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( 'doRebuildLocalisationCache' ),
  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
  51                         // till 2.0 i guess
  52                         array( 'doRebuildDuplicateFunction' ),
  53
  54                 );
  55         }
  56
  57         /**
  58          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
  59          * In namespace case that results into insert of 0 which is default namespace
  60          * Oracle inserts NULL, so namespace fields should have a default value
  61          */
  62         protected function doNamespaceDefaults() {
  63                 $this->output( "Altering namespace fields with default value ... " );
  64                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
  65                 if ( $meta->defaultValue() != null ) {
  66                         $this->output( "defaults seem to present on namespace fields\n" );
  67                         return;
  68                 }
  69
  70                 $this->applyPatch( 'patch_namespace_defaults.sql', false );
  71                 $this->output( "ok\n" );
  72         }
  73
  74         /**
  75          * Uniform FK names + deferrable state
  76          */
  77         protected function doFKRenameDeferr() {
  78                 $this->output( "Altering foreign keys ... " );
  79                 $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
  80                 $row = $meta->fetchRow();
  81                 if ( $row && $row['cnt'] > 0 ) {
  82                         $this->output( "at least one FK is deferrable, considering up to date\n" );
  83                         return;
  84                 }
  85
  86                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
  87                 $this->output( "ok\n" );
  88         }
  89
  90         /**
  91          * Recreate functions to 17 schema layout
  92          */
  93         protected function doFunctions17() {
  94                 $this->output( "Recreating functions ... " );
  95                 $this->applyPatch( 'patch_create_17_functions.sql', false );
  96                 $this->output( "ok\n" );
  97         }
  98
  99         /**
 100          * Schema upgrade 16->17
 101          * there are no incremental patches prior to this
 102          */
 103         protected function doSchemaUpgrade17() {
 104                 $this->output( "Updating schema to 17 ... " );
 105                 // check if iwlinks table exists which was added in 1.17
 106                 if ( $this->db->tableExists( 'iwlinks' ) ) {
 107                         $this->output( "schema seem to be up to date.\n" );
 108                         return;
 109                 }
 110                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
 111                 $this->output( "ok\n" );
 112         }
 113
 114         /**
 115          * Insert page (page_id = 0) to prevent FK constraint violation
 116          */
 117         protected function doInsertPage0() {
 118                 $this->output( "Inserting page 0 if missing ... " );
 119                 $row = array(
 120                         'page_id' => 0,
 121                         'page_namespace' => 0,
 122                         'page_title' => ' ',
 123                         'page_counter' => 0,
 124                         'page_is_redirect' => 0,
 125                         'page_is_new' => 0,
 126                         'page_random' => 0,
 127                         'page_touched' => $this->db->timestamp(),
 128                         'page_latest' => 0,
 129                         'page_len' => 0
 130                 );
 131                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 132                 $this->output( "ok\n" );
 133         }
 134
 135         /**
 136          * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
 137          * converted to NULL in Oracle
 138          */
 139         protected function doRemoveNotNullEmptyDefaults() {
 140                 $this->output( "Removing not null empty constraints ... " );
 141                 $meta = $this->db->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
 142                 if ( $meta->isNullable() ) {
 143                         $this->output( "constraints seem to be removed\n" );
 144                         return;
 145                 }
 146                 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
 147                 $this->output( "ok\n" );
 148         }
 149         protected function doRemoveNotNullEmptyDefaults2() {
 150                 $this->output( "Removing not null empty constraints ... " );
 151                 $meta = $this->db->fieldInfo( 'ipblocks' , 'ipb_by_text' );
 152                 if ( $meta->isNullable() ) {
 153                         $this->output( "constraints seem to be removed\n" );
 154                         return;
 155                 }
 156                 $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false );
 157                 $this->output( "ok\n" );
 158         }
 159
 160         /**
 161          * rebuilding of the function that duplicates tables for tests
 162          */
 163         protected function doRebuildDuplicateFunction() {
 164                 $this->output( "Rebuilding duplicate function ... " );
 165                 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
 166                 $this->output( "ok\n" );
 167         }
 168
 169         /**
 170          * Overload: after this action field info table has to be rebuilt
 171          *
 172          * @param $what array
 173          */
 174         public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
 175                 parent::doUpdates( $what );
 176
 177                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 178         }
 179
 180 }