3 * Oracle-specific updater.
5 * This program 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 2 of the License, or
8 * (at your option) any later version.
10 * This program 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.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
25 * Class for handling updates to Oracle databases.
30 class OracleUpdater
extends DatabaseUpdater
{
33 * Handle to the database subclass
39 protected function getCoreUpdateList() {
42 array( 'doNamespaceDefaults' ),
43 array( 'doFKRenameDeferr' ),
44 array( 'doFunctions17' ),
45 array( 'doSchemaUpgrade17' ),
46 array( 'doInsertPage0' ),
47 array( 'doRemoveNotNullEmptyDefaults' ),
48 array( 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ),
51 array( 'addIndex', 'user', 'i02', 'patch-user_email_index.sql' ),
52 array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
53 array( 'addTable', 'uploadstash', 'patch-uploadstash.sql' ),
54 array( 'doRecentchangesFK2Cascade' ),
57 array( 'addIndex', 'logging', 'i05', 'patch-logging_type_action_index.sql'),
58 array( 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1_field.sql' ),
59 array( 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1_field.sql' ),
60 array( 'doRemoveNotNullEmptyDefaults2' ),
61 array( 'addIndex', 'page', 'i03', 'patch-page_redirect_namespace_len.sql' ),
62 array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase.sql' ),
63 array( 'addField', 'uploadstash', 'us_chunk_inx', 'patch-us_chunk_inx_field.sql' ),
64 array( 'addField', 'job', 'job_timestamp', 'patch-job_timestamp_field.sql' ),
65 array( 'addIndex', 'job', 'i02', 'patch-job_timestamp_index.sql' ),
66 array( 'doPageRestrictionsPKUKFix' ),
67 array( 'modifyField', 'user_former_groups', 'ufg_group', 'patch-ufg_group-length-increase.sql' ),
70 array( 'addTable', 'config', 'patch-config.sql' ),
71 array( 'addIndex', 'ipblocks', 'i05', 'patch-ipblocks_i05_index.sql' ),
72 array( 'addIndex', 'revision', 'i05', 'patch-revision_i05_index.sql' ),
74 // KEEP THIS AT THE BOTTOM!!
75 array( 'doRebuildDuplicateFunction' ),
81 * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
82 * In namespace case that results into insert of 0 which is default namespace
83 * Oracle inserts NULL, so namespace fields should have a default value
85 protected function doNamespaceDefaults() {
86 $this->output( "Altering namespace fields with default value ... " );
87 $meta = $this->db
->fieldInfo( 'page', 'page_namespace' );
88 if ( $meta->defaultValue() != null ) {
89 $this->output( "defaults seem to present on namespace fields\n" );
93 $this->applyPatch( 'patch_namespace_defaults.sql', false );
94 $this->output( "ok\n" );
98 * Uniform FK names + deferrable state
100 protected function doFKRenameDeferr() {
101 $this->output( "Altering foreign keys ... " );
102 $meta = $this->db
->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
103 $row = $meta->fetchRow();
104 if ( $row && $row['cnt'] > 0 ) {
105 $this->output( "at least one FK is deferrable, considering up to date\n" );
109 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
110 $this->output( "ok\n" );
114 * Recreate functions to 17 schema layout
116 protected function doFunctions17() {
117 $this->output( "Recreating functions ... " );
118 $this->applyPatch( 'patch_create_17_functions.sql', false );
119 $this->output( "ok\n" );
123 * Schema upgrade 16->17
124 * there are no incremental patches prior to this
126 protected function doSchemaUpgrade17() {
127 $this->output( "Updating schema to 17 ... " );
128 // check if iwlinks table exists which was added in 1.17
129 if ( $this->db
->tableExists( 'iwlinks' ) ) {
130 $this->output( "schema seem to be up to date.\n" );
133 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
134 $this->output( "ok\n" );
138 * Insert page (page_id = 0) to prevent FK constraint violation
140 protected function doInsertPage0() {
141 $this->output( "Inserting page 0 if missing ... " );
144 'page_namespace' => 0,
147 'page_is_redirect' => 0,
150 'page_touched' => $this->db
->timestamp(),
154 $this->db
->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
155 $this->output( "ok\n" );
159 * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
160 * converted to NULL in Oracle
162 protected function doRemoveNotNullEmptyDefaults() {
163 $this->output( "Removing not null empty constraints ... " );
164 $meta = $this->db
->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
165 if ( $meta->isNullable() ) {
166 $this->output( "constraints seem to be removed\n" );
169 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
170 $this->output( "ok\n" );
172 protected function doRemoveNotNullEmptyDefaults2() {
173 $this->output( "Removing not null empty constraints ... " );
174 $meta = $this->db
->fieldInfo( 'ipblocks' , 'ipb_by_text' );
175 if ( $meta->isNullable() ) {
176 $this->output( "constraints seem to be removed\n" );
179 $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false );
180 $this->output( "ok\n" );
184 * Removed forcing of invalid state on recentchanges_fk2.
185 * cascading taken in account in the deleting function
187 protected function doRecentchangesFK2Cascade() {
188 $this->output( "Altering RECENTCHANGES_FK2 ... " );
190 $meta = $this->db
->query( 'SELECT 1 FROM all_constraints WHERE owner = \''.strtoupper($this->db
->getDBname()).'\' AND constraint_name = \''.$this->db
->tablePrefix().'RECENTCHANGES_FK2\' AND delete_rule = \'CASCADE\'' );
191 $row = $meta->fetchRow();
193 $this->output( "FK up to date\n" );
197 $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false );
198 $this->output( "ok\n" );
202 * Fixed wrong PK, UK definition
204 protected function doPageRestrictionsPKUKFix() {
205 $this->output( "Altering PAGE_RESTRICTIONS keys ... " );
207 $meta = $this->db
->query( 'SELECT column_name FROM all_cons_columns WHERE owner = \''.strtoupper($this->db
->getDBname()).'\' AND constraint_name = \'MW_PAGE_RESTRICTIONS_PK\' AND rownum = 1' );
208 $row = $meta->fetchRow();
209 if ( $row['column_name'] == 'PR_ID' ) {
210 $this->output( "seems to be up to date.\n" );
214 $this->applyPatch( 'patch-page_restrictions_pkuk_fix.sql', false );
215 $this->output( "ok\n" );
219 * rebuilding of the function that duplicates tables for tests
221 protected function doRebuildDuplicateFunction() {
222 $this->output( "Rebuilding duplicate function ... " );
223 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
224 $this->output( "ok\n" );
228 * Overload: after this action field info table has to be rebuilt
232 public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
233 parent
::doUpdates( $what );
235 $this->db
->query( 'BEGIN fill_wiki_info; END;' );
239 * Overload: because of the DDL_MODE tablename escaping is a bit dodgy
241 protected function purgeCache() {
242 # We can't guarantee that the user will be able to use TRUNCATE,
243 # but we know that DELETE is available to us
244 $this->output( "Purging caches..." );
245 $this->db
->delete( '/*Q*/'.$this->db
->tableName( 'objectcache' ), '*', __METHOD__
);
246 $this->output( "done.\n" );