forked from GNUsocial/gnu-social
598 lines
22 KiB
PHP
598 lines
22 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) 1998-2006 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann |
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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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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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require_once 'MDB2/Driver/Manager/Common.php';
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/**
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* MDB2 FrontBase driver for the management modules
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*
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* @package MDB2
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* @category Database
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* @author Frank M. Kromann <frank@kromann.info>
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*/
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class MDB2_Driver_Manager_fbsql extends MDB2_Driver_Manager_Common
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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 $options array with charset, collation info
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createDatabase($name, $options = array())
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$name = $db->quoteIdentifier($name, true);
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$query = "CREATE DATABASE $name";
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return $db->standaloneQuery($query, null, true);
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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 $name name of the database that should be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropDatabase($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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$query = "DELETE DATABASE $name";
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return $db->standaloneQuery($query, null, true);
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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 object $dbs database object that is extended by this class
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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 $name CASCADE");
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if (MDB2::isError($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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// {{{ 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 $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @access public
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*
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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*/
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function alterTable($name, $changes, $check)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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foreach ($changes as $change_name => $change){
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switch ($change_name) {
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case 'add':
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case 'remove':
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case 'change':
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case 'rename':
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case 'name':
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break;
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default:
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return $db->raiseError(MDB2_ERROR_CANNOT_ALTER, null, null,
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'change type "'.$change_name.'" not yet supported', __FUNCTION__);
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}
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}
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if ($check) {
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return MDB2_OK;
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}
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$query = '';
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if (!empty($changes['name'])) {
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$change_name = $db->quoteIdentifier($changes['name'], true);
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$query .= 'RENAME TO ' . $change_name;
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}
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if (!empty($changes['add']) && is_array($changes['add'])) {
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foreach ($changes['add'] as $field_name => $field) {
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if ($query) {
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$query.= ', ';
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}
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$query.= 'ADD ' . $db->getDeclaration($field['type'], $field_name, $field);
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}
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}
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if (!empty($changes['remove']) && is_array($changes['remove'])) {
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foreach ($changes['remove'] as $field_name => $field) {
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if ($query) {
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$query.= ', ';
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}
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$field_name = $db->quoteIdentifier($field_name, true);
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$query.= 'DROP ' . $field_name;
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}
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}
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$rename = array();
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if (!empty($changes['rename']) && is_array($changes['rename'])) {
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foreach ($changes['rename'] as $field_name => $field) {
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$rename[$field['name']] = $field_name;
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}
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}
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if (!empty($changes['change']) && is_array($changes['change'])) {
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foreach ($changes['change'] as $field_name => $field) {
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if ($query) {
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$query.= ', ';
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}
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if (isset($rename[$field_name])) {
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$old_field_name = $rename[$field_name];
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unset($rename[$field_name]);
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} else {
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$old_field_name = $field_name;
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}
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$old_field_name = $db->quoteIdentifier($old_field_name, true);
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$query.= "CHANGE $old_field_name " . $db->getDeclaration($field['definition']['type'], $old_field_name, $field['definition']);
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}
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}
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if (!empty($rename) && is_array($rename)) {
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foreach ($rename as $renamed_field_name => $renamed_field) {
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if ($query) {
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$query.= ', ';
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}
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$old_field_name = $rename[$renamed_field_name];
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$field = $changes['rename'][$old_field_name];
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$query.= 'CHANGE ' . $db->getDeclaration($field['definition']['type'], $old_field_name, $field['definition']);
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}
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}
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if (!$query) {
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return MDB2_OK;
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}
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$name = $db->quoteIdentifier($name, true);
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$result = $db->exec("ALTER TABLE $name $query");
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if (MDB2::isError($result)) {
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return $result;
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}
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return MDB2_OK;
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}
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// }}}
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// {{{ listDatabases()
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/**
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* list all databases
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*
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* @return mixed array of database names on success, a MDB2 error on failure
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* @access public
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*/
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function listDatabases()
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{
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$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 $db->raiseError(MDB2_ERROR_NOT_CAPABLE, null, null,
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'not capable', __FUNCTION__);
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}
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// }}}
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// {{{ listUsers()
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/**
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* list all users
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*
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* @return mixed array of user names on success, a MDB2 error on failure
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* @access public
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*/
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function listUsers()
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{
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$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 $db->queryCol('SELECT "user_name" FROM information_schema.users');
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}
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// }}}
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// {{{ listTables()
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/**
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* list all tables in the current database
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*
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* @return mixed array of table names on success, a MDB2 error on failure
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* @access public
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*/
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function listTables()
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$table_names = $db->queryCol('SELECT "table_name"'
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. ' FROM information_schema.tables'
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. ' t0, information_schema.schemata t1'
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. ' WHERE t0.schema_pk=t1.schema_pk AND'
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. ' "table_type" = \'BASE TABLE\''
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. ' AND "schema_name" = current_schema');
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if (MDB2::isError($table_names)) {
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return $table_names;
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}
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$result = array();
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for ($i = 0, $j = count($table_names); $i < $j; ++$i) {
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if (!$this->_fixSequenceName($table_names[$i], true)) {
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$result[] = $table_names[$i];
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}
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
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}
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return $result;
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}
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// }}}
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// {{{ listTableFields()
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/**
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* list all fields in a table in the current database
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*
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* @param string $table name of table that should be used in method
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* @return mixed array of field names on success, a MDB2 error on failure
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* @access public
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*/
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function listTableFields($table)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$table = $db->quoteIdentifier($table, true);
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$result = $db->queryCol("SHOW COLUMNS FROM $table");
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if (MDB2::isError($result)) {
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return $result;
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
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}
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return $result;
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}
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// }}}
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// {{{ dropIndex()
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/**
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* drop existing index
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*
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* @param string $table name of table that should be used in method
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* @param string $name name of the index to be dropped
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function dropIndex($table, $name)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$table = $db->quoteIdentifier($table, true);
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$name = $db->quoteIdentifier($db->getIndexName($name), true);
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$result = $db->exec("ALTER TABLE $table DROP INDEX $name");
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if (MDB2::isError($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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// {{{ listTableIndexes()
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/**
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* list all indexes in a table
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*
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* @param string $table name of table that should be used in method
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* @return mixed array of index names on success, a MDB2 error on failure
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* @access public
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*/
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function listTableIndexes($table)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$key_name = 'Key_name';
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$key_name = strtolower($key_name);
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} else {
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$key_name = strtoupper($key_name);
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}
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}
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW INDEX FROM $table";
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$indexes = $db->queryCol($query, 'text', $key_name);
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if (MDB2::isError($indexes)) {
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return $indexes;
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}
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$result = array();
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foreach ($indexes as $index) {
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if ($index != 'PRIMARY' && ($index = $this->_fixIndexName($index))) {
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$result[$index] = true;
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}
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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$result = array_change_key_case($result, $db->options['field_case']);
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}
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return array_keys($result);
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}
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// }}}
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// {{{ createSequence()
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/**
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* create sequence
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*
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* @param string $seq_name name of the sequence to be created
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* @param string $start start value of the sequence; default is 1
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* @return mixed MDB2_OK on success, a MDB2 error on failure
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* @access public
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*/
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function createSequence($seq_name, $start = 1)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
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$seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
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$query = "CREATE TABLE $sequence_name ($seqcol_name INTEGER DEFAULT UNIQUE, PRIMARY KEY($seqcol_name))";
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$res = $db->exec($query);
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$res = $db->exec("SET UNIQUE = 1 FOR $sequence_name");
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if (MDB2::isError($res)) {
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return $res;
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}
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if ($start == 1) {
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return MDB2_OK;
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}
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$res = $db->exec("INSERT INTO $sequence_name ($seqcol_name) VALUES (".($start-1).')');
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if (!MDB2::isError($res)) {
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return MDB2_OK;
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}
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// Handle error
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$result = $db->exec("DROP TABLE $sequence_name");
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if (MDB2::isError($result)) {
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|
return $db->raiseError($result, null, null,
|
|
'could not drop inconsistent sequence table', __FUNCTION__);
|
|
}
|
|
return $db->raiseError($res, null, null,
|
|
'could not create sequence table', __FUNCTION__);
|
|
}
|
|
|
|
// }}}
|
|
// {{{ dropSequence()
|
|
|
|
/**
|
|
* drop existing sequence
|
|
*
|
|
* @param string $seq_name name of the sequence to be dropped
|
|
* @return mixed MDB2_OK on success, a MDB2 error on failure
|
|
* @access public
|
|
*/
|
|
function dropSequence($seq_name)
|
|
{
|
|
$db =& $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
|
|
$result = $db->exec("DROP TABLE $sequence_name CASCADE");
|
|
if (MDB2::isError($result)) {
|
|
return $result;
|
|
}
|
|
return MDB2_OK;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ 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 =& $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
$table_names = $db->queryCol('SHOW TABLES', 'text');
|
|
if (MDB2::isError($table_names)) {
|
|
return $table_names;
|
|
}
|
|
$result = array();
|
|
for ($i = 0, $j = count($table_names); $i < $j; ++$i) {
|
|
if ($sqn = $this->_fixSequenceName($table_names[$i], 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;
|
|
}
|
|
// }}}
|
|
}
|
|
?>
|