/**
* Returns the ids of all documents that contain and impact index entry
* matching the resource and context specified
* @param array $resourcesAndPredicates
* @param string $context
* @return array the ids of search documents that had matching entries in their impact index
*/
public function findImpactedDocuments(array $resourcesAndPredicates, $context)
{
$contextAlias = $this->labeller->uri_to_alias($context);
$specPredicates = array();
foreach ($this->config->getSearchDocumentSpecifications($this->storeName) as $spec) {
if (isset($spec[_ID_KEY])) {
$specPredicates[$spec[_ID_KEY]] = $this->config->getDefinedPredicatesInSpec($this->storeName, $spec[_ID_KEY]);
}
}
// build a filter - will be used for impactIndex detection and finding search types to re-gen
$searchDocFilters = array();
$resourceFilters = array();
foreach ($resourcesAndPredicates as $resource => $resourcePredicates) {
$resourceAlias = $this->labeller->uri_to_alias($resource);
$id = array(_ID_RESOURCE => $resourceAlias, _ID_CONTEXT => $contextAlias);
// If we don't have a working config or there are no predicates listed, remove all
// rows associated with the resource in all search types
if (empty($specPredicates) || empty($resourcePredicates)) {
// build $filter for queries to impact index
$resourceFilters[] = $id;
} else {
foreach ($specPredicates as $searchDocType => $predicates) {
// Only look for search rows if the changed predicates are actually defined in the searchDocspec
if (array_intersect($resourcePredicates, $predicates)) {
if (!isset($searchDocFilters[$searchDocType])) {
$searchDocFilters[$searchDocType] = array();
}
// build $filter for queries to impact index
$searchDocFilters[$searchDocType][] = $id;
}
}
}
}
$searchTypes = array();
if (empty($searchDocFilters) && !empty($resourceFilters)) {
$query = array(_IMPACT_INDEX => array('$in' => $resourceFilters));
} else {
$query = array();
foreach ($searchDocFilters as $searchDocType => $filters) {
// first re-gen views where resources appear in the impact index
$query[] = array(_IMPACT_INDEX => array('$in' => $filters), '_id.' . _ID_TYPE => $searchDocType);
$searchTypes[] = $searchDocType;
}
if (!empty($resourceFilters)) {
$query[] = array(_IMPACT_INDEX => array('$in' => $resourceFilters));
}
if (count($query) === 1) {
$query = $query[0];
} elseif (count($query) > 1) {
$query = array('$or' => $query);
}
}
if (empty($query)) {
return array();
}
$searchDocs = array();
foreach ($this->config->getCollectionsForSearch($this->storeName, $searchTypes) as $collection) {
$cursor = $collection->find($query, array('projection' => array('_id' => true)));
foreach ($cursor as $d) {
$searchDocs[] = $d;
}
}
return $searchDocs;
}