See Release Notes
Long Term Support Release
Differences Between: [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]
1 <?php 2 3 // This file is part of Moodle - http://moodle.org/ 4 // 5 // Moodle is free software: you can redistribute it and/or modify 6 // it under the terms of the GNU General Public License as published by 7 // the Free Software Foundation, either version 3 of the License, or 8 // (at your option) any later version. 9 // 10 // Moodle is distributed in the hope that it will be useful, 11 // but WITHOUT ANY WARRANTY; without even the implied warranty of 12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 // GNU General Public License for more details. 14 // 15 // You should have received a copy of the GNU General Public License 16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 17 18 19 /** 20 * This library includes all the required functions used to handle the DB 21 * structure (DDL) independently of the underlying RDBMS in use. 22 * 23 * This library includes all the required functions used to handle the DB 24 * structure (DDL) independently of the underlying RDBMS in use. All the functions 25 * rely on the XMLDBDriver classes to be able to generate the correct SQL 26 * syntax needed by each DB. 27 * 28 * To define any structure to be created we'll use the schema defined 29 * by the XMLDB classes, for tables, fields, indexes, keys and other 30 * statements instead of direct handling of SQL sentences. 31 * 32 * This library should be used, exclusively, by the installation and 33 * upgrade process of Moodle. 34 * 35 * For further documentation, visit {@link http://docs.moodle.org/en/DDL_functions} 36 * 37 * @package core 38 * @subpackage ddl 39 * @copyright 2001-3001 Eloy Lafuente (stronk7) http://contiento.com 40 * 2008 Petr Skoda http://skodak.org 41 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 42 */ 43 44 defined('MOODLE_INTERNAL') || die(); 45 46 // Add required library 47 require_once($CFG->libdir.'/xmlize.php'); 48 49 // Add required XMLDB constants 50 require_once($CFG->libdir.'/xmldb/xmldb_constants.php'); 51 52 // Add required XMLDB DB classes 53 require_once($CFG->libdir.'/xmldb/xmldb_object.php'); 54 // Add required XMLDB DB classes 55 require_once($CFG->libdir.'/xmldb/xmldb_file.php'); 56 // Add required XMLDB DB classes 57 require_once($CFG->libdir.'/xmldb/xmldb_structure.php'); 58 // Add required XMLDB DB classes 59 require_once($CFG->libdir.'/xmldb/xmldb_table.php'); 60 // Add required XMLDB DB classes 61 require_once($CFG->libdir.'/xmldb/xmldb_field.php'); 62 // Add required XMLDB DB classes 63 require_once($CFG->libdir.'/xmldb/xmldb_key.php'); 64 // Add required XMLDB DB classes 65 require_once($CFG->libdir.'/xmldb/xmldb_index.php'); 66 67 require_once($CFG->libdir.'/ddl/sql_generator.php'); 68 require_once($CFG->libdir.'/ddl/database_manager.php'); 69 70 71 72 /** 73 * DDL exception class, use instead of print_error() and "return false;" in ddl code. 74 */ 75 class ddl_exception extends moodle_exception { 76 /** 77 * @param string $errorcode 78 * @param string $debuginfo 79 */ 80 function __construct($errorcode, $a=NULL, $debuginfo=null) { 81 parent::__construct($errorcode, '', '', $a, $debuginfo); 82 } 83 } 84 85 /** 86 * Table does not exist problem exception 87 */ 88 class ddl_table_missing_exception extends ddl_exception { 89 /** 90 * @param string $tablename 91 * @param string $debuginfo 92 */ 93 function __construct($tablename, $debuginfo=null) { 94 parent::__construct('ddltablenotexist', $tablename, $debuginfo); 95 } 96 } 97 98 /** 99 * Table does not exist problem exception 100 */ 101 class ddl_field_missing_exception extends ddl_exception { 102 /** 103 * @param string $fieldname 104 * @param string $tablename 105 * @param string $debuginfo 106 */ 107 function __construct($fieldname, $tablename, $debuginfo=null) { 108 $a = new stdClass(); 109 $a->fieldname = $fieldname; 110 $a->tablename = $tablename; 111 parent::__construct('ddlfieldnotexist', $a, $debuginfo); 112 } 113 } 114 115 /** 116 * Error during changing db structure 117 */ 118 class ddl_change_structure_exception extends ddl_exception { 119 /** @var string */ 120 public $error; 121 public $sql; 122 /** 123 * @param string $error 124 * @param string $sql 125 */ 126 function __construct($error, $sql=null) { 127 $this->error = $error; 128 $this->sql = $sql; 129 $errorinfo = $error."\n".$sql; 130 parent::__construct('ddlexecuteerror', NULL, $errorinfo); 131 } 132 } 133 134 /** 135 * Error changing db structure, caused by some dependency found 136 * like trying to modify one field having related indexes. 137 */ 138 class ddl_dependency_exception extends ddl_exception { 139 140 function __construct($targettype, $targetname, $offendingtype, $offendingname, $debuginfo=null) { 141 $a = new stdClass(); 142 $a->targettype = $targettype; 143 $a->targetname = $targetname; 144 $a->offendingtype = $offendingtype; 145 $a->offendingname = $offendingname; 146 147 parent::__construct('ddldependencyerror', $a, $debuginfo); 148 } 149 }
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