/**
* More like this is pretty similar to normal search, but usually only the object or node id are sent to Solr
* However, streams or a search text body can also be passed .. Solr will extract the important terms and build a
* query for us
*
* @param string $queryType is one of 'noid', 'oid', 'url', 'text'
* @param $queryValue the node id, object id, url or text body to use
* @param array parameters. @see ezfeZPSolrQueryBuilder::buildMoreLikeThis()
*
* @return array List of eZFindResultNode objects.
*
* @todo: add functionality not to call the DB to recreate objects : $asObjects == false
*/
function moreLikeThis( $queryType, $queryValue, $params = array() )
{
eZDebug::createAccumulator( 'MoreLikeThis', 'eZ Find' );
eZDebug::accumulatorStart( 'MoreLikeThis' );
$error = 'Server not running';
$searchCount = 0;
//mlt does not support distributed search yet, so find out which is
//the language core to use and qyery only this one
//search across languages does not make sense here
$coreToUse = null;
if ( $this->UseMultiLanguageCores == true )
{
$languages = $this->SiteINI->variable( 'RegionalSettings', 'SiteLanguageList' );
if ( array_key_exists ( $languages[0], $this->SolrLanguageShards ) )
{
$coreToUse = $this->SolrLanguageShards[$languages[0]];
}
}
else
{
$coreToUse = $this->Solr;
}
if ( trim( $queryType ) == '' || trim( $queryValue ) == '' )
{
$error = 'Missing query arguments for More Like This: ' . 'querytype = ' . $queryType . ', Query Value = ' . $queryValue;
eZDebug::writeNotice( $error, __METHOD__ );
$resultArray = null;
}
else
{
eZDebug::createAccumulator( 'Query build', 'eZ Find' );
eZDebug::accumulatorStart( 'Query build' );
$queryBuilder = new ezfeZPSolrQueryBuilder( $this );
$queryParams = $queryBuilder->buildMoreLikeThis( $queryType, $queryValue, $params );
eZDebug::accumulatorStop( 'Query build' );
eZDebug::createAccumulator( 'Engine time', 'eZ Find' );
eZDebug::accumulatorStart( 'Engine time' );
$resultArray = $coreToUse->rawSolrRequest( '/mlt', $queryParams );
eZDebug::accumulatorStop( 'Engine time' );
}
if ( !$resultArray )
{
eZDebug::accumulatorStop( 'Search' );
return array(
'SearchResult' => false,
'SearchCount' => 0,
'StopWordArray' => array(),
'SearchExtras' => new ezfSearchResultInfo( array( 'error' => ezpI18n::tr( 'ezfind', $error ) ) ) );
}
$objectRes = array();
if ( isset( $resultArray['response'] ) && is_array( $resultArray['response'] ) )
{
$result = $resultArray['response'];
$searchCount = $result['numFound'];
$maxScore = $result['maxScore'];
$docs = $result['docs'];
$localNodeIDList = array();
$nodeRowList = array();
// Loop through result, and get eZContentObjectTreeNode ID
foreach ( $docs as $idx => $doc )
{
if ( $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'installation_id' )] == self::installationID() )
{
$localNodeIDList[] = $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_node_id' )];
}
}
if ( count( $localNodeIDList ) )
{
$tmpNodeRowList = eZContentObjectTreeNode::fetch( $localNodeIDList, false, false );
// Workaround for eZContentObjectTreeNode::fetch behaviour
if ( count( $localNodeIDList ) === 1 )
{
$tmpNodeRowList = array( $tmpNodeRowList );
}
if ( $tmpNodeRowList )
{
foreach ( $tmpNodeRowList as $nodeRow )
{
$nodeRowList[$nodeRow['node_id']] = $nodeRow;
}
}
unset( $tmpNodeRowList );
}
foreach ( $docs as $idx => $doc )
{
if ( $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'installation_id' )] == self::installationID() )
{
// Search result document is from current installation
// var_dump( ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_node_id' ), $doc, $nodeRowList );die();
$resultTree = new eZFindResultNode( $nodeRowList[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_node_id' )]] );
$resultTree->setContentObject( new eZContentObject( $nodeRowList[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_node_id' )]] ) );
$resultTree->setAttribute( 'is_local_installation', true );
// can_read permission must be checked as they could be out of sync in Solr, however, when called from template with:
// limitation, hash( 'accessWord', ... ) this check should not be performed as it has precedence.
// See: http://issues.ez.no/15978
if ( !isset( $params['Limitation'], $params['Limitation']['accessWord'] ) && !$resultTree->attribute( 'object' )->attribute( 'can_read' ) )
{
$searchCount--;
eZDebug::writeNotice( 'Access denied for eZ Find result, node_id: ' . $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_node_id' )], __METHOD__ );
continue;
}
$globalURL = $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_url_alias' )] .
'/(language)/' . $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'language_code' )];
eZURI::transformURI( $globalURL );
}
else
{
$resultTree = new eZFindResultNode();
$resultTree->setAttribute( 'is_local_installation', false );
$globalURL = $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'installation_url' )] .
$doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'main_url_alias' )] .
'/(language)/' . $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'language_code' )];
}
$resultTree->setAttribute( 'name', $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'name' )] );
$resultTree->setAttribute( 'published', $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'published' )] );
$resultTree->setAttribute( 'global_url_alias', $globalURL );
$resultTree->setAttribute( 'highlight', isset( $highLights[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'guid' )]] ) ?
$highLights[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'guid' )]] : null );
$resultTree->setAttribute( 'score_percent', (int) ( ( $doc['score'] / $maxScore ) * 100 ) );
$resultTree->setAttribute( 'language_code', $doc[ezfSolrDocumentFieldBase::generateMetaFieldName( 'language_code' )] );
$objectRes[] = $resultTree;
}
}
$stopWordArray = array();
eZDebug::accumulatorStop( 'Search' );
eZDebug::writeDebug( $resultArray['interestingTerms'], 'MoreLikeThis terms' );
return array(
'SearchResult' => $objectRes,
'SearchCount' => $searchCount,
'StopWordArray' => $stopWordArray,
'SearchExtras' => new ezfSearchResultInfo( $resultArray ) );
}
/**
* Translates a solr response into result objects or a slightly modified array.
* The $asObjects parameter controls which of the 2 return formats get send back.
* @see eZSolrBase::search
* @see eZSolrBase::moreLikeThis
*/
protected function buildResultObjects($resultArray, &$searchCount, $asObjects = true, $fieldsToReturn = array())
{
$objectRes = array();
$highLights = array();
if (!empty($resultArray['highlighting'])) {
foreach ($resultArray['highlighting'] as $id => $highlight) {
$highLightStrings = array();
//implode apparently does not work on associative arrays that contain arrays
//$element being an array as well
foreach ($highlight as $key => $element) {
$highLightStrings[] = implode(' ', $element);
}
$highLights[$id] = implode(' ... ', $highLightStrings);
}
}
if (!empty($resultArray)) {
$result = $resultArray['response'];
$maxScore = $result['maxScore'];
$docs = $result['docs'];
$localNodeIDList = array();
$nodeRowList = array();
// Loop through result, and get eZContentObjectTreeNode ID
foreach ($docs as $idx => $doc) {
if ($doc[ezfSolrDocumentFieldBase::generateMetaFieldName('installation_id')] == self::installationID()) {
$localNodeIDList[] = $this->getNodeID($doc);
}
}
if (!empty($localNodeIDList)) {
$tmpNodeRowList = eZContentObjectTreeNode::fetch($localNodeIDList, false, false);
// Workaround for eZContentObjectTreeNode::fetch behaviour
if (count($localNodeIDList) === 1) {
$tmpNodeRowList = array($tmpNodeRowList);
}
if ($tmpNodeRowList) {
foreach ($tmpNodeRowList as $nodeRow) {
$nodeRowList[$nodeRow['node_id']] = $nodeRow;
}
}
unset($tmpNodeRowList);
}
//need refactoring from the moment Solr has globbing in fl parameter
foreach ($docs as $idx => $doc) {
if (!$asObjects) {
$emit = array();
foreach ($doc as $fieldName => $fieldValue) {
// check if field is not in the explicit field list, to keep explode from generating notices.
if (strpos($fieldName, '_') !== false) {
list($prefix, $rest) = explode('_', $fieldName, 2);
// get the identifier for meta, binary fields
$inner = implode('_', explode('_', $rest, -1));
if ($prefix === 'meta') {
$emit[$inner] = $fieldValue;
} elseif ($prefix === 'as') {
$emit['data_map'][$inner] = ezfSolrStorage::unserializeData($fieldValue);
}
} elseif (in_array($fieldName, $fieldsToReturn)) {
$emit['fields'][$fieldName] = $fieldValue;
}
}
$emit['highlight'] = isset($highLights[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName('guid')]]) ? $highLights[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName('guid')]] : null;
$objectRes[] = $emit;
unset($emit);
continue;
} elseif ($doc[ezfSolrDocumentFieldBase::generateMetaFieldName('installation_id')] == self::installationID()) {
// Search result document is from current installation
$nodeID = $this->getNodeID($doc);
// Invalid $nodeID
// This can happen if a content has been deleted while Solr was not running, provoking desynchronization
if (!isset($nodeRowList[$nodeID])) {
$searchCount--;
eZDebug::writeError("Node #{$nodeID} (/{$doc[ezfSolrDocumentFieldBase::generateMetaFieldName('main_url_alias')]}) returned by Solr cannot be found in the database. Please consider reindexing your content", __METHOD__);
continue;
}
$resultTree = new eZFindResultNode($nodeRowList[$nodeID]);
$node = $nodeRowList[$nodeID];
$resultTree->setContentObject(new eZContentObject(array("id" => $node["id"], "section_id" => $node["section_id"], "owner_id" => $node["owner_id"], "contentclass_id" => $node["contentclass_id"], "name" => $node["name"], "published" => $node["published"], "modified" => $node["modified"], "current_version" => $node["current_version"], "status" => $node["status"], "remote_id" => $node["object_remote_id"], "language_mask" => $node["language_mask"], "initial_language_id" => $node["initial_language_id"], "class_identifier" => $node["class_identifier"], "serialized_name_list" => $node["class_serialized_name_list"])));
$resultTree->setAttribute('is_local_installation', true);
// can_read permission must be checked as they could be out of sync in Solr, however, when called from template with:
// limitation, hash( 'accessWord', ... ) this check should not be performed as it has precedence.
// See: http://issues.ez.no/15978
if (!isset($params['Limitation'], $params['Limitation']['accessWord']) && !$resultTree->attribute('object')->attribute('can_read')) {
$searchCount--;
eZDebug::writeNotice('Access denied for eZ Find result, node_id: ' . $nodeID, __METHOD__);
continue;
}
$urlAlias = $this->getUrlAlias($doc);
$globalURL = $urlAlias . '/(language)/' . $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('language_code')];
eZURI::transformURI($globalURL);
} else {
$resultTree = new eZFindResultNode();
$resultTree->setAttribute('is_local_installation', false);
$globalURL = $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('installation_url')] . $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('main_url_alias')] . '/(language)/' . $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('language_code')];
}
$resultTree->setAttribute('name', $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('name')]);
$resultTree->setAttribute('published', $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('published')]);
$resultTree->setAttribute('global_url_alias', $globalURL);
$resultTree->setAttribute('highlight', isset($highLights[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName('guid')]]) ? $highLights[$doc[ezfSolrDocumentFieldBase::generateMetaFieldName('guid')]] : null);
/**
* $maxScore may be equal to 0 when the QueryElevationComponent is used.
* It returns as first results the elevated documents, with a score equal to 0. In case no
* other document than the elevated ones are returned, maxScore is then 0 and the
* division below raises a warning. If maxScore is equal to zero, we can safely assume
* that only elevated documents were returned. The latter have an articifial relevancy of 100%,
* which must be reflected in the 'score_percent' attribute of the result node.
*/
$maxScore != 0 ? $resultTree->setAttribute('score_percent', (int) ($doc['score'] / $maxScore * 100)) : $resultTree->setAttribute('score_percent', 100);
$resultTree->setAttribute('language_code', $doc[ezfSolrDocumentFieldBase::generateMetaFieldName('language_code')]);
$objectRes[] = $resultTree;
}
}
return $objectRes;
}
