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( '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' ),

            //1.20
            array( 'addIndex', 'ipblocks', 'i05', 'patch-ipblocks_i05_index.sql' ),
            array( 'addIndex', 'revision', 'i05', 'patch-revision_i05_index.sql' ),
            array( 'dropField', 'category', 'cat_hidden', 'patch-cat_hidden.sql' ),

            //1.21
            array( 'addField', 'revision', 'rev_content_format',
                'patch-revision-rev_content_format.sql' ),
            array( 'addField', 'revision', 'rev_content_model',
                'patch-revision-rev_content_model.sql' ),
            array( 'addField', 'archive', 'ar_content_format', 'patch-archive-ar_content_format.sql' ),
            array( 'addField', 'archive', 'ar_content_model', 'patch-archive-ar_content_model.sql' ),
            array( 'addField', 'archive', 'ar_id', 'patch-archive-ar_id.sql' ),
            array( 'addField', 'externallinks', 'el_id', 'patch-externallinks-el_id.sql' ),
            array( 'addField', 'page', 'page_content_model', 'patch-page-page_content_model.sql' ),
            array( 'dropField', 'site_stats', 'ss_admins', 'patch-ss_admins.sql' ),
            array( 'dropField', 'recentchanges', 'rc_moved_to_title', 'patch-rc_moved.sql' ),
            array( 'addTable', 'sites', 'patch-sites.sql' ),
            array( 'addField', 'filearchive', 'fa_sha1', 'patch-fa_sha1.sql' ),
            array( 'addField', 'job', 'job_token', 'patch-job_token.sql' ),
            array( 'addField', 'job', 'job_attempts', 'patch-job_attempts.sql' ),
            array( 'addField', 'uploadstash', 'us_props', 'patch-uploadstash-us_props.sql' ),
            array( 'modifyField', 'user_groups', 'ug_group', 'patch-ug_group-length-increase-255.sql' ),
            array( 'modifyField', 'user_former_groups', 'ufg_group',
                'patch-ufg_group-length-increase-255.sql' ),

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

        );
    }

    protected function doNamespaceDefaults() {
        $meta = $this->db->fieldInfo( 'page', 'page_namespace' );
        if ( $meta->defaultValue() != null ) {
            return;
        }

        $this->applyPatch(
            'patch_namespace_defaults.sql',
            false,
            'Altering namespace fields with default value'
        );
    }

    protected function doFKRenameDeferr() {
        $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 ) {
            return;
        }

        $this->applyPatch( 'patch_fk_rename_deferred.sql', false, "Altering foreign keys ... " );
    }

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

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

    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() {
        $meta = $this->db->fieldInfo( 'categorylinks', 'cl_sortkey_prefix' );
        if ( $meta->isNullable() ) {
            return;
        }
        $this->applyPatch(
            'patch_remove_not_null_empty_defs.sql',
            false,
            'Removing not null empty constraints'
        );
    }

    protected function doRemoveNotNullEmptyDefaults2() {
        $meta = $this->db->fieldInfo( 'ipblocks', 'ipb_by_text' );
        if ( $meta->isNullable() ) {
            return;
        }
        $this->applyPatch(
            'patch_remove_not_null_empty_defs2.sql',
            false,
            'Removing not null empty constraints'
        );
    }

    protected function doRecentchangesFK2Cascade() {
        $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 ) {
            return;
        }

        $this->applyPatch( 'patch_recentchanges_fk2_cascade.sql', false, "Altering RECENTCHANGES_FK2" );
    }

    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 = \'' .
            $this->db->tablePrefix() .
            '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->applyPatch( 'patch_rebuild_dupfunc.sql', false, "Rebuilding duplicate function" );
    }

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

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

    public 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" );
    }
}