e99125adf1
* updater for 16->17 schema changes * i dedicate this revision to my greatest supporter ... Reedy :)
99 lines
2.6 KiB
PHP
99 lines
2.6 KiB
PHP
<?php
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/**
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* Oracle-specific updater.
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*
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* @file
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* @ingroup Deployment
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*/
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/**
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* Class for handling updates to Oracle databases.
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*
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* @ingroup Deployment
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* @since 1.17
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*/
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class OracleUpdater extends DatabaseUpdater {
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protected function __construct( DatabaseBase &$db, $shared ) {
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define( 'MEDIAWIKI_INSTALL', true );
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parent::__construct( $db, $shared );
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}
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protected function getCoreUpdateList() {
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return array(
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// 1.16
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array( 'doNamespaceDefaults' ),
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array( 'doFKRenameDeferr' ),
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array( 'doFunctions17' ),
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array( 'doSchemaUpgrade17' ),
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);
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}
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/**
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* MySQL uses datatype defaults for NULL inserted into NOT NULL fields
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* In namespace case that results into insert of 0 which is default namespace
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* Oracle inserts NULL, so namespace fields should have a default value
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*/
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protected function doNamespaceDefaults() {
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$this->output( "Altering namespace fields with default value ... " );
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$meta = $this->db->fieldInfo( 'page', 'page_namespace' );
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if ( $meta->defaultValue() != null ) {
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$this->output( "defaults seem to present on namespace fields\n" );
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return;
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}
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$this->applyPatch( 'patch_namespace_defaults.sql', false );
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$this->output( "ok\n" );
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}
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/**
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* Uniform FK names + deferrable state
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*/
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protected function doFKRenameDeferr() {
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$this->output( "Altering foreign keys ... " );
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$meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
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$row = $meta->fetchRow();
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if ( $row && $row['cnt'] > 0 ) {
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$this->output( "at least one FK is deferrable, considering up to date\n" );
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return;
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}
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$this->applyPatch( 'patch_fk_rename_deferred.sql', false );
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$this->output( "ok\n" );
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}
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/**
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* Recreate functions to 17 schema layout
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*/
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protected function doFunctions17() {
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$this->output( "Recreating functions ... " );
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$this->applyPatch( 'patch_create_17_functions.sql', false );
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$this->output( "ok\n" );
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}
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/**
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* Schema upgrade 16->17
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* there are no incremental patches prior to this
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*/
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protected function doSchemaUpgrade17() {
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$this->output( "Updating schema to 17 ... " );
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// check if iwlinks table exists which was added in 1.17
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if ( $this->db->tableExists( trim( $this->db->tableName( 'iwlinks' ) ) ) ) {
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$this->output( "schema seem to be up to date.\n" );
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return;
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}
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$this->applyPatch( 'patch_16_17_schema_changes.sql', false );
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$this->output( "ok\n" );
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}
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/**
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* Overload: after this action field info table has to be rebuilt
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*/
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public function doUpdates( $purge = true ) {
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parent::doUpdates();
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$this->db->doQuery( 'BEGIN fill_wiki_info; END;' );
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}
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}
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