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
  34                         //1.18
  35                         array( 'addIndex',      'user',          'i02',       'patch-user_email_index.sql' ),
  36                         array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
  37                         array( 'addTable', 'config', 'patch-config.sql' ),
  38
  39
  40                         // till 2.0 i guess
  41                         array( 'doRebuildDuplicateFunction' ),
  42
  43                 );
  44         }
  45
  46         /**
  47          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
  48          * In namespace case that results into insert of 0 which is default namespace
  49          * Oracle inserts NULL, so namespace fields should have a default value
  50          */
  51         protected function doNamespaceDefaults() {
  52                 $this->output( "Altering namespace fields with default value ... " );
  53                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
  54                 if ( $meta->defaultValue() != null ) {
  55                         $this->output( "defaults seem to present on namespace fields\n" );
  56                         return;
  57                 }
  58
  59                 $this->applyPatch( 'patch_namespace_defaults.sql', false );
  60                 $this->output( "ok\n" );
  61         }
  62
  63         /**
  64          * Uniform FK names + deferrable state
  65          */
  66         protected function doFKRenameDeferr() {
  67                 $this->output( "Altering foreign keys ... " );
  68                 $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
  69                 $row = $meta->fetchRow();
  70                 if ( $row && $row['cnt'] > 0 ) {
  71                         $this->output( "at least one FK is deferrable, considering up to date\n" );
  72                         return;
  73                 }
  74
  75                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
  76                 $this->output( "ok\n" );
  77         }
  78
  79         /**
  80          * Recreate functions to 17 schema layout
  81          */
  82         protected function doFunctions17() {
  83                 $this->output( "Recreating functions ... " );
  84                 $this->applyPatch( 'patch_create_17_functions.sql', false );
  85                 $this->output( "ok\n" );
  86         }
  87
  88         /**
  89          * Schema upgrade 16->17
  90          * there are no incremental patches prior to this
  91          */
  92         protected function doSchemaUpgrade17() {
  93                 $this->output( "Updating schema to 17 ... " );
  94                 // check if iwlinks table exists which was added in 1.17
  95                 if ( $this->db->tableExists( 'iwlinks' ) ) {
  96                         $this->output( "schema seem to be up to date.\n" );
  97                         return;
  98                 }
  99                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
 100                 $this->output( "ok\n" );
 101         }
 102
 103         /**
 104          * Insert page (page_id = 0) to prevent FK constraint violation
 105          */
 106         protected function doInsertPage0() {
 107                 $this->output( "Inserting page 0 if missing ... " );
 108                 $row = array(
 109                         'page_id' => 0,
 110                         'page_namespace' => 0,
 111                         'page_title' => ' ',
 112                         'page_counter' => 0,
 113                         'page_is_redirect' => 0,
 114                         'page_is_new' => 0,
 115                         'page_random' => 0,
 116                         'page_touched' => $this->db->timestamp(),
 117                         'page_latest' => 0,
 118                         'page_len' => 0
 119                 );
 120                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 121                 $this->output( "ok\n" );
 122         }
 123
 124         /**
 125          * Remove DEFAULT '' NOT NULL constraints from fields as '' is internally
 126          * converted to NULL in Oracle
 127          */
 128         protected function doRemoveNotNullEmptyDefaults() {
 129                 $this->output( "Removing not null empty constraints ... " );
 130                 $meta = $this->db->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
 131                 if ( $meta->isNullable() ) {
 132                         $this->output( "constraints seem to be removed\n" );
 133                         return;
 134                 }
 135                 $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
 136                 $this->output( "ok\n" );
 137         }
 138
 139         /**
 140          * rebuilding of the function that duplicates tables for tests
 141          */
 142         protected function doRebuildDuplicateFunction() {
 143                 $this->output( "Rebuilding duplicate function ... " );
 144                 $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
 145                 $this->output( "ok\n" );
 146         }
 147
 148         /**
 149          * Overload: after this action field info table has to be rebuilt
 150          *
 151          * @param $what array
 152          */
 153         public function doUpdates( $what = array( 'core', 'extensions', 'purge' ) ) {
 154                 parent::doUpdates( $what );
 155
 156                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 157         }
 158
 159 }