D-Net

    const RESULT_QUERY = '(oaftype exact result)';

    const RESULT_ID = 'objIdentifier';

    const PUBLICATION_QUERY = '(oaftype exact result) and (resulttypeid exact publication)';

    const PUBLICATION_FUNDING_STREAM = 'relfundinglevel0_id';

    const PUBLICATION_SCIENTIFIC_AREA = 'relfundinglevel1_id';

    const PUBLICATION_FUNDING_STREAM_LEVEL2 = 'relfundinglevel2_id';

    const PUBLICATION_YEAR = 'resultacceptanceyear';

    const PUBLICATION_ACCESS_MODE = 'resultbestlicense';

    const PUBLICATION_AUTHOR_ID = 'relpersonid';

    const PUBLICATION_ARTICLE = '0001';

    const PUBLICATION_PREPRINT = '0016';

    const PUBLICATION_DATE = 'resultdateofacceptance';

    const PUBLICATION_ID = 'objIdentifier';

    const DATASET_QUERY = '(oaftype exact result) and (resulttypeid exact dataset)';

    const DATASET_FUNDING_STREAM = 'relfundinglevel0_id';

    const DATASET_SCIENTIFIC_AREA = 'relfundinglevel1_id';

    const DATASET_FUNDING_STREAM_LEVEL2 = 'relfundinglevel2_id';

    const DATASET_YEAR = 'resultacceptanceyear';

    const DATASET_ACCESS_MODE = 'resultbestlicense';

    const DATASET_AUTHOR_ID = 'relpersonid';

    const DATASET_ID = 'objIdentifier';

    const PROJECT_QUERY = '(oaftype exact project)';

    const PROJECT = 'project';

    const PROJECT_FUNDING_STREAM = 'fundinglevel0_id';

    const PROJECT_SCIENTIFIC_AREA = 'fundinglevel1_id';

    const PROJECT_FUNDING_STREAM_LEVEL2 = 'fundinglevel2_id';

    const PROJECT_ID = 'objIdentifier';

    const PROJECT_CODE = 'projectcode';

    const PERSON_QUERY = '(oaftype exact person)';

    const PERSON_LAST_NAME = 'personsecondnames';

    const PERSON_FIRST_NAME = 'personfirstname';

    const PERSON_FULL_NAME = 'personfullname';

    const PERSON_ID = 'objIdentifier';

    const ORGANIZATION_QUERY = '(oaftype exact organization)';

    const ORGANIZATION_QUERY_COMPATIBILITY = 'oaftype exact organization and

    const ORGANIZATION_LEGAL_BODY = 'organizationeclegalbody';

    const ORGANIZATION_LEGAL_PERSON = 'organizationeclegalperson';

    const ORGANIZATION_NON_PROFIT = 'organizationecnonprofit';

//    const DATASOURCE_QUERY = '(oaftype exact datasource) and (datasourcecompatibilityid <> "UNKNOWN") and (datasourcecompatibilityid <> "hostedBy")';

    const DATASOURCE_QUERY = '(oaftype exact datasource) and (datasourcecompatibilityid <> "UNKNOWN")';

    const DATASOURCE_QUERY_COMPATIBILITY = '(oaftype exact datasource)';

    const DATASOURCE_LANGUAGE = 'datasourceodlanguages';

    const DATASOURCE_CONTENT = 'datasourceodcontenttypes';

    const DATASOURCE_NAME = 'datasourceofficialname';

    const DATASOURCE_ENGLISH_NAME = 'datasourceenglishname';

    const DATASOURCE_SUBJECT = 'datasourceodsubjects';

    private $http;

    // Construct a new OpenAireModelSearch.

    public function __construct($configuration = array()) {

        parent :: __construct($configuration);

        $parameters = JComponentHelper :: getParams('com_openaire');

    // $fundingStream the ID of the funding stream to use as filter or NULL for no funding stream filtering

    // $scientificArea the ID of the scientific area to use as filter or NULL for no scientific area filtering

    // $startYear the start year to use as filter or NULL for no start year filtering

    // $accessMode the ID of the SC-39 status to use as filter or NULL for no SC-39 status filtering

    // $page the page of results to retrieve

    // $size the size of the page of results to retrieve

    // Perform an advanced search for people using cache if enabled.

    // $keywords the keywords to search for (array)

    // $constraints the constraints to apply to keywords (array - possible values are ALL and ANY)

    // $countries the IDs of the countries to search for

    // $country the ID of the coutnry to use as filter or NULL for no country filtering

    // $page the page of results to retrieve

    // $size the size of the page of results to retrieve

    // $locale the locale to use

    public function advancedSearchOrganizations($keywords, $fields, $constraints, $countries, $types, $country, $type, $page, $size, $locale) {

        if ($this->cache->getCaching()) {

            $cacheId = self :: ADVANCED_SEARCH_ORGANIZATIONS_CACHE_ID . '.' . implode('.', $keywords) . '.' . implode('.', $fields) . '.' . implode('.', $constraints) . '.' . implode('.', $countries) . '.' . implode('.', $types) . $country . '.' . $type . '.' . $page . '.' . $size . '.' . $locale;

            $organizations = $this->_quickSearchOrganizations($keyword, $limit, $locale);

        return $organizations;

    }

    // Retrieve publication statistics.

    // $locale the locale to use

    // $allFunders get all fields for funders

            $time = microtime(TRUE);

            $query = self :: PUBLICATION_QUERY;

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

                throw new Exception('HTTP response code ' . $response->code);

            $xpath = new DOMXPath($document);

            $statistics=null;

            if($allFunders){

                    array('type', 'language', 'funder', 'fundingStream', 'scientificArea', 'fundingStreamLevel2', 'year', 'accessMode', 'datasource', 'community'),

                    array('NO_DOCUMENT_TYPE_STATISTICS_FOUND', 'NO_DOCUMENT_LANGUAGE_STATISTICS_FOUND',

            }else{

                    array('type', 'language', 'funder',  'year', 'accessMode', 'datasource', 'community'),

                    array('NO_DOCUMENT_TYPE_STATISTICS_FOUND', 'NO_DOCUMENT_LANGUAGE_STATISTICS_FOUND',

            JLog :: add('Retrieved publication statistics in ' . (microtime(TRUE) - $time) . ' s (locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $statistics;

        } catch (Exception $e) {

        }

    }

    // Retrieve dataset statistics.

    // $locale the locale to use

    // return statistics (object)

            $time = microtime(TRUE);

            $query = self :: DATASET_QUERY;

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

                throw new Exception('HTTP response code ' . $response->code);

            $xpath = new DOMXPath($document);

            $statistics=null;

            if($allFunders){

            }else{

            JLog :: add('Retrieved dataset statistics in ' . (microtime(TRUE) - $time) . ' s (locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $statistics;

        } catch (Exception $e) {

            $statistics=null;

            $xpath = new DOMXPath($document);

            if( $allFunders){

                    array('funder', 'fundingStream', 'scientificArea', 'startYear', 'endYear', 'sc39'),

                    array(self :: PROJECT_FUNDER, self :: PROJECT_FUNDING_STREAM, self :: PROJECT_SCIENTIFIC_AREA, self :: PROJECT_START_YEAR, self :: PROJECT_END_YEAR, self :: PROJECT_SC39));

            }else{

                    array('funder',   'startYear', 'endYear', 'sc39'),

                    array(self :: PROJECT_FUNDER,  self :: PROJECT_START_YEAR, self :: PROJECT_END_YEAR, self :: PROJECT_SC39));

            }

            JLog :: add('Retrieved project statistics in ' . (microtime(TRUE) - $time) . ' s (locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

    // $locale the locale to use

    // return statistics (object)

    private function _getPeopleStatistics($locale) {

    }

    // Retrieve organization statistics.

    // return a result (object) containing publications and statistics

    private function _searchPublications($keyword, $articles, $books, $theses, $reports, $type, $language, $funder, $fundingStream, $scientificArea, $fundingStreamLevel2, $year, $accessMode, $datasource, $community, $page, $size, $locale, $project,$isRefine) {

        try {

                $pattern1 = '#\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?!["&\'<>])\S)+)\b#';

                $pattern2 = '#\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?!["&\'<>])[[:graph:]])+)\b#';

                if (preg_match($pattern1, $unique_dois[0]) || preg_match($pattern2, $unique_dois[0])) {

                   $result= $this->_searchPublicationsWithDois($unique_dois,$page, $size, $locale,$isRefine);

                    return $result;

            $time = microtime(TRUE);

            $query = self :: PUBLICATION_QUERY;

            $query .= ($keyword == NULL) ? '' : ' and "' . str_replace('"', '\\"', $keyword) . '"';

            $query .= ($language == NULL) ? '' : (' and (' . self :: PUBLICATION_LANGUAGE . ' exact "' . $language . '")');

             if($funder != NULL && (strpos($funder, ',') !== FALSE)){

                $temp='';

                    if(!empty($id)){

                        $temp.='(' . self :: PUBLICATION_FUNDER . ' exact "' . $id . '") and';

                    }

                }

                $query .=  (' and (' . substr($temp, 0, -3). ')');

            }else{

            $query .= ($scientificArea == NULL) ? '' : (' and (' . self :: PUBLICATION_SCIENTIFIC_AREA . ' exact "' . $scientificArea . '")');

            $query .= ($year == NULL) ? '' : (' and (' . self :: PUBLICATION_YEAR . ' exact ' . $year . ')');

            $query .= ($accessMode == NULL) ? '' : (' and (' . self :: PUBLICATION_ACCESS_MODE . ' exact "' . $accessMode . '")');

            $query .= ($community == NULL) ? '' : (' and (' . self :: PUBLICATION_CONTEXT . ' exact "' . $community . '")');

            $query .= ($project == NULL) ? '' : (' and (' . self :: PUBLICATION_PROJECT . ' exact "' . $project . '")');

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            $completeQuery='search?action=search&sTransformer=results_openaire&query=' . urlencode('(' . $query . ')') . '&page=' . $page . '&size=' . $size .  '&locale=' . str_replace('-', '_', $locale);

            if($isRefine){

            }

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

            $result->publications = $this->parsePublications($xpath);

            $result->statistics = $isRefine? $this->createStatisticsForPublications($xpath):NULL;

            $result->statistics = self ::_pruningStatisticsForFunders($result->statistics,$funder, $fundingStream, $scientificArea, $fundingStreamLevel2,'');

            JLog :: add('Simple search retrieved ' . count($result->publications) . ' publications in ' . (microtime(TRUE) - $time) . ' s (keyword: ' . $keyword . ', articles: ' . ($articles ? 'true' : 'false') . ', books: ' . ($books ? 'true' : 'false') . ', theses: ' . ($theses ? 'true' : 'false') . ', reports: ' . ($reports ? 'true' : 'false') . ', type: ' . (($type == NULL) ? 'null' : $type) . ', language: ' . (($language == NULL) ? 'null' : $language) . ', funder: ' . (($funder == NULL) ? 'null' : $funder) . ', funding stream: ' . (($fundingStream == NULL) ? 'null' : $fundingStream) . ', scientific area: ' . (($scientificArea == NULL) ? 'null' : $scientificArea) . ', year: ' . (($year == NULL) ? 'null' : $year) . ', access mode: ' . (($accessMode == NULL) ? 'null' : $accessMode) . ', datasource: ' . (($datasource == NULL) ? 'null' : $datasource) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

        }

    }

 private function _searchPublicationsWithDois($dois, $page, $size, $locale,$isRefine) {

            $time = microtime(TRUE);

            $query = self :: PUBLICATION_QUERY;

            $query .= ' and (';

            if(count($dois)>0){

                $query=substr($query, 0, -2);

            }

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

            $result->totalPublications = $this->parseTotalResults($xpath);

            $result->totalDatasets = 0;

            $result->publications = $this->parsePublications($xpath);

            JLog :: add('Simple search for DOIs retrieved ' . count($result->publications) . ' publications in ' . (microtime(TRUE) - $time) . ' s (query: ' . $query. ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

    // return a result (object) containing datasets and statistics

    private function _searchDatasets($keyword, $type, $language, $funder, $fundingStream, $scientificArea, $fundingStreamLevel2, $year, $accessMode, $datasource, $page, $size, $locale, $isRefine) {

        try {

                $pattern1 = '#\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?!["&\'<>])\S)+)\b#';

                $pattern2 = '#\b(10[.][0-9]{4,}(?:[.][0-9]+)*/(?:(?!["&\'<>])[[:graph:]])+)\b#';

                if (preg_match($pattern1, $unique_dois[0]) || preg_match($pattern2, $unique_dois[0])) {

                   $result= $this->_searchDatasetsWithDois($unique_dois,$page, $size, $locale,$isRefine);

                    return $result;

            $time = microtime(TRUE);

            $query = self :: DATASET_QUERY;

            $query .= ($keyword == NULL) ? '' : ' and "' . str_replace('"', '\\"', $keyword) . '"';

            $query .= ($fundingStreamLevel2 == NULL) ? '' : (' and (' . self :: DATASET_FUNDING_STREAM_LEVEL2 . ' exact "' . $fundingStreamLevel2 . '")');

            $query .= ($year == NULL) ? '' : (' and (' . self :: DATASET_YEAR . ' exact ' . $year . ')');

            $query .= ($accessMode == NULL) ? '' : (' and (' . self :: DATASET_ACCESS_MODE . ' exact "' . $accessMode . '")');

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                    'search?action=search&sTransformer=results_openaire&query=' . urlencode('(' . $query . ')') . '&page=' . $page . '&size=' . $size  . '&locale=' . str_replace('-', '_', $locale);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            $result->datasets = $this->parseDatasets($xpath);

            $result->statistics = $isRefine?$this->createStatisticsForDatasets($xpath):NULL;

            $result->statistics=self ::_pruningStatisticsForFunders($result->statistics,$funder, $fundingStream, $scientificArea, $fundingStreamLevel2,'');

            JLog :: add('Simple search retrieved ' . count($result->datasets) . ' datasets in ' . (microtime(TRUE) - $time) . ' s (keyword: ' . $keyword . ', type: ' . (($type == NULL) ? 'null' : $type) . ', language: ' . (($language == NULL) ? 'null' : $language) . ', funder: ' . (($funder == NULL) ? 'null' : $funder) . ', funding stream: ' . (($fundingStream == NULL) ? 'null' : $fundingStream) . ', scientific area: ' . (($scientificArea == NULL) ? 'null' : $scientificArea) . ', year: ' . (($year == NULL) ? 'null' : $year) . ', access mode: ' . (($accessMode == NULL) ? 'null' : $accessMode) . ', datasource: ' . (($datasource == NULL) ? 'null' : $datasource) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

    }

 private function _searchDatasetsWithDois($dois, $page, $size, $locale,$isRefine) {

            $time = microtime(TRUE);

            $query = self :: DATASET_QUERY;

            $query .= ' and (';

            if(count($dois)>0){

                $query=substr($query, 0, -2);

            }

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

            $result->datasets = $this->parsePublications($xpath);

            $result->statistics = $isRefine?$this->createStatisticsForDatasets($xpath):NULL;

            $result->statistics=self ::_pruningStatisticsForFunders($result->statistics,$funder, $fundingStream, $scientificArea, $fundingStreamLevel2,'');

            JLog :: add('Simple search for DOIs retrieved ' . count($result->datasets) . ' datasets in ' . (microtime(TRUE) - $time) . ' s (query: ' . $query. ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

            $time = microtime(TRUE);

            $query = self :: PERSON_QUERY;

            $query .= ($keyword == NULL) ? '' : ' and "' . str_replace('"', '\\"', $keyword) . '"';

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

            $result = new JObject();

            $result->totalPeople = $this->parseTotalResults($xpath);

            $result->people = $this->parsePeople($xpath);

            JLog :: add('Simple search retrieved ' . count($result->people) . ' people in ' . (microtime(TRUE) - $time) . ' s (keyword: ' . $keyword . ', country: ' . (($country == NULL) ? 'null' : $country) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

            $query = self :: PUBLICATION_QUERY;

            $query .= ($type == NULL) ? '' : (' and (' . self :: PUBLICATION_TYPE . ' exact "' . $type . '")');

            $query .= ($language == NULL) ? '' : (' and (' . self :: PUBLICATION_LANGUAGE . ' exact "' . $language . '")');

                $temp='';

                    if(!empty($id)){

                        $temp.='(' . self :: PUBLICATION_FUNDER . ' exact "' . $id . '") and';

                    }

                }

            }else{

                $query .= ($funder == NULL) ? '' : (' and (' . self :: PUBLICATION_FUNDER . ' exact "' . $funder . '")');

            }

            $query .= ($fundingStreamLevel2 == NULL) ? '' : (' and (' . self :: PUBLICATION_FUNDING_STREAM_LEVEL2 . ' exact "' . $fundingStreamLevel2 . '")');

            $query .= ($year == NULL) ? '' : (' and (' . self :: PUBLICATION_YEAR . ' exact ' . $year . ')');

            $query .= ($accessMode == NULL) ? '' : (' and (' . self :: PUBLICATION_ACCESS_MODE . ' exact "' . $accessMode . '")');

            $query .= ($author == NULL) ? '' : (' and (' . self :: PUBLICATION_AUTHOR_ID . ' exact "' . $author . '")');

            $query .= ($community == NULL) ? '' : (' and (' . self :: PUBLICATION_CONTEXT . ' exact "' . $community . '")');

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                'search?action=search&sTransformer=results_openaire&query=' . urlencode($query) . '&page=' . $page . '&size=' . $size  . '&locale=' . str_replace('-', '_', $locale);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            $result->publications = $this->parsePublications($xpath);

            $result->statistics = $isRefine?$this->createStatisticsForPublications($xpath):NULL;

            $result->statistics=self ::_pruningStatisticsForFunders($result->statistics,$funder, $fundingStream, $scientificArea, $fundingStreamLevel2,'');

            $result->totalDatasets = 0;

            JLog :: add('Browse retrieved ' . count($result->publications) . ' publications in ' . (microtime(TRUE) - $time) . ' s (type: ' . (($type == NULL) ? 'null' : $type) . ', language: ' . (($language == NULL) ? 'null' : $language) . ', funder: ' . (($funder == NULL) ? 'null' : $funder) . ', funding stream: ' . (($fundingStream == NULL) ? 'null' : $fundingStream) . ', scientific area: ' . (($scientificArea == NULL) ? 'null' : $scientificArea) . ', year: ' . (($year == NULL) ? 'null' : $year) . ', access mode: ' . (($accessMode == NULL) ? 'null' : $accessMode) . ', datasource: ' . (($datasource == NULL) ? 'null' : $datasource) . ', community: ' . (($community == NULL) ? 'null' : $community) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ', project: ' . (($project == NULL) ? 'null' : $project) . ', author: ' . (($author == NULL) ? 'null' : $author) . ')', JLog :: INFO, self :: LOG);

            return $result;

            return NULL;

        }

        if($fundingStreamLevel1!=NULL){

           foreach ($statistics["fundingStreamLevel2".$filter]->data as $data){

               if(strpos($data->id,$fundingStreamLevel1)!==FALSE){

                   $newData[$data->id]=$data;

           }

           $statistics["fundingStreamLevel2".$filter]->data=$newData;

         }

        if($fundingStream!=NULL){

           foreach ($statistics["fundingStreamLevel1".$filter]->data as $data){

               if(strpos($data->id,$fundingStream)!==FALSE){

                   $newData[$data->id]=$data;

           }

           $statistics["fundingStreamLevel1".$filter]->data=$newData;

        if($funder!=NULL){

                       }

                   }

               }

           }else{

               foreach ($statistics["fundingStream".$filter]->data as $data){

                        $newData[$data->id]=$data;

                }

           }

           $statistics["fundingStream".$filter]->data=$newData;

        }

        return $statistics;

    }

    //$funder filter for funder

    //$fundingStream filter for funding stream

    //$fundingStreamLevel1 filter for fundingStreamLevel1

             $f[0]=true;

            for($i=1;$i<4;$i++){

                $f[$i]=false;

            if($fundingStreamLevel2 !== null && !empty($fundingStreamLevel2)){

                $f[3]=true;

           }if($fundingStreamLevel1 !== NULL && strlen($fundingStreamLevel1)>0){

               $f[2]=true;

            } if($fundingStream !== NULL && strlen($fundingStream)>0){

                $f[1]=true;

                $f[2]=true;

                if($f[$i]){

                    $returnedFields.=($f[$i])?$field[$i]:'';

                    $none=false;

            }

        }

        private function _getFundingFieldsPerType($type){

                    $field[0]='&fields=' . self :: PROJECT_FUNDER;

                    break;

             }

             return $field;

        }

    public function browsePublicationsRaw($query) {

        try {

            $time = microtime(TRUE);

            if (($response = $this->performGet($query)) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

     public function browseProjectsRaw($query) {

        try {

            $time = microtime(TRUE);

            if (($response = $this->performGet(str_replace(' ', '+', $query))) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

            JLog :: add('Browse projects raw  for query:'.$query.' in ' . (microtime(TRUE) - $time) , JLog :: INFO, self :: LOG);

            return $response;

        } catch (Exception $e) {

            $query .= ($fundingStreamLevel2 == NULL) ? '' : (' and (' . self :: DATASET_FUNDING_STREAM_LEVEL2 . ' exact "' . $fundingStreamLevel2 . '")');

            $query .= ($year == NULL) ? '' : (' and (' . self :: DATASET_YEAR . ' exact ' . $year . ')');

            $query .= ($accessMode == NULL) ? '' : (' and (' . self :: DATASET_ACCESS_MODE . ' exact "' . $accessMode . '")');

            $query .= ($author == NULL) ? '' : (' and (' . self :: DATASET_AUTHOR_ID . ' exact "' . $author . '")');

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                    'search?action=search&sTransformer=results_openaire&query=' . urlencode($query) . '&page=' . $page . '&size=' . $size . '&locale=' . str_replace('-', '_', $locale);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            $result->totalDatasets = $this->parseTotalResults($xpath);

            $result->datasets = $this->parseDatasets($xpath);

            $result->statistics = $isRefine?$this->createStatisticsForDatasets($xpath):NULL;

            JLog :: add('Browse retrieved ' . count($result->datasets) . ' datasets in ' . (microtime(TRUE) - $time) . ' s (type: ' . (($type == NULL) ? 'null' : $type) . ', language: ' . (($language == NULL) ? 'null' : $language) . ', funder: ' . (($funder == NULL) ? 'null' : $funder) . ', funding stream: ' . (($fundingStream == NULL) ? 'null' : $fundingStream) . ', scientific area: ' . (($scientificArea == NULL) ? 'null' : $scientificArea) . ', year: ' . (($year == NULL) ? 'null' : $year) . ', access mode: ' . (($accessMode == NULL) ? 'null' : $accessMode) . ', datasource: ' . (($datasource == NULL) ? 'null' : $datasource) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ', project: ' . (($project == NULL) ? 'null' : $project) . ', author: ' . (($author == NULL) ? 'null' : $author) . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

            $query = self :: PROJECT_QUERY;

            if($funder != NULL && (strpos($funder, ',') !== FALSE)){

                $temp='';

                    if(!empty($id)){

                        $temp.='(' . self :: PROJECT_FUNDER . ' exact "' . $id . '") and';

                    }

                }

                $query .=  (' and (' . substr($temp, 0, -3). ')');

            }else{

        try {

            $time = microtime(TRUE);

            $query = self :: PERSON_QUERY;

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet($completeQuery)) == NULL)

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

            $result = new JObject();

            $result->totalPeople = $this->parseTotalResults($xpath);

            $result->people = $this->parsePeople($xpath);

            JLog :: add('Browse retrieved ' . count($result->people) . ' people in ' . (microtime(TRUE) - $time) . ' s (country: ' . (($country == NULL) ? 'null' : $country) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

                $result->statistics['type']->id = 'type';

                $result->statistics['type']->title = JText :: _('TYPE');

                $result->statistics['type']->error = JText :: _('NO_TYPE_STATISTICS_FOUND');

                $legalBody = $this->parseStatistics($xpath, self :: ORGANIZATION_LEGAL_BODY);

                if (($legalBody != NULL) && array_key_exists('true', $legalBody)) {

                    $result->statistics['type']->data['legalBody'] = new JObject();

            $query .= ($accessModes == NULL) ? '' : (' and (' . implode(' or ', array_map(function ($accessMode) use ($field) {

                                return '(' . $field . ' exact "' . $accessMode . '")';

                            }, $accessModes)) . ')');

            $query .= ($datasources == NULL) ? '' : (' and (' . implode(' or ', array_map(function ($datasource) use ($field) {

                                return '(' . $field . ' exact "' . $datasource . '")';

                            }, $datasources)) . ')');

            //$query .= ($funder == NULL) ? '' : (' and (' . self :: PUBLICATION_FUNDER . ' exact "' . $funder . '")');

              if($funder != NULL && (strpos($funder, ',') !== FALSE)){

                $temp='';

                    if(!empty($id)){

                        $temp.='(' . self :: PUBLICATION_FUNDER . ' exact "' . $id . '") and';

                    }

                }

                $query .=  (' and (' . substr($temp, 0, -3). ')');

            }else{

            $query .= ($fundingStreamLevel2 == NULL) ? '' : (' and (' . self :: PUBLICATION_FUNDING_STREAM_LEVEL2 . ' exact "' . $fundingStreamLevel2 . '")');

            $query .= ($year == NULL) ? '' : (' and (' . self :: PUBLICATION_YEAR . ' exact "' . $year . '")');

            $query .= ($accessMode == NULL) ? '' : (' and (' . self :: PUBLICATION_ACCESS_MODE . ' exact "' . $accessMode . '")');

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

                throw new Exception('HTTP response code ' . $response->code);

            $result->publications = $this->parsePublications($xpath);

            $result->statistics =$this->createStatisticsForPublications($xpath,'Filter');

            $result->statistics=self ::_pruningStatisticsForFunders($result->statistics,$funder, $fundingStream, $scientificArea, $fundingStreamLevel2,"Filter");

            JLog :: add('Advanced search retrieved ' . count($result->publications) . ' publications in ' . (microtime(TRUE) - $time) . ' s (keywords: [' . implode(', ', $keywords) . '], fields: [' . implode(', ', $fields) . '], constraints: [' . implode(', ', $constraints) . '], types: [' . implode(', ', $types) . '], languages: [' . implode(', ', $languages) . '], funders: [' . implode(', ', $funders) . '], funding streams: [' . implode(', ', $fundingStreams) . '], scientific areas: [' . implode(', ', $scientificAreas) . '], date: ' . $date . ', from month: ' . $fromMonth . ', from year: ' . $fromYear . ', to month: ' . $toMonth . ', to year: ' . $toYear . ', access modes: [' . implode(', ', $accessModes) . '], datasources: [' . implode(', ', $datasources) . '], type: ' . (($type == NULL) ? 'null' : $type) . ', language: ' . (($language == NULL) ? 'null' : $language) . ', funder: ' . (($funder == NULL) ? 'null' : $funder) . ', funding stream: ' . (($fundingStream == NULL) ? 'null' : $fundingStream) . ', scientific area: ' . (($scientificArea == NULL) ? 'null' : $scientificArea) . ', year: ' . (($year == NULL) ? 'null' : $year) . ', access mode: ' . (($accessMode == NULL) ? 'null' : $accessMode) . ', datasource: ' . (($datasource == NULL) ? 'null' : $datasource) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

                                    return '(' . (($field == NULL) ? '' : ($field . ' = ')) . '"' . str_replace('"', '\\"', $keyword) . '")';

                                }, $tokens)) . ')');

            }

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

                throw new Exception('no HTTP response');

            if ($response->code != self :: HTTP_OK)

                throw new Exception('HTTP response code ' . $response->code);

            $result = new JObject();

            $result->totalPeople = $this->parseTotalResults($xpath);

            $result->people = $this->parsePeople($xpath);

            JLog :: add('Advanced search retrieved ' . count($result->people) . ' people in ' . (microtime(TRUE) - $time) . ' s (keywords: [' . implode(', ', $keywords) . '], fields: [' . implode(', ', $fields) . '], constraints: [' . implode(', ', $constraints) . '], countries: [' . implode(', ', $countries) . '], country: ' . (($country == NULL) ? 'null' : $country) . ', page: ' . $page . ', size: ' . $size . ', locale: ' . $locale . ')', JLog :: INFO, self :: LOG);

            return $result;

        } catch (Exception $e) {

            $query .= ')';

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet('search?action=search&sTransformer=results_openaire&query=' . urlencode($query) . '&size=10000&locale=' . str_replace('-', '_', $locale))) == NULL)

            if ($response->code != self :: HTTP_OK)

                throw new Exception('HTTP response code ' . $response->code);

            $document = new DOMDocument();

            return NULL;

        }

    }

    // Retrieve datasets by identifier.

    // $ids the datasets identifiers

    // $locale the locale to use

    private function _quickSearchProjects($keyword, $funder, $limit, $locale) {

        try {

            $time = microtime(TRUE);

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet('search?action=search&sTransformer=projects_openaire&query=' . urlencode($query) . '&size=' . $limit . '&locale=' . str_replace('-', '_', $locale))) == NULL)

                throw new Exception('no HTTP response');

    private function _quickSearchOrganizations($keyword, $limit, $locale) {

        try {

            $time = microtime(TRUE);

            JLog :: add('Generated query is \'' . $query . '\'', JLog :: INFO, self :: LOG);

            if (($response = $this->performGet('search?action=search&sTransformer=organizations_openaire&query=' . urlencode($query) . '&size=' . $limit . '&locale=' . str_replace('-', '_', $locale))) == NULL)

                throw new Exception('no HTTP response');

            $statistic->name = trim($nameNode->nodeValue);

             $statistic->name=  str_replace("::", JText :: _('FUNDER_SEPARATOR'), $statistic->name);

              $project =OpenAireModelSearch :: getProject($statistic->name, 'en-GB');

              if($project!==null){

              $statistic->name =  $project->title;

             foreach($idNodes as $idNode){

                 if (in_array(trim($idNode->nodeValue), $ids)) {

                     $publication->id =trim($idNode->nodeValue);

            }

            $publication->source = 'openaire';

            $publication->url = NULL;

    // Parse publications from a search service XML response.

    // xpath the DOMXPath to parse

    // return publications (array)

        if (($resultNodes = $xpath->query('/response/results/result')) == FALSE)

            throw new Exception('error parsing publications');

        $publications = array();

            if (($pidNodes = $xpath->query('./field[@name = "pid"]', $resultNode)) == FALSE)

                throw new Exception('error parsing publication');

            if (($accessModeNodes = $xpath->query('./field[@name = "bestlicense"]/@value', $resultNode)) == FALSE)

            $publication = new JObject();

            $publication->id = (($idNode = $idNodes->item(0)) == NULL) ? NULL : trim($idNode->nodeValue);

            $publication->source = 'openaire';

                if (($source = trim($sourceNode->nodeValue)) != NULL){

                     $publication->source_source = $source;

                }

            $publication->url = NULL;

            $publication->accessMode =(($accessModeNode = $accessModeNodes->item(0)) == NULL) ? NULL : trim($accessModeNode->nodeValue);

            $publication->datasources = array();

            $publication->language = (($languageNode = $languageNodes->item(0)) == NULL) ? NULL : trim($languageNode->nodeValue);

            $publication->projects = array();

            $publication->subjects = array();

            $publication->embargoEndDate = (($embargoEndDateNode = $embargoEndDateNodes->item(0)) == NULL) ? NULL : strtotime(trim($embargoEndDateNode->nodeValue));

            $publication->description = (($descriptionNode = $descriptionNodes->item(0)) == NULL) ? NULL : trim($descriptionNode->nodeValue);

            $publication->pids = array();

                $project->acronym = (($acronymNode = $acronymNodes->item(0)) == NULL) ? NULL : ((trim($acronymNode->nodeValue) == self :: UNKNOWN) ? NULL : trim($acronymNode->nodeValue));

                $project->title = (($titleNode = $titleNodes->item(0)) == NULL) ? NULL : trim($titleNode->nodeValue);

                $project->code = (($codeNode = $codeNodes->item(0)) == NULL) ? NULL : trim($codeNode->nodeValue);

                if (($fundingNode = $fundingNodes->item(0)) == NULL)

                    ;

                else {

                    if (($funderNodes = $xpath->query('./field[@name = "funder"]/@value', $fundingNode)) == FALSE)

                    $project -> funder = (($funderNode = $funderNodes->item(0)) == NULL) ? NULL : trim($funderNode->nodeValue);

                    if (($funderShortNameNodes = $xpath->query('./field[@name = "fundershortname"]/@value', $fundingNode)) == FALSE)

                    $project -> funderShortName = (($funderShortNameNode = $funderShortNameNodes->item(0)) == NULL) ? NULL : trim($funderShortNameNode->nodeValue);

                }

                if (($project->id != NULL) || ($project->acronym != NULL) || ($project->title != NULL) || ($project->code != NULL))

                $project->code = (($codeNode = $codeNodes->item(0)) == NULL) ? NULL : trim($codeNode->nodeValue);

                if (($project->id != NULL) || ($project->acronym != NULL) || ($project->title != NULL) || ($project->code != NULL))

                    $dataset->projects[] = $project;

                if (($fundingNode = $fundingNodes->item(0)) == NULL)

                    ;

                else {

                    if (($funderNodes = $xpath->query('./field[@name = "funder"]/@value', $fundingNode)) == FALSE)

                    $project -> funder = (($funderNode = $funderNodes->item(0)) == NULL) ? NULL : trim($funderNode->nodeValue);

                    if (($funderShortNameNodes = $xpath->query('./field[@name = "fundershortname"]/@value', $fundingNode)) == FALSE)

                    $project -> funderShortName = (($funderShortNameNode = $funderShortNameNodes->item(0)) == NULL) ? NULL : trim($funderShortNameNode->nodeValue);

                }

            }

                throw new Exception('error parsing projects');

            if (($sc39Nodes = $xpath->query('./field[@name = "ec_sc39"]/@value', $resultNode)) == FALSE)

                throw new Exception('error parsing projects');

                throw new Exception('error parsing projects');

            if (($startYearNodes = $xpath->query('./field[@name = "startyear"]/@value', $resultNode)) == FALSE)

                throw new Exception('error parsing projects');

        foreach ($resultNodes as $resultNode) {

            if (($idNodes = $xpath->query('./field[@name = "datasourceId"]/@value', $resultNode)) == FALSE)

                throw new Exception('error parsing datasources');

                throw new Exception('error parsing datasources');

            if (($typeIdNodes = $xpath->query('./field[@name = "datasourcetypeuiid"]/@value_original', $resultNode)) == FALSE)

                throw new Exception('error parsing datasources');

        $publication->relatedPublications = array();

        $publication->relatedDatasets = array();

        $publication->externalPublications = array();

        $publication->externalDatasets = array();

        $publication->contexts = array();

        $publication->citations = array();

        }

         foreach ($sourceNodes as $sourceNode) {

            if (($source = trim($sourceNode->nodeValue)) != NULL)

        }

        foreach ($projectNodes as $projectNode) {

            if (($idNodes = $xpath->query('./field[@name = "projectId"]/@value', $projectNode)) == FALSE)

                    throw new Exception('error parsing project');

                if (($funding2Nodes = $xpath->query('./field[@name = "funding_level_2"]', $fundingNode)) == FALSE)

                    throw new Exception('error parsing project');

                $project->funding->funder = (($funderNode = $funderNodes->item(0)) == NULL) ? NULL : trim($funderNode->nodeValue);

                $project->funding->funderShortName = (($funderShortNameNode = $funderShortNameNodes->item(0)) == NULL) ? NULL : trim($funderShortNameNode->nodeValue);

                if (($funding0Node = $funding0Nodes->item(0)) == NULL)

                    ;

                else {

                $publication->pids[] = $pid;

        }

        foreach ($similarNodes as $similarNode) {

                throw new Exception('error parsing publication');

            if (($typeNameNodes = $xpath->query('./field[@name = "resulttypename"]/@value', $similarNode)) == FALSE)

                throw new Exception('error parsing publication');

            }

        }

        foreach ($relatedNodes as $relatedNode) {

                throw new Exception('error parsing publication');

            if (($idNodes = $xpath->query('./field[@name = "resultid"]/@value', $relatedNode)) == FALSE)

                throw new Exception('error parsing publication');

                    $externalEntity-> id = (($idNode = $idNodes->item(0)) == NULL) ? NULL : trim($idNode->nodeValue);

                    $externalEntity-> url = (($urlNode = $urlNodes->item(0)) == NULL) ? NULL : trim($urlNode->nodeValue);

                    $externalEntity-> title = (($labelNode = $labelNodes->item(0)) == NULL) ? NULL : trim($labelNode->nodeValue);

                     if (!isset($publication->bioentities[$externalEntity->sitename])){

                        $publication->bioentities[$externalEntity->sitename]=$bioentities;

                     }

                     $publication->bioentities[$externalEntity->sitename] []= $externalEntity;

           /* switch ((($typeNode = $typeNodes->item(0)) == NULL) ? NULL : trim($typeNode->nodeValue)) {

                case self :: PUBLICATION:

                    $externalPublication = new JObject();

        foreach ($datasourceNodes as $datasourceNode) {

            if (($idNodes = $xpath->query('./field[@name = "hostedby"]/@value_original', $datasourceNode)) == FALSE)

                throw new Exception('error parsing dataset');

                throw new Exception('error parsing dataset');

            if (($urlNodes = $xpath->query('./field[@name = "url"]/@value', $datasourceNode)) == FALSE)

                throw new Exception('error parsing dataset');

            if (($idNodes = $xpath->query('./field[@name = "collectedfromid"]/@value', $collectedFromNode)) == FALSE)

                throw new Exception('error parsing dataset');

            if (($nameNodes = $xpath->query('./field[@name = "collectedfromname"]/@value', $collectedFromNode)) == FALSE)

            $collectedFrom = new JObject();

            $collectedFrom->id = (($idNode = $idNodes->item(0)) == NULL) ? NULL : trim($idNode->nodeValue);

            $collectedFrom->name = (($nameNode = $nameNodes->item(0)) == NULL) ? NULL : trim($nameNode->nodeValue);

                    throw new Exception('error parsing project');

                $project->funding->funder = (($funderNode = $funderNodes->item(0)) == NULL) ? NULL : trim($funderNode->nodeValue);

                $project->funding->funderShortName = (($funderShortNameNode = $funderShortNameNodes->item(0)) == NULL) ? NULL : trim($funderShortNameNode->nodeValue);

                if (($funding0Node = $funding0Nodes->item(0)) == NULL)

                    ;

                else {

                $dataset->pids[] = $pid;

        }

        foreach ($relatedNodes as $relatedNode) {

                throw new Exception('error parsing publication');

            if (($idNodes = $xpath->query('./field[@name = "resultid"]/@value', $relatedNode)) == FALSE)

                throw new Exception('error parsing publication');

                if($funder!=null){

                    $organization->allFunders [$funder->id]=$funder;

                    $project->funders [$funder->id]=$funder;

                }

            }

           $project->funders=array_unique($project->funders);

            if (($project->id != NULL) || ($project->acronym != NULL) || ($project->title != NULL) || ($project->code != NULL)){

            throw new Exception('error parsing datasource');

        if (($logoNodes = $xpath->query('./field[@name = "logourl"]/@value', $resultNode)) == FALSE)

            throw new Exception('error parsing datasource');

            throw new Exception('error pasrsing datasource');

        if (($itemsNodes = $xpath->query('./field[@name = "odnumberofitems"]/@value', $resultNode)) == FALSE)

            throw new Exception('error parsing datasource');

        $datasource->compatibility = (($compatibilityNode = $compatibilityNodes->item(0)) == NULL) ? NULL : trim($compatibilityNode->nodeValue);

        $datasource->oaiPmh = (($oaiPmhNode = $oaiPmhNodes->item(0)) == NULL) ? NULL : trim($oaiPmhNode->nodeValue);

        $datasource->description = (($descriptionNode = $descriptionNodes->item(0)) == NULL) ? NULL : trim($descriptionNode->nodeValue);

        return $datasource;

    }

    }

                array( 'NO_FUNDER_STATISTICS_FOUND', 'NO_FUNDING_STREAM_STATISTICS_FOUND', 'NO_SCIENTIFIC_AREA_STATISTICS_FOUND', 'NO_FUNDING_STREAM_LEVEL2_STATISTICS_FOUND', 'NO_YEAR_STATISTICS_FOUND', 'NO_ACCESS_MODE_STATISTICS_FOUND','NO_TYPE_STATISTICS_FOUND', 'NO_LANGUAGE_STATISTICS_FOUND', 'NO_STATISTICS_FOUND'),

                array(self :: PROJECT_FUNDER, self :: PROJECT_FUNDING_STREAM, self :: PROJECT_SCIENTIFIC_AREA, self::PROJECT_FUNDING_STREAM_LEVEL2, self :: PROJECT_START_YEAR, self :: PROJECT_END_YEAR, self :: PROJECT_SC39));

    private function _validateResultsSize($size=10){

        if($size > 50){

            $size = 10;

        }

        return $size;

    }

}