OracleUpdater.php

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<?php
class OracleUpdater extends DatabaseUpdater {

        protected $db;

        protected function getCoreUpdateList() {
                return array(
                        // 1.17
                        array( 'doNamespaceDefaults' ),
                        array( 'doFKRenameDeferr' ),
                        array( 'doFunctions17' ),
                        array( 'doSchemaUpgrade17' ),
                        array( 'doInsertPage0' ),
                        array( 'doRemoveNotNullEmptyDefaults' ),
                        array( 'addTable', 'user_former_groups', 'patch-user_former_groups.sql' ),

                        //1.18
                        array( 'addIndex',      'user',          'i02',       'patch-user_email_index.sql' ),
                        array( 'modifyField', 'user_properties', 'up_property', 'patch-up_property.sql' ),
                        array( 'addTable', 'uploadstash', 'patch-uploadstash.sql' ),
                        array( 'doRecentchangesFK2Cascade' ),

                        //1.19
                        array( 'addIndex', 'logging',       'i05',      'patch-logging_type_action_index.sql'),
                        array( 'addField', 'revision', 'rev_sha1', 'patch-rev_sha1_field.sql' ),
                        array( 'addField', 'archive', 'ar_sha1', 'patch-ar_sha1_field.sql' ),
                        array( 'doRemoveNotNullEmptyDefaults2' ),
                        array( 'addIndex', 'page', 'i03', 'patch-page_redirect_namespace_len.sql' ),
                        array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase.sql' ),
                        array( 'addField', 'uploadstash', 'us_chunk_inx', 'patch-us_chunk_inx_field.sql' ),
                        array( 'addField', 'job', 'job_timestamp', 'patch-job_timestamp_field.sql' ),
                        array( 'addIndex', 'job', 'i02', 'patch-job_timestamp_index.sql' ),
                        array( 'doPageRestrictionsPKUKFix' ),
                        array( 'modifyField', 'user_former_groups', 'ufg_group', 'patch-ufg_group-length-increase.sql' ),

                        // KEEP THIS AT THE BOTTOM!!
                        array( 'doRebuildDuplicateFunction' ),

                );
        }

        protected function doNamespaceDefaults() {
                $this->output( "Altering namespace fields with default value ... " );
                $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
                if ( $meta->defaultValue() != null ) {
                        $this->output( "defaults seem to present on namespace fields\n" );
                        return;
                }

                $this->applyPatch( 'patch_namespace_defaults.sql', false );
                $this->output( "ok\n" );
        }

        protected function doFKRenameDeferr() {
                $this->output( "Altering foreign keys ... " );
                $meta = $this->db->query( 'SELECT COUNT(*) cnt FROM user_constraints WHERE constraint_type = \'R\' AND deferrable = \'DEFERRABLE\'' );
                $row = $meta->fetchRow();
                if ( $row && $row['cnt'] > 0 ) {
                        $this->output( "at least one FK is deferrable, considering up to date\n" );
                        return;
                }

                $this->applyPatch( 'patch_fk_rename_deferred.sql', false );
                $this->output( "ok\n" );
        }

        protected function doFunctions17() {
                $this->output( "Recreating functions ... " );
                $this->applyPatch( 'patch_create_17_functions.sql', false );
                $this->output( "ok\n" );
        }

        protected function doSchemaUpgrade17() {
                $this->output( "Updating schema to 17 ... " );
                // check if iwlinks table exists which was added in 1.17
                if ( $this->db->tableExists( 'iwlinks' ) ) {
                        $this->output( "schema seem to be up to date.\n" );
                        return;
                }
                $this->applyPatch( 'patch_16_17_schema_changes.sql', false );
                $this->output( "ok\n" );
        }

        protected function doInsertPage0() {
                $this->output( "Inserting page 0 if missing ... " );
                $row = array(
                        'page_id' => 0,
                        'page_namespace' => 0,
                        'page_title' => ' ',
                        'page_counter' => 0,
                        'page_is_redirect' => 0,
                        'page_is_new' => 0,
                        'page_random' => 0,
                        'page_touched' => $this->db->timestamp(),
                        'page_latest' => 0,
                        'page_len' => 0
                );
                $this->db->insert( 'page', $row, 'OracleUpdater:doInserPage0', array( 'IGNORE' ) );
                $this->output( "ok\n" );
        }

        protected function doRemoveNotNullEmptyDefaults() {
                $this->output( "Removing not null empty constraints ... " );
                $meta = $this->db->fieldInfo( 'categorylinks' , 'cl_sortkey_prefix' );
                if ( $meta->isNullable() ) {
                        $this->output( "constraints seem to be removed\n" );
                        return;
                }
                $this->applyPatch( 'patch_remove_not_null_empty_defs.sql', false );
                $this->output( "ok\n" );
        }
        protected function doRemoveNotNullEmptyDefaults2() {
                $this->output( "Removing not null empty constraints ... " );
                $meta = $this->db->fieldInfo( 'ipblocks' , 'ipb_by_text' );
                if ( $meta->isNullable() ) {
                        $this->output( "constraints seem to be removed\n" );
                        return;
                }
                $this->applyPatch( 'patch_remove_not_null_empty_defs2.sql', false );
                $this->output( "ok\n" );
        }

        protected function doRecentchangesFK2Cascade() {
                $this->output( "Altering RECENTCHANGES_FK2 ... " );

                $meta = $this->db->query( 'SELECT 1 FROM all_constraints WHERE owner = \''.strtoupper($this->db->getDBname()).'\' AND constraint_name = \''.$this->db->tablePrefix().'RECENTCHANGES_FK2\' AND delete_rule = \'CASCADE\'' );
                $row = $meta->fetchRow();
                if ( $row ) {
                        $this->output( "FK up to date\n" );
                        return;
                }

                $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false );
                $this->output( "ok\n" );
        }

        protected function doPageRestrictionsPKUKFix() {
                $this->output( "Altering PAGE_RESTRICTIONS keys ... " );

                $meta = $this->db->query( 'SELECT column_name FROM all_cons_columns WHERE owner = \''.strtoupper($this->db->getDBname()).'\' AND constraint_name = \'MW_PAGE_RESTRICTIONS_PK\' AND rownum = 1' );
                $row = $meta->fetchRow();
                if ( $row['column_name'] == 'PR_ID' ) {
                        $this->output( "seems to be up to date.\n" );
                        return;
                }

                $this->applyPatch( 'patch-page_restrictions_pkuk_fix.sql', false );
                $this->output( "ok\n" );
        }

        protected function doRebuildDuplicateFunction() {
                $this->output( "Rebuilding duplicate function ... " );
                $this->applyPatch( 'patch_rebuild_dupfunc.sql', false );
                $this->output( "ok\n" );
        }

        public function doUpdates( $what = array( 'core', 'extensions', 'purge', 'stats' ) ) {
                parent::doUpdates( $what );

                $this->db->query( 'BEGIN fill_wiki_info; END;' );
        }

        protected function purgeCache() {
                # We can't guarantee that the user will be able to use TRUNCATE,
                # but we know that DELETE is available to us
                $this->output( "Purging caches..." );
                $this->db->delete( '/*Q*/'.$this->db->tableName( 'objectcache' ), '*', __METHOD__ );
                $this->output( "done.\n" );
        }

}