includes/installer/OracleUpdater.php

   1 <?php
   2 /**
   3  * Oracle-specific updater.
   4  *
   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.
   9  *
  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.
  14  *
  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
  19  *
  20  * @file
  21  * @ingroup Deployment
  22  */
  23
  24 /**
  25  * Class for handling updates to Oracle databases.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.17
  29  */
  30 class OracleUpdater extends DatabaseUpdater {
  31
  32         /**
  33          * Handle to the database subclass
  34          *
  35          * @var DatabaseOracle
  36          */
  37         protected $db;
  38
  39         protected function getCoreUpdateList() {
  40                 return array(
  41                         // 1.17
  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' ),
  49
  50                         //1.18
  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' ),
  55
  56                         //1.19
  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( 'addField', 'uploadstash', 'us_chunk_inx', 'patch-us_chunk_inx_field.sql' ),
  63                         array( 'addField', 'job', 'job_timestamp', 'patch-job_timestamp_field.sql' ),
  64                         array( 'addIndex', 'job', 'i02', 'patch-job_timestamp_index.sql' ),
  65                         array( 'doPageRestrictionsPKUKFix' ),
  66
  67                         //1.20
  68                         array( 'addIndex', 'ipblocks', 'i05', 'patch-ipblocks_i05_index.sql' ),
  69                         array( 'addIndex', 'revision', 'i05', 'patch-revision_i05_index.sql' ),
  70                         array( 'dropField', 'category', 'cat_hidden', 'patch-cat_hidden.sql' ),
  71
  72                         //1.21
  73                         array( 'addField', 'revision', 'rev_content_format',
  74                                 'patch-revision-rev_content_format.sql' ),
  75                         array( 'addField', 'revision', 'rev_content_model',
  76                                 'patch-revision-rev_content_model.sql' ),
  77                         array( 'addField', 'archive', 'ar_content_format', 'patch-archive-ar_content_format.sql' ),
  78                         array( 'addField', 'archive', 'ar_content_model', 'patch-archive-ar_content_model.sql' ),
  79                         array( 'addField', 'archive', 'ar_id', 'patch-archive-ar_id.sql' ),
  80                         array( 'addField', 'externallinks', 'el_id', 'patch-externallinks-el_id.sql' ),
  81                         array( 'addField', 'page', 'page_content_model', 'patch-page-page_content_model.sql' ),
  82                         array( 'dropField', 'site_stats', 'ss_admins', 'patch-ss_admins.sql' ),
  83                         array( 'dropField', 'recentchanges', 'rc_moved_to_title', 'patch-rc_moved.sql' ),
  84                         array( 'addTable', 'sites', 'patch-sites.sql' ),
  85                         array( 'addField', 'filearchive', 'fa_sha1', 'patch-fa_sha1.sql' ),
  86                         array( 'addField', 'job', 'job_token', 'patch-job_token.sql' ),
  87                         array( 'addField', 'job', 'job_attempts', 'patch-job_attempts.sql' ),
  88                         array( 'addField', 'uploadstash', 'us_props', 'patch-uploadstash-us_props.sql' ),
  89                         array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase-255.sql' ),
  90                         array( 'modifyField', 'user_former_groups', 'ufg_group',
  91                                 'patch-ufg_group-length-increase-255.sql' ),
  92
  93                         // KEEP THIS AT THE BOTTOM!!
  94                         array( 'doRebuildDuplicateFunction' ),
  95
  96                 );
  97         }
  98
  99         /**
 100          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
 101          * In namespace case that results into insert of 0 which is default namespace
 102          * Oracle inserts NULL, so namespace fields should have a default value
 103          */
 104         protected function doNamespaceDefaults() {
 105                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
 106                 if ( $meta->defaultValue() != null ) {
 107                         return;
 108                 }
 109
 110                 $this->applyPatch(
 111                         'patch_namespace_defaults.sql',
 112                         false,
 113                         'Altering namespace fields with default value'
 114                 );
 115         }
 116
 117         /**
 118          * Uniform FK names + deferrable state
 119          */
 120         protected function doFKRenameDeferr() {
 121                 $meta = $this->db->query( '
 122                         SELECT COUNT(*) cnt
 123                         FROM user_constraints
 124                         WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\''
 125                 );
 126                 $row = $meta->fetchRow();
 127                 if ( $row && $row['cnt'] > 0 ) {
 128                         return;
 129                 }
 130
 131                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false, "Altering foreign keys ... " );
 132         }
 133
 134         /**
 135          * Recreate functions to 17 schema layout
 136          */
 137         protected function doFunctions17() {
 138                 $this->applyPatch( 'patch_create_17_functions.sql', false, "Recreating functions" );
 139         }
 140
 141         /**
 142          * Schema upgrade 16->17
 143          * there are no incremental patches prior to this
 144          */
 145         protected function doSchemaUpgrade17() {
 146                 // check if iwlinks table exists which was added in 1.17
 147                 if ( $this->db->tableExists( 'iwlinks' ) ) {
 148                         return;
 149                 }
 150                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false, "Updating schema to 17" );
 151         }
 152
 153         /**
 154          * Insert page (page_id = 0) to prevent FK constraint violation
 155          */
 156         protected function doInsertPage0() {
 157                 $this->output( "Inserting page 0 if missing ... " );
 158                 $row = array(
 159                         'page_id' => 0,
 160                         'page_namespace' => 0,
 161                         'page_title' => ' ',
 162                         'page_counter' => 0,
 163                         'page_is_redirect' => 0,
 164                         'page_is_new' => 0,
 165                         'page_random' => 0,
 166                         'page_touched' => $this->db->timestamp(),
 167                         'page_latest' => 0,
 168                         'page_len' => 0
 169                 );
 170                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 171                 $this->output( "ok\n" );
 172         }
 173
 174         /**
 175          * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
 176          * converted to NULL in Oracle
 177          */
 178         protected function doRemoveNotNullEmptyDefaults() {
 179                 $meta = $this->db->fieldInfo( 'categorylinks', 'cl_sortkey_prefix' );
 180                 if ( $meta->isNullable() ) {
 181                         return;
 182                 }
 183                 $this->applyPatch(
 184                         'patch_remove_not_null_empty_defs.sql',
 185                         false,
 186                         'Removing not null empty constraints'
 187                 );
 188         }
 189
 190         protected function doRemoveNotNullEmptyDefaults2() {
 191                 $meta = $this->db->fieldInfo( 'ipblocks', 'ipb_by_text' );
 192                 if ( $meta->isNullable() ) {
 193                         return;
 194                 }
 195                 $this->applyPatch(
 196                         'patch_remove_not_null_empty_defs2.sql',
 197                         false,
 198                         'Removing not null empty constraints'
 199                 );
 200         }
 201
 202         /**
 203          * Removed forcing of invalid state on recentchanges_fk2.
 204          * cascading taken in account in the deleting function
 205          */
 206         protected function doRecentchangesFK2Cascade() {
 207                 $meta = $this->db->query( 'SELECT 1 FROM all_constraints WHERE owner = \'' .
 208                         strtoupper( $this->db->getDBname() ) .
 209                         '\' AND constraint_name = \'' .
 210                         $this->db->tablePrefix() .
 211                         'RECENTCHANGES_FK2\' AND delete_rule = \'CASCADE\''
 212                 );
 213                 $row = $meta->fetchRow();
 214                 if ( $row ) {
 215                         return;
 216                 }
 217
 218                 $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false, "Altering RECENTCHANGES_FK2" );
 219         }
 220
 221         /**
 222          * Fixed wrong PK, UK definition
 223          */
 224         protected function doPageRestrictionsPKUKFix() {
 225                 $this->output( "Altering PAGE_RESTRICTIONS keys ... " );
 226
 227                 $meta = $this->db->query( 'SELECT column_name FROM all_cons_columns WHERE owner = \'' .
 228                         strtoupper( $this->db->getDBname() ) .
 229                         '\' AND constraint_name = \'' .
 230                         $this->db->tablePrefix() .
 231                         'PAGE_RESTRICTIONS_PK\' AND rownum = 1'
 232                 );
 233                 $row = $meta->fetchRow();
 234                 if ( $row['column_name'] == 'PR_ID' ) {
 235                         $this->output( "seems to be up to date.\n" );
 236
 237                         return;
 238                 }
 239
 240                 $this->applyPatch( 'patch-page_restrictions_pkuk_fix.sql', false );
 241                 $this->output( "ok\n" );
 242         }
 243
 244         /**
 245          * rebuilding of the function that duplicates tables for tests
 246          */
 247         protected function doRebuildDuplicateFunction() {
 248                 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false, "Rebuilding duplicate function" );
 249         }
 250
 251         /**
 252          * Overload: after this action field info table has to be rebuilt
 253          *
 254          * @param $what array
 255          */
 256         public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
 257                 parent::doUpdates( $what );
 258
 259                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 260         }
 261
 262         /**
 263          * Overload: because of the DDL_MODE tablename escaping is a bit dodgy
 264          */
 265         public function purgeCache() {
 266                 # We can't guarantee that the user will be able to use TRUNCATE,
 267                 # but we know that DELETE is available to us
 268                 $this->output( "Purging caches..." );
 269                 $this->db->delete( '/*Q*/' . $this->db->tableName( 'objectcache' ), '*', __METHOD__ );
 270                 $this->output( "done.\n" );
 271         }
 272 }