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<?php |
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namespace SEQL; |
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use Onoi\HttpRequest\HttpRequestFactory; |
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use SEQL\ByHttpRequest\JsonResponseParser; |
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use SEQL\ByHttpRequest\QueryResultFetcher; |
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use SMW\SQLStore\SQLStore; |
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use SMW\ApplicationFactory; |
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use SMWQuery as Query; |
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use SMWQueryResult as QueryResult; |
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use Interwiki; |
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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 ByHttpRequestQueryLookup extends SQLStore { |
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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 CacheFactory |
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*/ |
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private $cacheFactory; |
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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 getQueryResult( Query $query ) { |
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$this->queryResultFactory = new QueryResultFactory( $this ); |
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if ( $query->querymode === Query::MODE_DEBUG ) { |
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$query->addErrors( array( wfMessage( 'seql-debug-query-not-supported' )->text() ) ); |
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return $this->queryResultFactory->newEmptyQueryResult( $query ); |
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} |
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$interwiki = $this->tryToMatchInterwikiFor( $query ); |
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if ( $interwiki === false || $interwiki === null ) { |
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$query->addErrors( array( wfMessage( 'seql-interwiki-prefix-is-missing', $query->getQuerySource() )->text() ) ); |
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return $this->queryResultFactory->newEmptyQueryResult( $query ); |
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} |
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return $this->fetchQueryResultFor( $query, $interwiki ); |
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} |
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protected function tryToMatchInterwikiFor( Query $query ) { |
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return Interwiki::fetch( $query->getQuerySource() ); |
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} |
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protected function fetchQueryResultFor( Query $query, $interwiki ) { |
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$queryResultFetcher = new QueryResultFetcher( |
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new HttpRequestFactory( $this->getCacheFactory()->newMediaWikiCompositeCache( $GLOBALS['seqlgHttpResponseCacheType'] ) ), |
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$this->queryResultFactory, |
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new JsonResponseParser( new DataValueDeserializer( $query->getQuerySource() ) ) |
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); |
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$queryResultFetcher->setHttpRequestEndpoint( $interwiki->getApi() ); |
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$queryResultFetcher->setRepositoryTargetUrl( $interwiki->getUrl() ); |
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$queryResultFetcher->setHttpResponseCachePrefix( $this->getCacheFactory()->getCachePrefix() ); |
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$queryResultFetcher->setHttpResponseCacheLifetime( $GLOBALS['seqlgHttpResponseCacheLifetime'] ); |
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return $queryResultFetcher->fetchQueryResult( $query ); |
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} |
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private function getCacheFactory() { |
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if ( $this->cacheFactory === null ) { |
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$this->cacheFactory = ApplicationFactory::getInstance()->newCacheFactory(); |
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} |
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return $this->cacheFactory; |
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} |
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} |
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SemanticMediaWiki /
SemanticExternalQueryLookup
