1039 lines
36 KiB
PHP
1039 lines
36 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Authors: Lukas Smith <smith@pooteeweet.org> |
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// | Lorenzo Alberton <l.alberton@quipo.it> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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/**
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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* @author Lorenzo Alberton <l.alberton@quipo.it>
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*/
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/**
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* Base class for the management modules that is extended by each MDB2 driver
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*
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* To load this module in the MDB2 object:
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* $mdb->loadModule('Manager');
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Manager_Common extends MDB2_Module_Common
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{
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// {{{ splitTableSchema()
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/**
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* Split the "[owner|schema].table" notation into an array
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*
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* @param string $table [schema and] table name
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*
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* @return array array(schema, table)
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* @access private
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*/
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function splitTableSchema($table)
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{
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$ret = array();
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if (strpos($table, '.') !== false) {
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return explode('.', $table);
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}
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return array(null, $table);
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}
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// }}}
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// {{{ getFieldDeclarationList()
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/**
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* Get declaration of a number of field in bulk
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*
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* @param array $fields a multidimensional associative array.
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* The first dimension determines the field name, while the second
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* dimension is keyed with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* default
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* Boolean value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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*
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* @return mixed string on success, a MDB2 error on failure
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* @access public
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*/
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function getFieldDeclarationList($fields)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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if (!is_array($fields) || empty($fields)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
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'missing any fields', __FUNCTION__);
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}
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foreach ($fields as $field_name => $field) {
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$query = $db->getDeclaration($field['type'], $field_name, $field);
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if (MDB2::isError($query)) {
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return $query;
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}
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$query_fields[] = $query;
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}
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return implode(', ', $query_fields);
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}
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// }}}
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// {{{ _fixSequenceName()
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/**
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* Removes any formatting in an sequence name using the 'seqname_format' option
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*
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* @param string $sqn string that containts name of a potential sequence
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* @param bool $check if only formatted sequences should be returned
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* @return string name of the sequence with possible formatting removed
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* @access protected
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*/
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function _fixSequenceName($sqn, $check = false)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$seq_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['seqname_format']).'$/i';
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$seq_name = preg_replace($seq_pattern, '\\1', $sqn);
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if ($seq_name && !strcasecmp($sqn, $db->getSequenceName($seq_name))) {
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return $seq_name;
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}
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if ($check) {
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return false;
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}
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return $sqn;
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}
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// }}}
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// {{{ _fixIndexName()
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/**
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* Removes any formatting in an index name using the 'idxname_format' option
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*
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* @param string $idx string that containts name of anl index
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* @return string name of the index with eventual formatting removed
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* @access protected
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*/
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function _fixIndexName($idx)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$idx_pattern = '/^'.preg_replace('/%s/', '([a-z0-9_]+)', $db->options['idxname_format']).'$/i';
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$idx_name = preg_replace($idx_pattern, '\\1', $idx);
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if ($idx_name && !strcasecmp($idx, $db->getIndexName($idx_name))) {
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return $idx_name;
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}
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return $idx;
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}
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// }}}
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// {{{ createDatabase()
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/**
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* create a new database
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*
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* @param string $name name of the database that should be created
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* @param array $options array with charset, collation info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($database, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ alterDatabase()
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/**
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* alter an existing database
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*
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* @param string $name name of the database that should be created
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* @param array $options array with charset, collation info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function alterDatabase($database, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ dropDatabase()
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/**
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* drop an existing database
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*
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* @param string $name name of the database that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropDatabase($database)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ _getCreateTableQuery()
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/**
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* Create a basic SQL query for a new table creation
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*
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* @param string $name Name of the database that should be created
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* @param array $fields Associative array that contains the definition of each field of the new table
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* @param array $options An associative array of table options
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*
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* @return mixed string (the SQL query) on success, a MDB2 error on failure
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* @see createTable()
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*/
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function _getCreateTableQuery($name, $fields, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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if (!$name) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'no valid table name specified', __FUNCTION__);
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}
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if (empty($fields)) {
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return $db->raiseError(MDB2_ERROR_CANNOT_CREATE, null, null,
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'no fields specified for table "'.$name.'"', __FUNCTION__);
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}
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$query_fields = $this->getFieldDeclarationList($fields);
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if (MDB2::isError($query_fields)) {
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return $query_fields;
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}
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if (!empty($options['primary'])) {
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$query_fields.= ', PRIMARY KEY ('.implode(', ', array_keys($options['primary'])).')';
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}
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$name = $db->quoteIdentifier($name, true);
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$result = 'CREATE ';
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if (!empty($options['temporary'])) {
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$result .= $this->_getTemporaryTableQuery();
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}
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$result .= " TABLE $name ($query_fields)";
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return $result;
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}
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// }}}
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// {{{ _getTemporaryTableQuery()
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/**
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* A method to return the required SQL string that fits between CREATE ... TABLE
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* to create the table as a temporary table.
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*
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* Should be overridden in driver classes to return the correct string for the
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* specific database type.
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*
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* The default is to return the string "TEMPORARY" - this will result in a
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* SQL error for any database that does not support temporary tables, or that
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* requires a different SQL command from "CREATE TEMPORARY TABLE".
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*
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* @return string The string required to be placed between "CREATE" and "TABLE"
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* to generate a temporary table, if possible.
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*/
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function _getTemporaryTableQuery()
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{
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return 'TEMPORARY';
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}
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// }}}
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// {{{ createTable()
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/**
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* create a new table
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*
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* @param string $name Name of the database that should be created
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* @param array $fields Associative array that contains the definition of each field of the new table
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* The indexes of the array entries are the names of the fields of the table an
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* the array entry values are associative arrays like those that are meant to be
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* passed with the field definitions to get[Type]Declaration() functions.
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* array(
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* 'id' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* 'notnull' => 1
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* 'default' => 0
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* ),
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* 'name' => array(
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* 'type' => 'text',
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* 'length' => 12
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* ),
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* 'password' => array(
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* 'type' => 'text',
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* 'length' => 12
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* )
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* );
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* @param array $options An associative array of table options:
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* array(
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* 'comment' => 'Foo',
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* 'temporary' => true|false,
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* );
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createTable($name, $fields, $options = array())
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{
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$query = $this->_getCreateTableQuery($name, $fields, $options);
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if (MDB2::isError($query)) {
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return $query;
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}
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$result = $db->exec($query);
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if (MDB2::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ dropTable()
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/**
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* drop an existing table
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*
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* @param string $name name of the table that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropTable($name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$name = $db->quoteIdentifier($name, true);
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$result = $db->exec("DROP TABLE $name");
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if (MDB2::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ truncateTable()
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/**
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* Truncate an existing table (if the TRUNCATE TABLE syntax is not supported,
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* it falls back to a DELETE FROM TABLE query)
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*
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* @param string $name name of the table that should be truncated
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function truncateTable($name)
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$name = $db->quoteIdentifier($name, true);
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$result = $db->exec("DELETE FROM $name");
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if (MDB2::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ vacuum()
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/**
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* Optimize (vacuum) all the tables in the db (or only the specified table)
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* and optionally run ANALYZE.
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*
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* @param string $table table name (all the tables if empty)
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* @param array $options an array with driver-specific options:
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* - timeout [int] (in seconds) [mssql-only]
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* - analyze [boolean] [pgsql and mysql]
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* - full [boolean] [pgsql-only]
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* - freeze [boolean] [pgsql-only]
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*
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* @return mixed MDB2_OK success, a MDB2 error on failure
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* @access public
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*/
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function vacuum($table = null, $options = array())
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{
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$db = $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
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'method not implemented', __FUNCTION__);
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}
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// }}}
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// {{{ alterTable()
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/**
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* alter an existing table
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*
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* @param string $name name of the table that is intended to be changed.
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* @param array $changes associative array that contains the details of each type
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* of change that is intended to be performed. The types of
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* changes that are currently supported are defined as follows:
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*
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* name
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*
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* New name for the table.
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*
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* add
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*
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* Associative array with the names of fields to be added as
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* indexes of the array. The value of each entry of the array
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* should be set to another associative array with the properties
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* of the fields to be added. The properties of the fields should
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* be the same as defined by the MDB2 parser.
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*
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*
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* remove
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*
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* Associative array with the names of fields to be removed as indexes
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* of the array. Currently the values assigned to each entry are ignored.
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* An empty array should be used for future compatibility.
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*
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* rename
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*
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* Associative array with the names of fields to be renamed as indexes
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* of the array. The value of each entry of the array should be set to
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* another associative array with the entry named name with the new
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* field name and the entry named Declaration that is expected to contain
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* the portion of the field declaration already in DBMS specific SQL code
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* as it is used in the CREATE TABLE statement.
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*
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* change
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*
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* Associative array with the names of the fields to be changed as indexes
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* of the array. Keep in mind that if it is intended to change either the
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* name of a field and any other properties, the change array entries
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* should have the new names of the fields as array indexes.
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*
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* The value of each entry of the array should be set to another associative
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* array with the properties of the fields to that are meant to be changed as
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* array entries. These entries should be assigned to the new values of the
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* respective properties. The properties of the fields should be the same
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* as defined by the MDB2 parser.
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*
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* Example
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* array(
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* 'name' => 'userlist',
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* 'add' => array(
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* 'quota' => array(
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* 'type' => 'integer',
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* 'unsigned' => 1
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* )
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* ),
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* 'remove' => array(
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* 'file_limit' => array(),
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* 'time_limit' => array()
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* ),
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* 'change' => array(
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* 'name' => array(
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* 'length' => '20',
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* 'definition' => array(
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* 'type' => 'text',
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* 'length' => 20,
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* ),
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* )
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* ),
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* 'rename' => array(
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* 'sex' => array(
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* 'name' => 'gender',
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* 'definition' => array(
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* 'type' => 'text',
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* 'length' => 1,
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* 'default' => 'M',
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* ),
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* )
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* )
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* )
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*
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* @param boolean $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @access public
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|
*
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
*/
|
|
function alterTable($name, $changes, $check)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listDatabases()
|
|
|
|
/**
|
|
* list all databases
|
|
*
|
|
* @return mixed array of database names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listDatabases()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implementedd', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listUsers()
|
|
|
|
/**
|
|
* list all users
|
|
*
|
|
* @return mixed array of user names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listUsers()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listViews()
|
|
|
|
/**
|
|
* list all views in the current database
|
|
*
|
|
* @param string database, the current is default
|
|
* NB: not all the drivers can get the view names from
|
|
* a database other than the current one
|
|
* @return mixed array of view names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listViews($database = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableViews()
|
|
|
|
/**
|
|
* list the views in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced views should be found
|
|
* @return mixed array of view names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableViews($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableTriggers()
|
|
|
|
/**
|
|
* list all triggers in the database that reference a given table
|
|
*
|
|
* @param string table for which all referenced triggers should be found
|
|
* @return mixed array of trigger names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableTriggers($table = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listFunctions()
|
|
|
|
/**
|
|
* list all functions in the current database
|
|
*
|
|
* @return mixed array of function names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listFunctions()
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTables()
|
|
|
|
/**
|
|
* list all tables in the current database
|
|
*
|
|
* @param string database, the current is default.
|
|
* NB: not all the drivers can get the table names from
|
|
* a database other than the current one
|
|
* @return mixed array of table names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTables($database = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listTableFields()
|
|
|
|
/**
|
|
* list all fields in a table in the current database
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @return mixed array of field names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listTableFields($table)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createIndex()
|
|
|
|
/**
|
|
* Get the stucture of a field into an array
|
|
*
|
|
* @param string $table name of the table on which the index is to be created
|
|
* @param string $name name of the index to be created
|
|
* @param array $definition associative array that defines properties of the index to be created.
|
|
* Currently, only one property named FIELDS is supported. This property
|
|
* is also an associative with the names of the index fields as array
|
|
* indexes. Each entry of this array is set to another type of associative
|
|
* array that specifies properties of the index that are specific to
|
|
* each field.
|
|
*
|
|
* Currently, only the sorting property is supported. It should be used
|
|
* to define the sorting direction of the index. It may be set to either
|
|
* ascending or descending.
|
|
*
|
|
* Not all DBMS support index sorting direction configuration. The DBMS
|
|
* drivers of those that do not support it ignore this property. Use the
|
|
* function supports() to determine whether the DBMS driver can manage indexes.
|
|
*
|
|
* Example
|
|
* array(
|
|
* 'fields' => array(
|
|
* 'user_name' => array(
|
|
* 'sorting' => 'ascending'
|
|
* ),
|
|
* 'last_login' => array()
|
|
* )
|
|
* )
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createIndex($table, $name, $definition)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$table = $db->quoteIdentifier($table, true);
|
|
$name = $db->quoteIdentifier($db->getIndexName($name), true);
|
|
$query = "CREATE INDEX $name ON $table";
|
|
$fields = array();
|
|
foreach (array_keys($definition['fields']) as $field) {
|
|
$fields[] = $db->quoteIdentifier($field, true);
|
|
}
|
|
$query .= ' ('. implode(', ', $fields) . ')';
|
|
$result = $db->exec($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$name = $db->quoteIdentifier($db->getIndexName($name), true);
|
|
$result = $db->exec("DROP INDEX $name");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _getAdvancedFKOptions()
|
|
|
|
/**
|
|
* Return the FOREIGN KEY query section dealing with non-standard options
|
|
* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
|
|
*
|
|
* @param array $definition
|
|
* @return string
|
|
* @access protected
|
|
*/
|
|
function _getAdvancedFKOptions($definition)
|
|
{
|
|
return '';
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createConstraint()
|
|
|
|
/**
|
|
* create a constraint on a table
|
|
*
|
|
* @param string $table name of the table on which the constraint is to be created
|
|
* @param string $name name of the constraint to be created
|
|
* @param array $definition associative array that defines properties of the constraint to be created.
|
|
* The full structure of the array looks like this:
|
|
* <pre>
|
|
* array (
|
|
* [primary] => 0
|
|
* [unique] => 0
|
|
* [foreign] => 1
|
|
* [check] => 0
|
|
* [fields] => array (
|
|
* [field1name] => array() // one entry per each field covered
|
|
* [field2name] => array() // by the index
|
|
* [field3name] => array(
|
|
* [sorting] => ascending
|
|
* [position] => 3
|
|
* )
|
|
* )
|
|
* [references] => array(
|
|
* [table] => name
|
|
* [fields] => array(
|
|
* [field1name] => array( //one entry per each referenced field
|
|
* [position] => 1
|
|
* )
|
|
* )
|
|
* )
|
|
* [deferrable] => 0
|
|
* [initiallydeferred] => 0
|
|
* [onupdate] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
|
|
* [ondelete] => CASCADE|RESTRICT|SET NULL|SET DEFAULT|NO ACTION
|
|
* [match] => SIMPLE|PARTIAL|FULL
|
|
* );
|
|
* </pre>
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createConstraint($table, $name, $definition)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
$table = $db->quoteIdentifier($table, true);
|
|
$name = $db->quoteIdentifier($db->getIndexName($name), true);
|
|
$query = "ALTER TABLE $table ADD CONSTRAINT $name";
|
|
if (!empty($definition['primary'])) {
|
|
$query.= ' PRIMARY KEY';
|
|
} elseif (!empty($definition['unique'])) {
|
|
$query.= ' UNIQUE';
|
|
} elseif (!empty($definition['foreign'])) {
|
|
$query.= ' FOREIGN KEY';
|
|
}
|
|
$fields = array();
|
|
foreach (array_keys($definition['fields']) as $field) {
|
|
$fields[] = $db->quoteIdentifier($field, true);
|
|
}
|
|
$query .= ' ('. implode(', ', $fields) . ')';
|
|
if (!empty($definition['foreign'])) {
|
|
$query.= ' REFERENCES ' . $db->quoteIdentifier($definition['references']['table'], true);
|
|
$referenced_fields = array();
|
|
foreach (array_keys($definition['references']['fields']) as $field) {
|
|
$referenced_fields[] = $db->quoteIdentifier($field, true);
|
|
}
|
|
$query .= ' ('. implode(', ', $referenced_fields) . ')';
|
|
$query .= $this->_getAdvancedFKOptions($definition);
|
|
}
|
|
$result = $db->exec($query);
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropConstraint()
|
|
|
|
/**
|
|
* drop existing constraint
|
|
*
|
|
* @param string $table name of table that should be used in method
|
|
* @param string $name name of the constraint to be dropped
|
|
* @param string $primary hint if the constraint is primary
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function dropConstraint($table, $name, $primary = false)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$table = $db->quoteIdentifier($table, true);
|
|
$name = $db->quoteIdentifier($db->getIndexName($name), true);
|
|
$result = $db->exec("ALTER TABLE $table DROP CONSTRAINT $name");
|
|
if (MDB2::isError($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 = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ createSequence()
|
|
|
|
/**
|
|
* create sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be created
|
|
* @param string $start start value of the sequence; default is 1
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function createSequence($seq_name, $start = 1)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* drop existing sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be dropped
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function dropSequence($name)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ listSequences()
|
|
|
|
/**
|
|
* list all sequences in the current database
|
|
*
|
|
* @param string database, the current is default
|
|
* NB: not all the drivers can get the sequence names from
|
|
* a database other than the current one
|
|
* @return mixed array of sequence names on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function listSequences($database = null)
|
|
{
|
|
$db = $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
|
|
'method not implemented', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
?>
|