/**
* Given a class, object id, set of stateful ids and a list of changed fields (in a special format),
* return what statefulids need updating in this index
*
* Internal function used by SearchUpdater.
*
* @param $class
* @param $id
* @param $statefulids
* @param $fields
* @return array
*/
public function getDirtyIDs($class, $id, $statefulids, $fields)
{
$dirty = array();
// First, if this object is directly contained in the index, add it
foreach ($this->classes as $searchclass => $options) {
if ($searchclass == $class || $options['include_children'] && is_subclass_of($class, $searchclass)) {
$base = ClassInfo::baseDataClass($searchclass);
$dirty[$base] = array();
foreach ($statefulids as $statefulid) {
$key = serialize($statefulid);
$dirty[$base][$key] = $statefulid;
}
}
}
$current = SearchVariant::current_state();
// Then, for every derived field
foreach ($this->getDerivedFields() as $derivation) {
// If the this object is a subclass of any of the classes we want a field from
if (!SearchIntrospection::is_subclass_of($class, $derivation['classes'])) {
continue;
}
if (!array_intersect_key($fields, $derivation['fields'])) {
continue;
}
foreach (SearchVariant::reindex_states($class, false) as $state) {
SearchVariant::activate_state($state);
$ids = array($id);
foreach ($derivation['chain'] as $step) {
if ($step['through'] == 'has_one') {
$sql = new SQLQuery('"ID"', '"' . $step['class'] . '"', '"' . $step['foreignkey'] . '" IN (' . implode(',', $ids) . ')');
singleton($step['class'])->extend('augmentSQL', $sql);
$ids = $sql->execute()->column();
} else {
if ($step['through'] == 'has_many') {
$sql = new SQLQuery('"' . $step['class'] . '"."ID"', '"' . $step['class'] . '"', '"' . $step['otherclass'] . '"."ID" IN (' . implode(',', $ids) . ')');
$sql->addInnerJoin($step['otherclass'], '"' . $step['class'] . '"."ID" = "' . $step['otherclass'] . '"."' . $step['foreignkey'] . '"');
singleton($step['class'])->extend('augmentSQL', $sql);
$ids = $sql->execute()->column();
}
}
}
SearchVariant::activate_state($current);
if ($ids) {
$base = $derivation['base'];
if (!isset($dirty[$base])) {
$dirty[$base] = array();
}
foreach ($ids as $id) {
$statefulid = array('id' => $id, 'state' => $state);
$key = serialize($statefulid);
$dirty[$base][$key] = $statefulid;
}
}
}
}
return $dirty;
}
/**
* Send updates to the current search processor for execution
*
* @param array $writes
*/
public static function process_writes($writes)
{
foreach ($writes as $write) {
// For every index
foreach (FullTextSearch::get_indexes() as $index => $instance) {
// If that index as a field from this class
if (SearchIntrospection::is_subclass_of($write['class'], $instance->dependancyList)) {
// Get the dirty IDs
$dirtyids = $instance->getDirtyIDs($write['class'], $write['id'], $write['statefulids'], $write['fields']);
// Then add then then to the global list to deal with later
foreach ($dirtyids as $dirtyclass => $ids) {
if ($ids) {
if (!self::$processor) {
self::$processor = Injector::inst()->create('SearchUpdateProcessor');
}
self::$processor->addDirtyIDs($dirtyclass, $ids, $index);
}
}
}
}
}
// If we do have some work to do register the shutdown function to actually do the work
// Don't do it if we're testing - there's no database connection outside the test methods, so we'd
// just get errors
$runningTests = class_exists('SapphireTest', false) && SapphireTest::is_running_test();
if (self::$processor && !self::$registered && !$runningTests) {
register_shutdown_function(array("SearchUpdater", "flush_dirty_indexes"));
self::$registered = true;
}
}
