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106 lines
4.3 KiB
PHP
106 lines
4.3 KiB
PHP
<?php // $Id$
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.com //
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// //
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// Copyright (C) 1999 onwards Martin Dougiamas http://dougiamas.com //
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// (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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// This library includes all the required functions used to handle the DB
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// structure (DDL) independently of the underlying RDBMS in use. All the functions
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// rely on the XMLDBDriver classes to be able to generate the correct SQL
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// syntax needed by each DB.
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//
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// To define any structure to be created we'll use the schema defined
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// by the XMLDB classes, for tables, fields, indexes, keys and other
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// statements instead of direct handling of SQL sentences.
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//
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// This library should be used, exclusively, by the installation and
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// upgrade process of Moodle.
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//
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// For further documentation, visit http://docs.moodle.org/en/DDL_functions
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/// Add required library.
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require_once($CFG->libdir.'/xmlize.php');
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/// Add required XMLDB constants
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require_once($CFG->libdir.'/xmldb/xmldb_constants.php');
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/// Add required XMLDB DB classes
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require_once($CFG->libdir.'/xmldb/xmldb_object.php');
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require_once($CFG->libdir.'/xmldb/xmldb_file.php');
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require_once($CFG->libdir.'/xmldb/xmldb_structure.php');
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require_once($CFG->libdir.'/xmldb/xmldb_table.php');
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require_once($CFG->libdir.'/xmldb/xmldb_field.php');
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require_once($CFG->libdir.'/xmldb/xmldb_key.php');
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require_once($CFG->libdir.'/xmldb/xmldb_index.php');
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require_once($CFG->libdir.'/xmldb/xmldb_statement.php');
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require_once($CFG->libdir.'/ddl/sql_generator.php');
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require_once($CFG->libdir.'/ddl/database_manager.php');
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/**
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* DDL exception class, use instead of error() and "return false;" in ddl code.
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*/
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class ddl_exception extends moodle_exception {
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function __construct($errorcode, $a=NULL, $debuginfo=null) {
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parent::__construct($errorcode, '', '', $a, $debuginfo);
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}
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}
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/**
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* Table does not exist problem exception
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*/
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class ddl_table_missing_exception extends ddl_exception {
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function __construct($tablename, $debuginfo=null) {
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parent::__construct('ddltablenotexist', $tablename, $debuginfo);
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}
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}
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/**
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* Table does not exist problem exception
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*/
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class ddl_field_missing_exception extends ddl_exception {
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function __construct($fieldname, $tablename, $debuginfo=null) {
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$a = new object();
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$a->fieldname = $fieldname;
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$a->tablename = $tablename;
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parent::__construct('ddlfieldnotexist', $a, $debuginfo);
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}
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}
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/**
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* Error during changing db structure
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*/
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class ddl_change_structure_exception extends ddl_exception {
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public $error;
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public $sql;
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function __construct($error, $sql=null) {
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$this->error = $error;
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$this->sql = $sql;
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$errorinfo = s($error).'<br /><br />'.s($sql);
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parent::__construct('ddlexecuteerror', NULL, $errorinfo);
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}
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}
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