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( 'addTable', 'config', 'patch-config.sql' ),
  43                         array( 'addIndex', 'logging',       'i05',      'patch-logging_type_action_index.sql'),
  44                         array( 'addTable', 'globaltemplatelinks', 'patch-globaltemplatelinks.sql' ),
  45                         array( 'addTable', 'globalnamespaces', 'patch-globalnamespaces.sql' ),
  46                         array( 'addTable', 'globalinterwiki', 'patch-globalinterwiki.sql' ),
  47                         array( 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1_field.sql' ),
  48                         array( 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1_field.sql' ),
  49                         array( 'doRemoveNotNullEmptyDefaults2' ),
  50                         array( 'addIndex', 'page', 'i03', 'patch-page_redirect_namespace_len.sql' ),
  51                         array( 'modifyField', 'user', 'ug_group', 'patch-ug_group-length-increase.sql' ),
  52
  53                         // KEEP THIS AT THE BOTTOM!!
  54                         array( 'doRebuildDuplicateFunction' ),
  55
  56                 );
  57         }
  58
  59         /**
  60          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
  61          * In namespace case that results into insert of 0 which is default namespace
  62          * Oracle inserts NULL, so namespace fields should have a default value
  63          */
  64         protected function doNamespaceDefaults() {
  65                 $this->output( "Altering namespace fields with default value ... " );
  66                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
  67                 if ( $meta->defaultValue() != null ) {
  68                         $this->output( "defaults seem to present on namespace fields\n" );
  69                         return;
  70                 }
  71
  72                 $this->applyPatch( 'patch_namespace_defaults.sql', false );
  73                 $this->output( "ok\n" );
  74         }
  75
  76         /**
  77          * Uniform FK names + deferrable state
  78          */
  79         protected function doFKRenameDeferr() {
  80                 $this->output( "Altering foreign keys ... " );
  81                 $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
  82                 $row = $meta->fetchRow();
  83                 if ( $row && $row['cnt'] > 0 ) {
  84                         $this->output( "at least one FK is deferrable, considering up to date\n" );
  85                         return;
  86                 }
  87
  88                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
  89                 $this->output( "ok\n" );
  90         }
  91
  92         /**
  93          * Recreate functions to 17 schema layout
  94          */
  95         protected function doFunctions17() {
  96                 $this->output( "Recreating functions ... " );
  97                 $this->applyPatch( 'patch_create_17_functions.sql', false );
  98                 $this->output( "ok\n" );
  99         }
 100
 101         /**
 102          * Schema upgrade 16->17
 103          * there are no incremental patches prior to this
 104          */
 105         protected function doSchemaUpgrade17() {
 106                 $this->output( "Updating schema to 17 ... " );
 107                 // check if iwlinks table exists which was added in 1.17
 108                 if ( $this->db->tableExists( 'iwlinks' ) ) {
 109                         $this->output( "schema seem to be up to date.\n" );
 110                         return;
 111                 }
 112                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
 113                 $this->output( "ok\n" );
 114         }
 115
 116         /**
 117          * Insert page (page_id = 0) to prevent FK constraint violation
 118          */
 119         protected function doInsertPage0() {
 120                 $this->output( "Inserting page 0 if missing ... " );
 121                 $row = array(
 122                         'page_id' => 0,
 123                         'page_namespace' => 0,
 124                         'page_title' => ' ',
 125                         'page_counter' => 0,
 126                         'page_is_redirect' => 0,
 127                         'page_is_new' => 0,
 128                         'page_random' => 0,
 129                         'page_touched' => $this->db->timestamp(),
 130                         'page_latest' => 0,
 131                         'page_len' => 0
 132                 );
 133                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 134                 $this->output( "ok\n" );
 135         }
 136
 137         /**
 138          * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
 139          * converted to NULL in Oracle
 140          */
 141         protected function doRemoveNotNullEmptyDefaults() {
 142                 $this->output( "Removing not null empty constraints ... " );
 143                 $meta = $this->db->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
 144                 if ( $meta->isNullable() ) {
 145                         $this->output( "constraints seem to be removed\n" );
 146                         return;
 147                 }
 148                 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
 149                 $this->output( "ok\n" );
 150         }
 151         protected function doRemoveNotNullEmptyDefaults2() {
 152                 $this->output( "Removing not null empty constraints ... " );
 153                 $meta = $this->db->fieldInfo( 'ipblocks' , 'ipb_by_text' );
 154                 if ( $meta->isNullable() ) {
 155                         $this->output( "constraints seem to be removed\n" );
 156                         return;
 157                 }
 158                 $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false );
 159                 $this->output( "ok\n" );
 160         }
 161
 162         /**
 163          * Removed forcing of invalid state on recentchanges_fk2.
 164          * cascading taken in account in the deleting function
 165          */
 166         protected function doRecentchangesFK2Cascade() {
 167                 $this->output( "Altering RECENTCHANGES_FK2 ... " );
 168
 169                 $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\'' );
 170                 $row = $meta->fetchRow();
 171                 if ( $row ) {
 172                         $this->output( "FK up to date\n" );
 173                         return;
 174                 }
 175
 176                 $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false );
 177                 $this->output( "ok\n" );
 178         }
 179
 180         /**
 181          * rebuilding of the function that duplicates tables for tests
 182          */
 183         protected function doRebuildDuplicateFunction() {
 184                 $this->output( "Rebuilding duplicate function ... " );
 185                 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
 186                 $this->output( "ok\n" );
 187         }
 188
 189         /**
 190          * Overload: after this action field info table has to be rebuilt
 191          *
 192          * @param $what array
 193          */
 194         public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
 195                 parent::doUpdates( $what );
 196
 197                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 198         }
 199
 200         /**
 201          * Overload: because of the DDL_MODE tablename escaping is a bit dodgy
 202          */
 203         protected function purgeCache() {
 204                 # We can't guarantee that the user will be able to use TRUNCATE,
 205                 # but we know that DELETE is available to us
 206                 $this->output( "Purging caches..." );
 207                 $this->db->delete( '/*Q*/'.$this->db->tableName( 'objectcache' ), '*', __METHOD__ );
 208                 $this->output( "done.\n" );
 209         }
 210
 211 }