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<?php
require_once 'counter.php';
/**
* Rebuild the fulltext search indexes. This may take a while
* depending on the database size and server configuration.
*
* Rebuilding is faster if you drop the index and recreate it,
* but that will prevent searches from working while it runs.
*
* @file
* @todo document
* @ingroup Maintenance
*/
/** */
define( "RTI_CHUNK_SIZE", 500 );
function dropTextIndex( &$database )
{
$searchindex = $database->tableName( 'searchindex' );
if ( $database->indexExists( "searchindex", "si_title" ) ) {
echo "Dropping index...\n";
$sql = "ALTER TABLE $searchindex DROP INDEX si_title, DROP INDEX si_text";
$database->query($sql, "dropTextIndex" );
}
}
function createTextIndex( &$database )
{
$searchindex = $database->tableName( 'searchindex' );
echo "\nRebuild the index...\n";
$sql = "ALTER TABLE $searchindex ADD FULLTEXT si_title (si_title), " .
"ADD FULLTEXT si_text (si_text)";
$database->query($sql, "createTextIndex" );
}
function rebuildTextIndex( &$database )
{
list ($page, $revision, $text, $searchindex) = $database->tableNamesN( 'page', 'revision', 'text', 'searchindex' );
$sql = "SELECT MAX(page_id) AS count FROM $page";
$res = $database->query($sql, "rebuildTextIndex" );
$s = $database->fetchObject($res);
$count = $s->count;
echo "Rebuilding index fields for {$count} pages...\n";
$n = 0;
while ( $n < $count ) {
print_c( $n - 1, $n);
$end = $n + RTI_CHUNK_SIZE - 1;
$sql = "SELECT page_id, page_namespace, page_title, old_flags, old_text
FROM $page, $revision, $text
WHERE page_id BETWEEN $n AND $end
AND page_latest=rev_id
AND rev_text_id=old_id";
$res = $database->query($sql, "rebuildTextIndex" );
while( $s = $database->fetchObject($res) ) {
$revtext = Revision::getRevisionText( $s );
$u = new SearchUpdate( $s->page_id, $s->page_title, $revtext );
$u->doUpdate();
}
$database->freeResult( $res );
$n += RTI_CHUNK_SIZE;
}
}
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