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PhabricatorFerretFulltextStorageEngine.php
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Mon, Nov 25, 08:19

PhabricatorFerretFulltextStorageEngine.php
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<?php
final class PhabricatorFerretFulltextStorageEngine
extends PhabricatorFulltextStorageEngine {
private $fulltextTokens = array();
private $engineLimits;
public function getEngineIdentifier() {
return 'mysql';
}
public function getHostType() {
return new PhabricatorMySQLSearchHost($this);
}
public function reindexAbstractDocument(
PhabricatorSearchAbstractDocument $doc) {
// NOTE: The Ferret engine indexes are rebuilt by an extension rather than
// by the main fulltext engine, and are always built regardless of
// configuration.
return;
}
public function executeSearch(PhabricatorSavedQuery $query) {
$all_objects = id(new PhutilClassMapQuery())
->setAncestorClass('PhabricatorFerretInterface')
->execute();
$type_map = array();
foreach ($all_objects as $object) {
$phid_type = phid_get_type($object->generatePHID());
$type_map[$phid_type] = array(
'object' => $object,
'engine' => $object->newFerretEngine(),
);
}
$types = $query->getParameter('types');
if ($types) {
$type_map = array_select_keys($type_map, $types);
}
$offset = (int)$query->getParameter('offset', 0);
$limit = (int)$query->getParameter('limit', 25);
// NOTE: For now, it's okay to query with the omnipotent viewer here
// because we're just returning PHIDs which we'll filter later.
$viewer = PhabricatorUser::getOmnipotentUser();
$type_results = array();
$metadata = array();
foreach ($type_map as $type => $spec) {
$engine = $spec['engine'];
$object = $spec['object'];
$local_query = new PhabricatorSavedQuery();
$local_query->setParameter('query', $query->getParameter('query'));
$project_phids = $query->getParameter('projectPHIDs');
if ($project_phids) {
$local_query->setParameter('projectPHIDs', $project_phids);
}
$subscriber_phids = $query->getParameter('subscriberPHIDs');
if ($subscriber_phids) {
$local_query->setParameter('subscriberPHIDs', $subscriber_phids);
}
$search_engine = $engine->newSearchEngine()
->setViewer($viewer);
$engine_query = $search_engine->buildQueryFromSavedQuery($local_query)
->setViewer($viewer);
$engine_query
->withFerretQuery($engine, $query)
->setOrder('relevance')
->setLimit($offset + $limit);
$results = $engine_query->execute();
$results = mpull($results, null, 'getPHID');
$type_results[$type] = $results;
$metadata += $engine_query->getFerretMetadata();
if (!$this->fulltextTokens) {
$this->fulltextTokens = $engine_query->getFerretTokens();
}
}
$list = array();
foreach ($type_results as $type => $results) {
$list += $results;
}
// Currently, the list is grouped by object type. For example, all the
// tasks might be first, then all the revisions, and so on. In each group,
// the results are ordered properly.
// Reorder the results so that the highest-ranking results come first,
// no matter which object types they belong to.
$metadata = msort($metadata, 'getRelevanceSortVector');
$list = array_select_keys($list, array_keys($metadata)) + $list;
$result_slice = array_slice($list, $offset, $limit, true);
return array_keys($result_slice);
}
public function indexExists() {
return true;
}
public function getIndexStats() {
return false;
}
public function getFulltextTokens() {
return $this->fulltextTokens;
}
}

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