/en/identifiers.html
-     *  For 4.0, 4.1, 5.0 seem to be the same
-     *
-     * @param string $name database name to check
-     * @return true in name is correct and PEAR error on failure
-     */
-    function validateDatabaseName($name)
-    {
-        return $this->_validateEntityName($name, 'Database');
-    }
-
-    /**
-     * New OPENX method to check entity name according to specifications:
-     *  Mysql specification: http://dev.mysql.com/doc/refman/4.1/en/identifiers.html
-     *  Mysql specification: http://dev.mysql.com/doc/refman/5.0/en/identifiers.html
-     *  For 4.0, 4.1, 5.0 seem to be the same
-     *
-     *  There are some restrictions on the characters that may appear in identifiers:
-     *  - No identifier can contain ASCII 0 (0x00) or a byte with a value of 255.
-     *  - Before MySQL 4.1, identifier quote characters should not be used in identifiers.
-     *  - Database, table, and column names should not end with space characters.
-     *  - Database and table names cannot contain “/”, “\”, “.”, or characters that are not allowed in filenames.
-     *
-     *  Table/Database name maximum length:
-     *  - 64
-     *
-     * @param string $name table name to check
-     * @return true if name is correct and PEAR error on failure
-     *      *
-     * @param unknown_type $name
-     * @param unknown_type $entityType
-     * @return unknown
-     */
-    function _validateEntityName($name, $entityType)
-    {
-        // Table name maximum length is 64
-        if (strlen($name) > 64) {
-            return PEAR::raiseError(
-               $entityType.' names are limited to 64 characters in length');
-        }
-
-        // Database, table, and column names should not end with space characters.
-        // Extended for leading and ending spaces
-        if ($name != trim($name)) {
-            return PEAR::raiseError(
-                $entityType.' names should not start or end with space characters');
-        }
-
-        // No identifier can contain ASCII 0 (0x00) or a byte with a value of 255.
-        if (preg_match( '/([\x00\xff])/', $name)) {
-            return PEAR::raiseError(
-               $entityType.' names cannot contain ASCII 0 (0x00) or a byte with a value of 255');
-        }
-
-        //Before MySQL 4.1, identifier quote characters should not be used in identifiers.
-        //we actually extend that and disallow quoting at all
-        if (preg_match( '/(\\\\|\/|\.|\"|\\\'| |\\(|\\)|\\:|\\;)/', $name)) {
-            return PEAR::raiseError(
-                $entityType.' names cannot contain "/", "\\", ".", or characters that are not allowed in filenames');
-        }
-
-        return true;
-    }
-
-    // {{{ 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;
-        }
-        $table = $db->quoteIdentifier($table, true);
-        $name = $db->quoteIdentifier($db->getIndexName($name), true);
-        if (!empty($definition['primary']) && empty($definition['unique'])) {
-	        $query = "ALTER TABLE $table ADD CONSTRAINT $name";
-	        if (!empty($definition['primary'])) {
-	            $query.= ' PRIMARY KEY';
-	        } elseif (!empty($definition['unique'])) {
-	            $query.= ' UNIQUE';
-	        }
-        } elseif (!empty($definition['unique'])) {
-	        $query = "CREATE UNIQUE NONCLUSTERED INDEX $name ON $table";
-        }
-        $fields = array();
-        foreach (array_keys($definition['fields']) as $field) {
-            $fields[] = $db->quoteIdentifier($field, true);
-        }
-        $query .= ' ('. implode(', ', $fields) . ')';
-		//deals with NULL values and UNIQUE indexes, this solution is only available in SQL Server 2008
-		//https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=299229
-		if (!empty($definition['unique']) && empty($definition['primary'])) {
-			for($i=0;$i<count($fields);$i++) $fields[$i] .= ' is NOT NULL';
-			$query .= ' WHERE '. implode(' AND ', $fields);
-		}
-        return $db->exec($query);
-    }
-
-    // }}}
-	
-}
-
-// }}}
-?>
\ No newline at end of file