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
  33                         //1.18
  34                         array( 'addIndex',      'user',          'i02',       'patch-user_email_index.sql' ),
  35                         array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
  36
  37                         // 1.19
  38                         array( 'addTable', 'config', 'patch-config.sql' ),
  39
  40                 );
  41         }
  42
  43         /**
  44          * MySQL uses datatype defaults for NULL inserted into NOT NULL fields
  45          * In namespace case that results into insert of 0 which is default namespace
  46          * Oracle inserts NULL, so namespace fields should have a default value
  47          */
  48         protected function doNamespaceDefaults() {
  49                 $this->output( "Altering namespace fields with default value ... " );
  50                 $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
  51                 if ( $meta->defaultValue() != null ) {
  52                         $this->output( "defaults seem to present on namespace fields\n" );
  53                         return;
  54                 }
  55
  56                 $this->applyPatch( 'patch_namespace_defaults.sql', false );
  57                 $this->output( "ok\n" );
  58         }
  59
  60         /**
  61          * Uniform FK names + deferrable state
  62          */
  63         protected function doFKRenameDeferr() {
  64                 $this->output( "Altering foreign keys ... " );
  65                 $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
  66                 $row = $meta->fetchRow();
  67                 if ( $row && $row['cnt'] > 0 ) {
  68                         $this->output( "at least one FK is deferrable, considering up to date\n" );
  69                         return;
  70                 }
  71
  72                 $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
  73                 $this->output( "ok\n" );
  74         }
  75
  76         /**
  77          * Recreate functions to 17 schema layout
  78          */
  79         protected function doFunctions17() {
  80                 $this->output( "Recreating functions ... " );
  81                 $this->applyPatch( 'patch_create_17_functions.sql', false );
  82                 $this->output( "ok\n" );
  83         }
  84
  85         /**
  86          * Schema upgrade 16->17
  87          * there are no incremental patches prior to this
  88          */
  89         protected function doSchemaUpgrade17() {
  90                 $this->output( "Updating schema to 17 ... " );
  91                 // check if iwlinks table exists which was added in 1.17
  92                 if ( $this->db->tableExists( $this->db->tableName( 'iwlinks' ) ) ) {
  93                         $this->output( "schema seem to be up to date.\n" );
  94                         return;
  95                 }
  96                 $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
  97                 $this->output( "ok\n" );
  98         }
  99
 100         /**
 101          * Insert page (page_id = 0) to prevent FK constraint violation
 102          */
 103         protected function doInsertPage0() {
 104                 $this->output( "Inserting page 0 if missing ... " );
 105                 $row = array(
 106                         'page_id' => 0,
 107                         'page_namespace' => 0,
 108                         'page_title' => ' ',
 109                         'page_counter' => 0,
 110                         'page_is_redirect' => 0,
 111                         'page_is_new' => 0,
 112                         'page_random' => 0,
 113                         'page_touched' => $this->db->timestamp(),
 114                         'page_latest' => 0,
 115                         'page_len' => 0
 116                 );
 117                 $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
 118                 $this->output( "ok\n" );
 119         }
 120
 121         /**
 122          * Overload: after this action field info table has to be rebuilt
 123          *
 124          * @param $what array
 125          */
 126         public function doUpdates( $what = array( 'core', 'extensions', 'purge' ) ) {
 127                 parent::doUpdates( $what );
 128
 129                 $this->db->query( 'BEGIN fill_wiki_info; END;' );
 130         }
 131
 132 }