+ $result = $dbr->select(
+ array( 'page' ),
+ array( 'page_namespace', 'page_title' ),
+ array( "page_namespace = $ns" ),
+ __METHOD__,
+ array( 'ORDER BY' => 'page_id' )
+ );
+
+ $start = 0;
+ $end = $dbr->numRows( $result );
+ $this->output( "Will purge $end pages from namespace $ns\n" );
+
+ # Do remaining chunk
+ $end += $this->mBatchSize - 1;
+ $blockStart = $start;
+ $blockEnd = $start + $this->mBatchSize - 1;
+
+ while( $blockEnd <= $end ) {
+ # Select pages we will purge:
+ $result = $dbr->select(
+ array( 'page' ),
+ array( 'page_namespace', 'page_title' ),
+ array( "page_namespace = $ns" ),
+ __METHOD__,
+ array( # conditions
+ 'ORDER BY' => 'page_id',
+ 'LIMIT' => $this->mBatchSize,
+ 'OFFSET' => $blockStart,
+ )
+ );
+ # Initialize/reset URLs to be purged
+ $urls = array();
+ foreach( $result as $row ) {
+ $title = Title::makeTitle( $row->page_namespace, $row->page_title );
+ $url = $title->getInternalUrl();
+ $urls[] = $url;
+ }
+
+ $this->sendPurgeRequest( $urls );
+
+ $blockStart += $this->mBatchSize;
+ $blockEnd += $this->mBatchSize;
+ }
+ }
+
+ /**
+ * Helper to purge an array of $urls
+ * @param $urls array List of URLS to purge from squids
+ */
+ private function sendPurgeRequest( $urls ) {
+ $this->output( "Purging " . count( $urls ). " urls\n" );
+ $u = new SquidUpdate( $urls );
+ $u->doUpdate();
+ }
+
+}