1 files changed, 97 insertions, 0 deletions
diff --git a/maintenance/rebuildrecentchanges.inc b/maintenance/rebuildrecentchanges.inc
new file mode 100644
index 00000000..e077da52
--- /dev/null
+++ b/maintenance/rebuildrecentchanges.inc
@@ -0,0 +1,97 @@
+<?php
+/**
+ * Rebuild recent changes table.
+ *
+ * @todo document
+ * @package MediaWiki
+ * @subpackage Maintenance
+ */
+
+/** */
+function rebuildRecentChangesTablePass1()
+{
+	$fname = 'rebuildRecentChangesTablePass1';
+	$dbw =& wfGetDB( DB_MASTER );
+	extract( $dbw->tableNames( 'recentchanges', 'cur', 'old' ) );
+
+	$dbw->delete( 'recentchanges', '*' );
+
+	print( "Loading from page and revision tables...\n" );
+
+	global $wgRCMaxAge;
+	$cutoff = time() - $wgRCMaxAge;
+	$dbw->insertSelect( 'recentchanges', array( 'page', 'revision' ),
+		array(
+			'rc_timestamp'  => 'rev_timestamp',
+			'rc_cur_time'   => 'rev_timestamp',
+			'rc_user'       => 'rev_user',
+			'rc_user_text'  => 'rev_user_text',
+			'rc_namespace'  => 'page_namespace',
+			'rc_title'      => 'page_title',
+			'rc_comment'    => 'rev_comment',
+			'rc_minor'      => 'rev_minor_edit',
+			'rc_bot'        => 0,
+			'rc_new'        => 'page_is_new',
+			'rc_cur_id'     => 'page_id',
+			'rc_this_oldid' => 'rev_id',
+			'rc_last_oldid' => 0, // is this ok?
+			'rc_type'       => $dbw->conditional( 'page_is_new != 0', RC_NEW, RC_EDIT ),
+		), array(
+			'rev_timestamp > ' . $dbw->addQuotes( $dbw->timestamp( $cutoff ) ),
+			'rev_page=page_id'
+		), $fname,
+		array(), // INSERT options
+		array( 'ORDER BY' => 'rev_timestamp', 'LIMIT' => 5000 ) // SELECT options
+	);
+}
+
+function rebuildRecentChangesTablePass2()
+{
+	$dbw =& wfGetDB( DB_MASTER );
+	extract( $dbw->tableNames( 'recentchanges', 'revision' ) );
+
+	$ns = $id = $count = 0;
+	$title = $ct =  "";
+
+	print( "Updating links...\n" );
+
+	# Fill in the rc_last_oldid field, which points to the previous edit
+	#
+	$sql = "SELECT rc_cur_id,rc_this_oldid,rc_timestamp FROM $recentchanges " .
+	  "ORDER BY rc_cur_id,rc_timestamp";
+	$res = $dbw->query( $sql, DB_MASTER );
+
+	$lastCurId = 0;
+	$lastOldId = 0;
+	while ( $obj = $dbw->fetchObject( $res ) ) {
+		$new = 0;
+		if( $obj->rc_cur_id != $lastCurId ) {
+			# Switch! Look up the previous last edit, if any
+			$lastCurId = intval( $obj->rc_cur_id );
+			$emit = $obj->rc_timestamp;
+			$sql2 = "SELECT rev_id FROM $revision " .
+				"WHERE rev_page={$lastCurId} ".
+				"AND rev_timestamp<'{$emit}' ORDER BY rev_timestamp DESC LIMIT 1";
+			$res2 = $dbw->query( $sql2 );
+			if( $row = $dbw->fetchObject( $res2 ) ) {
+				$lastOldId = intval( $row->rev_id );
+			} else {
+				# No previous edit
+				$lastOldId = 0;
+				$new = 1;
+			}
+			$dbw->freeResult( $res2 );
+		}
+		if( $lastCurId == 0 ) {
+			print "Uhhh, something wrong? No curid\n";
+		} else {
+			$sql3 = "UPDATE $recentchanges SET rc_last_oldid=$lastOldId,rc_new=$new,rc_type=$new " .
+				"WHERE rc_cur_id={$lastCurId} AND rc_this_oldid={$obj->rc_this_oldid}";
+			$dbw->query( $sql3 );
+			$lastOldId = intval( $obj->rc_this_oldid );
+		}
+	}
+	$dbw->freeResult( $res );
+}
+
+?>