includes/installer/OracleUpdater.php

   1 <?php
   2 /**
   3  * Oracle-specific updater.
   4  *
   5  * @file
   6  * @ingroup Deployment
   7  */
   8
   9 /**
  10  * Class for handling updates to Oracle databases.
  11  *
  12  * @ingroup Deployment
  13  * @since 1.17
  14  */
  15 class OracleUpdater extends DatabaseUpdater {
  16
  17         /**
  18          * Handle to the database subclass
  19          *
  20          * @var DatabaseOracle
  21          */
  22         protected $db;
  23
  24         protected function getCoreUpdateList() {
  25                 return array(
  26                         // 1.17
  27                         array( 'doNamespaceDefaults' ),
  28                         array( 'doFKRenameDeferr' ),
  29                         array( 'doFunctions17' ),
  30                         array( 'doSchemaUpgrade17' ),
  31                         array( 'doInsertPage0' ),
  32                         array( 'doRemoveNotNullEmptyDefaults' ),
  33                         array( 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ),
  34
  35                         //1.18
  36                         array( 'addIndex',      'user',          'i02',       'patch-user_email_index.sql' ),
  37                         array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
  38                         array( 'addTable', 'uploadstash', 'patch-uploadstash.sql' ),
  39                         array( 'doRecentchangesFK2Cascade' ),
  40
  41                         //1.19
  42                         array( 'addIndex', 'logging',       'i05',      'patch-logging_type_action_index.sql'),
  43                         array( 'addTable', 'globaltemplatelinks', 'patch-globaltemplatelinks.sql' ),
  44                         array( 'addTable', 'globalnamespaces', 'patch-globalnamespaces.sql' ),
  45                         array( 'addTable', 'globalinterwiki', 'patch-globalinterwiki.sql' ),
  46                         array( 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1_field.sql' ),
  47                         array( 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1_field.sql' ),
  48                         array( 'doRemoveNotNullEmptyDefaults2' ),
  49                         array( 'addIndex', 'page', 'i03', 'patch-page_redirect_namespace_len.sql' ),
  50                         array( 'modifyField', 'user', 'ug_group', 'patch-ug_group-length-increase.sql' ),
  51                         array( 'addField', 'uploadstash', 'us_chunk_inx', 'patch-us_chunk_inx_field.sql' ),
  52                         array( 'addField', 'job', 'job_timestamp', 'patch-job_timestamp_field.sql' ),
  53                         array( 'addIndex', 'job', 'i02', 'patch-job_timestamp_index.sql' ),
  54
  55                         //1.20
  56                         array( 'addTable', 'config', 'patch-config.sql' ),
  57
  58                         // KEEP THIS AT THE BOTTOM!!
  59                         array( 'doRebuildDuplicateFunction' ),
  60
  61                 );
  62         }
  63
  64         /**
  65          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
  66          * In namespace case that results into insert of 0 which is default namespace
  67          * Oracle inserts NULL, so namespace fields should have a default value
  68          */
  69         protected function doNamespaceDefaults() {
  70                 $this->output( "Altering namespace fields with default value ... " );
  71                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
  72                 if ( $meta->defaultValue() != null ) {
  73                         $this->output( "defaults seem to present on namespace fields\n" );
  74                         return;
  75                 }
  76
  77                 $this->applyPatch( 'patch_namespace_defaults.sql', false );
  78                 $this->output( "ok\n" );
  79         }
  80
  81         /**
  82          * Uniform FK names + deferrable state
  83          */
  84         protected function doFKRenameDeferr() {
  85                 $this->output( "Altering foreign keys ... " );
  86                 $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
  87                 $row = $meta->fetchRow();
  88                 if ( $row && $row['cnt'] > 0 ) {
  89                         $this->output( "at least one FK is deferrable, considering up to date\n" );
  90                         return;
  91                 }
  92
  93                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
  94                 $this->output( "ok\n" );
  95         }
  96
  97         /**
  98          * Recreate functions to 17 schema layout
  99          */
 100         protected function doFunctions17() {
 101                 $this->output( "Recreating functions ... " );
 102                 $this->applyPatch( 'patch_create_17_functions.sql', false );
 103                 $this->output( "ok\n" );
 104         }
 105
 106         /**
 107          * Schema upgrade 16->17
 108          * there are no incremental patches prior to this
 109          */
 110         protected function doSchemaUpgrade17() {
 111                 $this->output( "Updating schema to 17 ... " );
 112                 // check if iwlinks table exists which was added in 1.17
 113                 if ( $this->db->tableExists( 'iwlinks' ) ) {
 114                         $this->output( "schema seem to be up to date.\n" );
 115                         return;
 116                 }
 117                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
 118                 $this->output( "ok\n" );
 119         }
 120
 121         /**
 122          * Insert page (page_id = 0) to prevent FK constraint violation
 123          */
 124         protected function doInsertPage0() {
 125                 $this->output( "Inserting page 0 if missing ... " );
 126                 $row = array(
 127                         'page_id' => 0,
 128                         'page_namespace' => 0,
 129                         'page_title' => ' ',
 130                         'page_counter' => 0,
 131                         'page_is_redirect' => 0,
 132                         'page_is_new' => 0,
 133                         'page_random' => 0,
 134                         'page_touched' => $this->db->timestamp(),
 135                         'page_latest' => 0,
 136                         'page_len' => 0
 137                 );
 138                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 139                 $this->output( "ok\n" );
 140         }
 141
 142         /**
 143          * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
 144          * converted to NULL in Oracle
 145          */
 146         protected function doRemoveNotNullEmptyDefaults() {
 147                 $this->output( "Removing not null empty constraints ... " );
 148                 $meta = $this->db->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
 149                 if ( $meta->isNullable() ) {
 150                         $this->output( "constraints seem to be removed\n" );
 151                         return;
 152                 }
 153                 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
 154                 $this->output( "ok\n" );
 155         }
 156         protected function doRemoveNotNullEmptyDefaults2() {
 157                 $this->output( "Removing not null empty constraints ... " );
 158                 $meta = $this->db->fieldInfo( 'ipblocks' , 'ipb_by_text' );
 159                 if ( $meta->isNullable() ) {
 160                         $this->output( "constraints seem to be removed\n" );
 161                         return;
 162                 }
 163                 $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false );
 164                 $this->output( "ok\n" );
 165         }
 166
 167         /**
 168          * Removed forcing of invalid state on recentchanges_fk2.
 169          * cascading taken in account in the deleting function
 170          */
 171         protected function doRecentchangesFK2Cascade() {
 172                 $this->output( "Altering RECENTCHANGES_FK2 ... " );
 173
 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();
 176                 if ( $row ) {
 177                         $this->output( "FK up to date\n" );
 178                         return;
 179                 }
 180
 181                 $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false );
 182                 $this->output( "ok\n" );
 183         }
 184
 185         /**
 186          * rebuilding of the function that duplicates tables for tests
 187          */
 188         protected function doRebuildDuplicateFunction() {
 189                 $this->output( "Rebuilding duplicate function ... " );
 190                 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
 191                 $this->output( "ok\n" );
 192         }
 193
 194         /**
 195          * Overload: after this action field info table has to be rebuilt
 196          *
 197          * @param $what array
 198          */
 199         public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
 200                 parent::doUpdates( $what );
 201
 202                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 203         }
 204
 205         /**
 206          * Overload: because of the DDL_MODE tablename escaping is a bit dodgy
 207          */
 208         protected function purgeCache() {
 209                 # We can't guarantee that the user will be able to use TRUNCATE,
 210                 # but we know that DELETE is available to us
 211                 $this->output( "Purging caches..." );
 212                 $this->db->delete( '/*Q*/'.$this->db->tableName( 'objectcache' ), '*', __METHOD__ );
 213                 $this->output( "done.\n" );
 214         }
 215
 216 }