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<?php |
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namespace ApacheSolrForTypo3\Solr\Domain\Search\Suggest; |
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/*************************************************************** |
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* Copyright notice |
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* |
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* (c) 2017 Franz Saris <[email protected]> |
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* All rights reserved |
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* |
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* This script is part of the TYPO3 project. The TYPO3 project is |
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* free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* The GNU General Public License can be found at |
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* http://www.gnu.org/copyleft/gpl.html. |
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* |
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* This script is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* This copyright notice MUST APPEAR in all copies of the script! |
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***************************************************************/ |
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use ApacheSolrForTypo3\Solr\ConnectionManager; |
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use ApacheSolrForTypo3\Solr\Domain\Search\Query\QueryBuilder; |
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use ApacheSolrForTypo3\Solr\Domain\Search\Query\SuggestQuery; |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Result\SearchResult; |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\Result\SearchResultCollection; |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\SearchResultSet; |
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use ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\SearchResultSetService; |
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use ApacheSolrForTypo3\Solr\Domain\Search\SearchRequest; |
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use ApacheSolrForTypo3\Solr\Search; |
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use ApacheSolrForTypo3\Solr\System\Configuration\TypoScriptConfiguration; |
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use ApacheSolrForTypo3\Solr\System\Solr\ParsingUtil; |
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use ApacheSolrForTypo3\Solr\Util; |
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use TYPO3\CMS\Core\Utility\GeneralUtility; |
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use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController; |
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/** |
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* Class SuggestService |
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* |
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* @author Frans Saris <[email protected]> |
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* @author Timo Hund <[email protected]> |
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*/ |
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class SuggestService { |
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/** |
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* @var TypoScriptFrontendController |
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*/ |
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protected $tsfe; |
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/** |
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* @var SearchResultSetService |
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*/ |
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protected $searchService; |
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/** |
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* @var TypoScriptConfiguration |
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*/ |
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protected $typoScriptConfiguration; |
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/** |
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* @var QueryBuilder |
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*/ |
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protected $queryBuilder; |
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/** |
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* SuggestService constructor. |
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* @param TypoScriptFrontendController $tsfe |
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* @param SearchResultSetService $searchResultSetService |
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* @param QueryBuilder|null $queryBuilder |
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*/ |
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public function __construct(TypoScriptFrontendController $tsfe, SearchResultSetService $searchResultSetService, TypoScriptConfiguration $typoScriptConfiguration, QueryBuilder $queryBuilder = null) |
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{ |
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$this->tsfe = $tsfe; |
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$this->searchService = $searchResultSetService; |
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$this->typoScriptConfiguration = $typoScriptConfiguration; |
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$this->queryBuilder = $queryBuilder ?? GeneralUtility::makeInstance(QueryBuilder::class, /** @scrutinizer ignore-type */ $typoScriptConfiguration); |
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} |
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/** |
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* Build an array structure of the suggestions. |
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* |
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* @param SearchRequest $searchRequest |
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* @param array $additionalFilters |
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* @return array |
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*/ |
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public function getSuggestions(SearchRequest $searchRequest, array $additionalFilters = []) : array |
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{ |
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$requestId = (int)$this->tsfe->getRequestedId(); |
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$groupList = Util::getFrontendUserGroupsList(); |
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$suggestQuery = $this->queryBuilder->buildSuggestQuery($searchRequest->getRawUserQuery(), $additionalFilters, $requestId, $groupList); |
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$solrSuggestions = $this->getSolrSuggestions($suggestQuery); |
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if ($solrSuggestions === []) { |
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return ['status' => false]; |
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} |
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$maxSuggestions = $this->typoScriptConfiguration->getSuggestNumberOfSuggestions(); |
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$showTopResults = $this->typoScriptConfiguration->getSuggestShowTopResults(); |
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$suggestions = $this->getSuggestionArray($suggestQuery, $solrSuggestions, $maxSuggestions); |
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if (!$showTopResults) { |
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return $this->getResultArray($searchRequest, $suggestions, [], false); |
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} |
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return $this->addTopResultsToSuggestions($searchRequest, $suggestions, $additionalFilters); |
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} |
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/** |
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* Determines the top results and adds them to the suggestions. |
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* |
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* @param SearchRequest $searchRequest |
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* @param array $suggestions |
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* @param array $additionalFilters |
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* @return array |
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*/ |
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protected function addTopResultsToSuggestions(SearchRequest $searchRequest, $suggestions, array $additionalFilters) : array |
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{ |
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$maxDocuments = $this->typoScriptConfiguration->getSuggestNumberOfTopResults(); |
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// perform the current search. |
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$searchRequest->setResultsPerPage($maxDocuments); |
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$searchRequest->setAdditionalFilters($additionalFilters); |
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$didASecondSearch = false; |
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$documents = []; |
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$searchResultSet = $this->doASearch($searchRequest); |
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$results = $searchResultSet->getSearchResults(); |
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if (count($results) > 0) { |
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$documents = $this->addDocumentsWhenLimitNotReached($documents, $results, $maxDocuments); |
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} |
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$suggestionKeys = array_keys($suggestions); |
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$bestSuggestion = reset($suggestionKeys); |
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$bestSuggestionRequest = $searchRequest->getCopyForSubRequest(); |
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$bestSuggestionRequest->setRawQueryString($bestSuggestion); |
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$bestSuggestionRequest->setResultsPerPage($maxDocuments); |
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$bestSuggestionRequest->setAdditionalFilters($additionalFilters); |
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// No results found, use first proposed suggestion to perform the search |
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if (count($documents) === 0 && !empty($suggestions) && ($searchResultSet = $this->doASearch($bestSuggestionRequest)) && count($searchResultSet->getSearchResults()) > 0) { |
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$didASecondSearch = true; |
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$documentsToAdd = $searchResultSet->getSearchResults(); |
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$documents = $this->addDocumentsWhenLimitNotReached($documents, $documentsToAdd, $maxDocuments); |
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} |
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return $this->getResultArray($searchRequest, $suggestions, $documents, $didASecondSearch); |
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} |
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/** |
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* Retrieves the suggestions from the solr server. |
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* |
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* @param SuggestQuery $suggestQuery |
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* @return array |
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*/ |
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protected function getSolrSuggestions(SuggestQuery $suggestQuery) : array |
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{ |
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$pageId = $this->tsfe->getRequestedId(); |
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$languageId = Util::getLanguageUid(); |
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$solr = GeneralUtility::makeInstance(ConnectionManager::class)->getConnectionByPageId($pageId, $languageId); |
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$search = GeneralUtility::makeInstance(Search::class, /** @scrutinizer ignore-type */ $solr); |
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$response = $search->search($suggestQuery, 0, 0); |
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$rawResponse = $response->getRawResponse(); |
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$results = json_decode($rawResponse); |
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$suggestConfig = $this->typoScriptConfiguration->getObjectByPath('plugin.tx_solr.suggest.'); |
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$facetSuggestions = $results->facet_counts->facet_fields->{$suggestConfig['suggestField']}; |
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$facetSuggestions = ParsingUtil::getMapArrayFromFlatArray($facetSuggestions); |
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return $facetSuggestions ?? []; |
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} |
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/** |
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* Extracts the suggestions from solr as array. |
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* |
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* @param SuggestQuery $suggestQuery |
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* @param array $solrSuggestions |
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* @param integer $maxSuggestions |
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* @return array |
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*/ |
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protected function getSuggestionArray(SuggestQuery $suggestQuery, $solrSuggestions, $maxSuggestions) : array |
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{ |
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$queryString = $suggestQuery->getQuery(); |
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$suggestionCount = 0; |
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$suggestions = []; |
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foreach ($solrSuggestions as $string => $count) { |
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$suggestion = trim($queryString . ' ' . $string); |
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$suggestions[$suggestion] = $count; |
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$suggestionCount++; |
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if ($suggestionCount === $maxSuggestions) { |
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return $suggestions; |
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} |
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} |
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return $suggestions; |
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} |
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/** |
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* Adds documents from a collection to the result collection as soon as the limit is not reached. |
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* |
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* @param array $documents |
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* @param SearchResultCollection $documentsToAdd |
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* @param integer $maxDocuments |
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* @return array |
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*/ |
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protected function addDocumentsWhenLimitNotReached(array $documents, SearchResultCollection $documentsToAdd, int $maxDocuments) : array |
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{ |
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$additionalTopResultsFields = $this->typoScriptConfiguration->getSuggestAdditionalTopResultsFields(); |
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/** @var SearchResult $document */ |
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foreach ($documentsToAdd as $document) { |
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$documents[] = $this->getDocumentAsArray($document, $additionalTopResultsFields); |
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if (count($documents) >= $maxDocuments) { |
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return $documents; |
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} |
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} |
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return $documents; |
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} |
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/** |
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* Creates an array representation of the result and returns it. |
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* |
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* @param SearchResult $document |
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* @param array $additionalTopResultsFields |
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* @return array |
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*/ |
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protected function getDocumentAsArray(SearchResult $document, $additionalTopResultsFields = []) : array |
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{ |
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$fields = [ |
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'link' => $document->getUrl(), |
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'type' => $document['type_stringS'] ? $document['type_stringS'] : $document->getType(), |
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'title' => $document->getTitle(), |
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'content' => $document->getContent(), |
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'group' => $document->getHasGroupItem() ? $document->getGroupItem()->getGroupValue() : '', |
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'previewImage' => $document['image'] ? $document['image'] : '', |
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]; |
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foreach ($additionalTopResultsFields as $additionalTopResultsField) { |
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$fields[$additionalTopResultsField] = $document[$additionalTopResultsField] ? $document[$additionalTopResultsField] : ''; |
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} |
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return $fields; |
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} |
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/** |
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* Runs a search and returns the results. |
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* |
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* @param SearchRequest $searchRequest |
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* @return \ApacheSolrForTypo3\Solr\Domain\Search\ResultSet\SearchResultSet |
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*/ |
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protected function doASearch($searchRequest) : SearchResultSet |
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{ |
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return $this->searchService->search($searchRequest); |
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} |
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/** |
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* Creates an result array with the required fields. |
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* |
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* @param SearchRequest $searchRequest |
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* @param array $suggestions |
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* @param array $documents |
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* @param boolean $didASecondSearch |
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* @return array |
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*/ |
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protected function getResultArray(SearchRequest $searchRequest, $suggestions, $documents, $didASecondSearch) : array |
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{ |
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return ['suggestions' => $suggestions, 'suggestion' => $searchRequest->getRawUserQuery(), 'documents' => $documents, 'didSecondSearch' => $didASecondSearch]; |
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} |
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} |
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