3 * Rebuild the fulltext search indexes. This may take a while
4 * depending on the database size and server configuration.
6 * Rebuilding is faster if you drop the index and recreate it,
7 * but that will prevent searches from working while it runs.
11 * @subpackage Maintenance
15 define( "RTI_CHUNK_SIZE", 500 );
17 function dropTextIndex( &$database )
19 $searchindex = $database->tableName( 'searchindex' );
20 if ( $database->indexExists( "searchindex", "si_title" ) ) {
21 echo "Dropping index...\n";
22 $sql = "ALTER TABLE $searchindex DROP INDEX si_title, DROP INDEX si_text";
23 $database->query($sql, "dropTextIndex" );
27 function createTextIndex( &$database )
29 $searchindex = $database->tableName( 'searchindex' );
30 echo "Rebuild the index...\n";
31 $sql = "ALTER TABLE $searchindex ADD FULLTEXT si_title (si_title), " .
32 "ADD FULLTEXT si_text (si_text)";
33 $database->query($sql, "createTextIndex" );
36 function rebuildTextIndex( &$database )
38 extract( $database->tableNames( 'cur', 'searchindex' ) );
40 $sql = "SELECT MAX(cur_id) AS count FROM $cur";
41 $res = $database->query($sql, "rebuildTextIndex" );
42 $s = $database->fetchObject($res);
44 echo "Rebuilding index fields for {$count} pages...\n";
47 while ( $n < $count ) {
49 $end = $n + RTI_CHUNK_SIZE - 1;
50 $sql = "SELECT cur_id, cur_namespace, cur_title, cur_text FROM $cur WHERE cur_id BETWEEN $n AND $end";
51 $res = $database->query($sql, "rebuildTextIndex" );
53 while( $s = $database->fetchObject($res) ) {
54 $u = new SearchUpdate( $s->cur_id, $s->cur_title, $s->cur_text );
57 $database->freeResult( $res );