MDL-21840 backup - unify temp table support for backup & restore (mor…

…e coming)

lib/db/install.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" ?>
-<XMLDB PATH="lib/db" VERSION="20100705" COMMENT="XMLDB file for core Moodle tables"
+<XMLDB PATH="lib/db" VERSION="20100706" COMMENT="XMLDB file for core Moodle tables"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:noNamespaceSchemaLocation="../../lib/xmldb/xmldb.xsd"
 >
@@ -2648,8 +2648,10 @@
         <FIELD NAME="id" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="true" NEXT="backupid"/>
         <FIELD NAME="backupid" TYPE="char" LENGTH="32" NOTNULL="true" SEQUENCE="false" COMMENT="unique id of the backup" PREVIOUS="id" NEXT="itemname"/>
         <FIELD NAME="itemname" TYPE="char" LENGTH="30" NOTNULL="true" SEQUENCE="false" COMMENT="name of the component this id belongs to (usually table names)" PREVIOUS="backupid" NEXT="itemid"/>
-        <FIELD NAME="itemid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="false" COMMENT="id of the component (usually table-&amp;gt;id values)" PREVIOUS="itemname" NEXT="parentitemid"/>
-        <FIELD NAME="parentitemid" TYPE="int" LENGTH="10" NOTNULL="false" UNSIGNED="true" SEQUENCE="false" COMMENT="other id that can be useful to represent parent-child relations" PREVIOUS="itemid"/>
+        <FIELD NAME="itemid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" SEQUENCE="false" COMMENT="id of the component (usually table-&amp;gt;id values)" PREVIOUS="itemname" NEXT="newitemid"/>
+        <FIELD NAME="newitemid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" COMMENT="new id of the component after restore" PREVIOUS="itemid" NEXT="parentitemid"/>
+        <FIELD NAME="parentitemid" TYPE="int" LENGTH="10" NOTNULL="false" UNSIGNED="true" SEQUENCE="false" COMMENT="other id that can be useful to represent parent-child relations" PREVIOUS="newitemid" NEXT="info"/>
+        <FIELD NAME="info" TYPE="text" LENGTH="medium" NOTNULL="false" SEQUENCE="false" COMMENT="to store information related with the item, base64(serialize())" PREVIOUS="parentitemid"/>
       </FIELDS>
       <KEYS>
         <KEY NAME="primary" TYPE="primary" FIELDS="id" NEXT="backupid_itemname_itemid_uk"/>

lib/db/upgrade.php

@@ -4859,6 +4859,28 @@ function xmldb_main_upgrade($oldversion) {
         upgrade_main_savepoint(true, 2010070501);
     }
 
+    if ($oldversion < 2010070502) {
+
+    /// Define field newitemid to be added to backup_ids_template
+        $table = new xmldb_table('backup_ids_template');
+        $field = new xmldb_field('newitemid', XMLDB_TYPE_INTEGER, '10', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, '0', 'itemid');
+    /// Conditionally launch add field newitemid
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+    /// Define field info to be added to backup_ids_template
+        $table = new xmldb_table('backup_ids_template');
+        $field = new xmldb_field('info', XMLDB_TYPE_TEXT, 'medium', null, null, null, null, 'parentitemid');
+    /// Conditionally launch add field info
+        if (!$dbman->field_exists($table, $field)) {
+            $dbman->add_field($table, $field);
+        }
+
+    /// Main savepoint reached
+        upgrade_main_savepoint(true, 2010070502);
+    }
+
 
     return true;
 }

version.php

@@ -6,7 +6,7 @@
 // This is compared against the values stored in the database to determine
 // whether upgrades should be performed (see lib/db/*.php)
 
-    $version = 2010070501;  // YYYYMMDD   = date of the last version bump
+    $version = 2010070502;  // YYYYMMDD   = date of the last version bump
                             //         XX = daily increments
 
     $release = '2.0 Preview 4 (Build: 20100705)';  // Human-friendly version name