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
  40                         //1.19
  41                         array( 'addTable', 'config', 'patch-config.sql' ),
  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
  52                         // till 2.0 i guess
  53                         array( 'doRebuildDuplicateFunction' ),
  54
  55                 );
  56         }
  57
  58         /**
  59          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
  60          * In namespace case that results into insert of 0 which is default namespace
  61          * Oracle inserts NULL, so namespace fields should have a default value
  62          */
  63         protected function doNamespaceDefaults() {
  64                 $this->output( "Altering namespace fields with default value ... " );
  65                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
  66                 if ( $meta->defaultValue() != null ) {
  67                         $this->output( "defaults seem to present on namespace fields\n" );
  68                         return;
  69                 }
  70
  71                 $this->applyPatch( 'patch_namespace_defaults.sql', false );
  72                 $this->output( "ok\n" );
  73         }
  74
  75         /**
  76          * Uniform FK names + deferrable state
  77          */
  78         protected function doFKRenameDeferr() {
  79                 $this->output( "Altering foreign keys ... " );
  80                 $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
  81                 $row = $meta->fetchRow();
  82                 if ( $row && $row['cnt'] > 0 ) {
  83                         $this->output( "at least one FK is deferrable, considering up to date\n" );
  84                         return;
  85                 }
  86
  87                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
  88                 $this->output( "ok\n" );
  89         }
  90
  91         /**
  92          * Recreate functions to 17 schema layout
  93          */
  94         protected function doFunctions17() {
  95                 $this->output( "Recreating functions ... " );
  96                 $this->applyPatch( 'patch_create_17_functions.sql', false );
  97                 $this->output( "ok\n" );
  98         }
  99
 100         /**
 101          * Schema upgrade 16->17
 102          * there are no incremental patches prior to this
 103          */
 104         protected function doSchemaUpgrade17() {
 105                 $this->output( "Updating schema to 17 ... " );
 106                 // check if iwlinks table exists which was added in 1.17
 107                 if ( $this->db->tableExists( 'iwlinks' ) ) {
 108                         $this->output( "schema seem to be up to date.\n" );
 109                         return;
 110                 }
 111                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
 112                 $this->output( "ok\n" );
 113         }
 114
 115         /**
 116          * Insert page (page_id = 0) to prevent FK constraint violation
 117          */
 118         protected function doInsertPage0() {
 119                 $this->output( "Inserting page 0 if missing ... " );
 120                 $row = array(
 121                         'page_id' => 0,
 122                         'page_namespace' => 0,
 123                         'page_title' => ' ',
 124                         'page_counter' => 0,
 125                         'page_is_redirect' => 0,
 126                         'page_is_new' => 0,
 127                         'page_random' => 0,
 128                         'page_touched' => $this->db->timestamp(),
 129                         'page_latest' => 0,
 130                         'page_len' => 0
 131                 );
 132                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 133                 $this->output( "ok\n" );
 134         }
 135
 136         /**
 137          * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
 138          * converted to NULL in Oracle
 139          */
 140         protected function doRemoveNotNullEmptyDefaults() {
 141                 $this->output( "Removing not null empty constraints ... " );
 142                 $meta = $this->db->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
 143                 if ( $meta->isNullable() ) {
 144                         $this->output( "constraints seem to be removed\n" );
 145                         return;
 146                 }
 147                 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
 148                 $this->output( "ok\n" );
 149         }
 150         protected function doRemoveNotNullEmptyDefaults2() {
 151                 $this->output( "Removing not null empty constraints ... " );
 152                 $meta = $this->db->fieldInfo( 'ipblocks' , 'ipb_by_text' );
 153                 if ( $meta->isNullable() ) {
 154                         $this->output( "constraints seem to be removed\n" );
 155                         return;
 156                 }
 157                 $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false );
 158                 $this->output( "ok\n" );
 159         }
 160
 161         /**
 162          * rebuilding of the function that duplicates tables for tests
 163          */
 164         protected function doRebuildDuplicateFunction() {
 165                 $this->output( "Rebuilding duplicate function ... " );
 166                 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
 167                 $this->output( "ok\n" );
 168         }
 169
 170         /**
 171          * Overload: after this action field info table has to be rebuilt
 172          *
 173          * @param $what array
 174          */
 175         public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
 176                 parent::doUpdates( $what );
 177
 178                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 179         }
 180
 181 }