4 * Class for handling database updates. Roughly based off of updaters.inc, with
5 * a few improvements :)
10 abstract class DatabaseUpdater
{
13 * Array of updates to perform on the database
17 protected $updates = array();
21 protected $shared = false;
23 protected $postDatabaseUpdateMaintenance = array(
24 'DeleteDefaultMessages'
27 protected function __construct( $db, $shared ) {
29 $this->shared
= $shared;
32 public static function newForDB( $db, $shared ) {
33 $type = $db->getType();
34 if( in_array( $type, Installer
::getDBTypes() ) ) {
35 $class = ucfirst( $type ) . 'Updater';
36 return new $class( $db, $shared );
38 throw new MWException( __METHOD__
. ' called for unsupported $wgDBtype' );
42 public function getDB() { return $this->db
; }
44 public function getPostDatabaseUpdateMaintenance() {
45 return $this->postDatabaseUpdateMaintenance
;
48 public function doUpdates() {
49 global $IP, $wgVersion;
50 require_once( "$IP/maintenance/updaters.inc" );
51 $this->updates
= array_merge( $this->getCoreUpdateList(),
52 $this->getOldGlobalUpdates() );
53 foreach ( $this->updates
as $params ) {
54 $func = array_shift( $params );
55 if( method_exists( $this, $func ) ) {
56 $func = array( $this, $func );
58 call_user_func_array( $func, $params );
61 $this->setAppliedUpdates( $wgVersion, $this->updates
);
64 protected function setAppliedUpdates( $version, $updates = array() ) {
65 if( !$this->canUseNewUpdatelog() ) {
68 $key = "updatelist-$version-" . time();
69 $this->db
->insert( 'updatelog',
70 array( 'ul_key' => $key, 'ul_value' => serialize( $updates ) ),
75 * Updatelog was changed in 1.17 to have a ul_value column so we can record
76 * more information about what kind of updates we've done (that's what this
77 * class does). Pre-1.17 wikis won't have this column, and really old wikis
78 * might not even have updatelog at all
82 protected function canUseNewUpdatelog() {
83 return $this->db
->tableExists( 'updatelog' ) &&
84 $this->db
->fieldExists( 'updatelog', 'ul_value' );
88 * Before 1.17, we used to handle updates via stuff like $wgUpdates,
89 * $wgExtNewTables/Fields/Indexes. This is nasty :) We refactored a lot
90 * of this in 1.17 but we want to remain back-compatible for awhile. So
91 * load up these old global-based things into our update list. We can't
92 * version these like we do with our core updates, so they have to go
95 private function getOldGlobalUpdates() {
96 global $wgUpdates, $wgExtNewFields, $wgExtNewTables,
97 $wgExtModifiedFields, $wgExtNewIndexes, $wgSharedDB, $wgSharedTables;
99 $doUser = $this->shared ?
100 $wgSharedDB && in_array( 'user', $wgSharedTables ) :
101 !$wgSharedDB ||
!in_array( 'user', $wgSharedTables );
105 if( isset( $wgUpdates[ $this->db
->getType() ] ) ) {
106 foreach( $wgUpdates[ $this->db
->getType() ] as $upd ) {
111 foreach ( $wgExtNewTables as $tableRecord ) {
113 'addTable', $tableRecord[0], $tableRecord[1], true
117 foreach ( $wgExtNewFields as $fieldRecord ) {
118 if ( $fieldRecord[0] != 'user' ||
$doUser ) {
120 'addField', $fieldRecord[0], $fieldRecord[1],
121 $fieldRecord[2], true
126 foreach ( $wgExtNewIndexes as $fieldRecord ) {
128 'addIndex', $fieldRecord[0], $fieldRecord[1],
129 $fieldRecord[2], true
133 foreach ( $wgExtModifiedFields as $fieldRecord ) {
135 'modify_field', $fieldRecord[0], $fieldRecord[1],
136 $fieldRecord[2], true
144 * Get an array of updates to perform on the database. Should return a
145 * mutli-dimensional array. The main key is the MediaWiki version (1.12,
146 * 1.13...) with the values being arrays of updates, identical to how
147 * updaters.inc did it (for now)
151 protected abstract function getCoreUpdateList();
154 * Applies a SQL patch
155 * @param $path String Path to the patch file
156 * @param $isFullPath Boolean Whether to treat $path as a relative or not
158 protected function applyPatch( $path, $isFullPath = false ) {
160 $this->db
->sourceFile( $path );
162 $this->db
->sourceFile( archive( $path ) );
167 * Add a new table to the database
168 * @param $name String Name of the new table
169 * @param $patch String Path to the patch file
170 * @param $fullpath Boolean Whether to treat $patch path as a relative or not
172 protected function addTable( $name, $patch, $fullpath = false ) {
173 if ( $this->db
->tableExists( $name ) ) {
174 wfOut( "...$name table already exists.\n" );
176 wfOut( "Creating $name table..." );
177 $this->applyPatch( $patch, $fullpath );
183 * Add a new field to an existing table
184 * @param $table String Name of the table to modify
185 * @param $field String Name of the new field
186 * @param $patch String Path to the patch file
187 * @param $fullpath Boolean Whether to treat $patch path as a relative or not
189 protected function addField( $table, $field, $patch, $fullpath = false ) {
190 if ( !$this->db
->tableExists( $table ) ) {
191 wfOut( "...$table table does not exist, skipping new field patch\n" );
192 } elseif ( $this->db
->fieldExists( $table, $field ) ) {
193 wfOut( "...have $field field in $table table.\n" );
195 wfOut( "Adding $field field to table $table..." );
196 $this->applyPatch( $patch, $fullpath );
202 * Add a new index to an existing table
203 * @param $table String Name of the table to modify
204 * @param $index String Name of the new index
205 * @param $patch String Path to the patch file
206 * @param $fullpath Boolean Whether to treat $patch path as a relative or not
208 function addIndex( $table, $index, $patch, $fullpath = false ) {
209 if ( $this->db
->indexExists( $table, $index ) ) {
210 wfOut( "...$index key already set on $table table.\n" );
212 wfOut( "Adding $index key to table $table... " );
213 $this->applyPatch( $patch, $fullpath );
219 class OracleUpdater
extends DatabaseUpdater
{
220 protected function getCoreUpdateList() {