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' ),
76 // KEEP THIS AT THE BOTTOM!!
77 array( 'doRebuildDuplicateFunction' ),
83 * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
84 * In namespace case that results into insert of 0 which is default namespace
85 * Oracle inserts NULL, so namespace fields should have a default value
87 protected function doNamespaceDefaults() {
88 $meta = $this->db
->fieldInfo( 'page', 'page_namespace' );
89 if ( $meta->defaultValue() != null ) {
93 $this->applyPatch( 'patch_namespace_defaults.sql', false, "Altering namespace fields with default value" );
97 * Uniform FK names + deferrable state
99 protected function doFKRenameDeferr() {
100 $meta = $this->db
->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
101 $row = $meta->fetchRow();
102 if ( $row && $row['cnt'] > 0 ) {
106 $this->applyPatch( 'patch_fk_rename_deferred.sql', false, "Altering foreign keys ... " );
110 * Recreate functions to 17 schema layout
112 protected function doFunctions17() {
113 $this->applyPatch( 'patch_create_17_functions.sql', false, "Recreating functions" );
117 * Schema upgrade 16->17
118 * there are no incremental patches prior to this
120 protected function doSchemaUpgrade17() {
121 // check if iwlinks table exists which was added in 1.17
122 if ( $this->db
->tableExists( 'iwlinks' ) ) {
125 $this->applyPatch( 'patch_16_17_schema_changes.sql', false, "Updating schema to 17" );
129 * Insert page (page_id = 0) to prevent FK constraint violation
131 protected function doInsertPage0() {
132 $this->output( "Inserting page 0 if missing ... " );
135 'page_namespace' => 0,
138 'page_is_redirect' => 0,
141 'page_touched' => $this->db
->timestamp(),
145 $this->db
->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
146 $this->output( "ok\n" );
150 * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
151 * converted to NULL in Oracle
153 protected function doRemoveNotNullEmptyDefaults() {
154 $meta = $this->db
->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
155 if ( $meta->isNullable() ) {
158 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false, "Removing not null empty constraints" );
161 protected function doRemoveNotNullEmptyDefaults2() {
162 $meta = $this->db
->fieldInfo( 'ipblocks' , 'ipb_by_text' );
163 if ( $meta->isNullable() ) {
166 $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false, "Removing not null empty constraints" );
170 * Removed forcing of invalid state on recentchanges_fk2.
171 * cascading taken in account in the deleting function
173 protected function doRecentchangesFK2Cascade() {
174 $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\'' );
175 $row = $meta->fetchRow();
180 $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false, "Altering RECENTCHANGES_FK2" );
184 * Fixed wrong PK, UK definition
186 protected function doPageRestrictionsPKUKFix() {
187 $this->output( "Altering PAGE_RESTRICTIONS keys ... " );
189 $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' );
190 $row = $meta->fetchRow();
191 if ( $row['column_name'] == 'PR_ID' ) {
192 $this->output( "seems to be up to date.\n" );
196 $this->applyPatch( 'patch-page_restrictions_pkuk_fix.sql', false );
197 $this->output( "ok\n" );
201 * rebuilding of the function that duplicates tables for tests
203 protected function doRebuildDuplicateFunction() {
204 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false, "Rebuilding duplicate function" );
208 * Overload: after this action field info table has to be rebuilt
212 public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
213 parent
::doUpdates( $what );
215 $this->db
->query( 'BEGIN fill_wiki_info; END;' );
219 * Overload: because of the DDL_MODE tablename escaping is a bit dodgy
221 protected function purgeCache() {
222 # We can't guarantee that the user will be able to use TRUNCATE,
223 # but we know that DELETE is available to us
224 $this->output( "Purging caches..." );
225 $this->db
->delete( '/*Q*/'.$this->db
->tableName( 'objectcache' ), '*', __METHOD__
);
226 $this->output( "done.\n" );