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<?php |
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namespace SEQL\ByAskApiHttpRequest; |
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use Onoi\HttpRequest\HttpRequestFactory; |
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use SEQL\QueryEncoder; |
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use SEQL\QueryResultFactory; |
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use SMWQuery as Query; |
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/** |
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* @license GNU GPL v2+ |
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* @since 1.0 |
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* |
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* @author mwjames |
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*/ |
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class QueryResultFetcher { |
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/** |
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* @var HttpRequestFactory |
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*/ |
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private $httpRequestFactory; |
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/** |
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* @var QueryResultFactory |
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*/ |
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private $queryResultFactory; |
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/** |
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* @var JsonResponseParser |
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*/ |
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private $jsonResponseParser; |
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/** |
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* @var string |
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*/ |
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private $httpRequestEndpoint = ''; |
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/** |
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* @var string |
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*/ |
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private $repositoryTargetUrl = ''; |
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/** |
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* @var string |
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*/ |
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private $httpResponseCachePrefix; |
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/** |
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* @var integer |
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*/ |
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private $httpResponseCacheLifetime; |
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/** |
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* @since 1.0 |
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* |
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* @param HttpRequestFactory $httpRequestFactory |
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* @param QueryResultFactory $queryResultFactory |
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* @param JsonResponseParser $jsonResponseParser |
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*/ |
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public function __construct( HttpRequestFactory $httpRequestFactory, QueryResultFactory $queryResultFactory, JsonResponseParser $jsonResponseParser ) { |
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$this->httpRequestFactory = $httpRequestFactory; |
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$this->queryResultFactory = $queryResultFactory; |
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$this->jsonResponseParser = $jsonResponseParser; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param string $httpRequestEndpoint |
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*/ |
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public function setHttpRequestEndpoint( $httpRequestEndpoint ) { |
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$this->httpRequestEndpoint = $httpRequestEndpoint; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param string $repositoryTargetUrl |
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*/ |
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public function setRepositoryTargetUrl( $repositoryTargetUrl ) { |
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$this->repositoryTargetUrl = $repositoryTargetUrl; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param string $httpResponseCachePrefix |
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*/ |
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public function setHttpResponseCachePrefix( $httpResponseCachePrefix ) { |
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$this->httpResponseCachePrefix = $httpResponseCachePrefix; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param integer $httpResponseCacheLifetime |
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*/ |
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public function setHttpResponseCacheLifetime( $httpResponseCacheLifetime ) { |
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$this->httpResponseCacheLifetime = $httpResponseCacheLifetime; |
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} |
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/** |
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* @since 1.0 |
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* |
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* @param Query $query |
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* |
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* @return QueryResult |
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*/ |
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public function fetchQueryResult( Query $query ) { |
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$this->doResetPrintRequestsToQuerySource( $query ); |
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$result = $this->doMakeHttpRequestFor( $query ); |
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if ( $result === array() || $result === false || $result === null ) { |
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return $this->queryResultFactory->newEmptyQueryResult( $query ); |
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} |
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if ( isset( $result['error'] ) ) { |
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$query->addErrors( isset( $result['error']['info'] ) ? array( $result['error']['info'] ) : $result['error']['query'] ); |
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return $this->queryResultFactory->newEmptyQueryResult( $query ); |
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} |
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$this->jsonResponseParser->doParse( $result ); |
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$queryResult = $this->queryResultFactory->newByAskApiHttpRequestQueryResult( |
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$query, |
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$this->jsonResponseParser |
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); |
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$queryResult->setRemoteTargetUrl( |
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str_replace( '$1', '', $this->repositoryTargetUrl ) |
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); |
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return $queryResult; |
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} |
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private function doResetPrintRequestsToQuerySource( $query ) { |
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$querySource = $query->getQuerySource(); |
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foreach ( $query->getExtraPrintouts() as $printRequest ) { |
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if ( $printRequest->getData() === null ) { |
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continue; |
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} |
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$property = $printRequest->getData()->getDataItem(); |
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$property->setInterwiki( $querySource ); |
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$printRequest->getData()->setDataItem( $property ); |
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// Reset label after dataItem was re-added |
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$printRequest->setLabel( $printRequest->getLabel() ); |
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} |
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} |
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private function doMakeHttpRequestFor( $query ) { |
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$httpRequest = $this->httpRequestFactory->newCachedCurlRequest(); |
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$httpRequest->setOption( ONOI_HTTP_REQUEST_RESPONSECACHE_TTL, $this->httpResponseCacheLifetime ); |
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$httpRequest->setOption( ONOI_HTTP_REQUEST_RESPONSECACHE_PREFIX, $this->httpResponseCachePrefix . ':' ); |
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$httpRequest->setOption( CURLOPT_FOLLOWLOCATION, true ); |
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$httpRequest->setOption( CURLOPT_RETURNTRANSFER, true ); |
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$httpRequest->setOption( CURLOPT_FAILONERROR, true ); |
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$httpRequest->setOption( CURLOPT_SSL_VERIFYPEER, false ); |
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$httpRequest->setOption( CURLOPT_URL, $this->httpRequestEndpoint . '?action=ask&format=json&query=' . QueryEncoder::rawUrlEncode( $query ) ); |
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$httpRequest->setOption( CURLOPT_HTTPHEADER, array( |
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'Accept: application/json', |
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'Content-Type: application/json; charset=utf-8' |
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) ); |
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$response = $httpRequest->execute(); |
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return json_decode( $response, true ); |
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} |
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} |
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SemanticMediaWiki /
SemanticExternalQueryLookup
