SemanticMediaWiki /
SemanticExternalQueryLookup
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| 1 | <?php |
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| 2 | |||
| 3 | namespace SEQL; |
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| 4 | |||
| 5 | use Onoi\HttpRequest\HttpRequestFactory; |
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| 6 | use SEQL\ByHttpRequest\JsonResponseParser; |
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| 7 | use SEQL\ByHttpRequest\QueryResultFetcher; |
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| 8 | use SMW\SQLStore\SQLStore; |
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| 9 | use SMW\ApplicationFactory; |
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| 10 | use SMWQuery as Query; |
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| 11 | use SMWQueryResult as QueryResult; |
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| 12 | use Interwiki; |
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| 13 | |||
| 14 | /** |
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| 15 | * @license GNU GPL v2+ |
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| 16 | * @since 1.0 |
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| 17 | * |
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| 18 | * @author mwjames |
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| 19 | */ |
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| 20 | class ByHttpRequestQueryLookup extends SQLStore { |
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| 21 | |||
| 22 | /** |
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| 23 | * @var QueryResultFactory |
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| 24 | */ |
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| 25 | private $queryResultFactory; |
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| 26 | |||
| 27 | /** |
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| 28 | * @var CacheFactory |
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| 29 | */ |
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| 30 | private $cacheFactory; |
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| 31 | |||
| 32 | /** |
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| 33 | * @since 1.0 |
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| 34 | * |
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| 35 | * @param Query $query |
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| 36 | * |
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| 37 | * @return QueryResult |
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| 38 | */ |
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| 39 | 3 | public function getQueryResult( Query $query ) { |
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| 40 | |||
| 41 | 3 | $this->queryResultFactory = new QueryResultFactory( $this ); |
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| 42 | |||
| 43 | 3 | if ( $query->querymode === Query::MODE_DEBUG ) { |
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| 44 | 1 | $query->addErrors( array( wfMessage( 'seql-debug-query-not-supported' )->text() ) ); |
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| 45 | 1 | return $this->queryResultFactory->newEmptyQueryResult( $query ); |
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| 46 | } |
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| 47 | |||
| 48 | 2 | $interwiki = $this->tryToMatchInterwikiFor( $query ); |
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| 49 | |||
| 50 | 2 | if ( $interwiki === false || $interwiki === null ) { |
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| 51 | 1 | $query->addErrors( array( wfMessage( 'seql-interwiki-prefix-is-missing', $query->getQuerySource() )->text() ) ); |
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| 52 | 1 | return $this->queryResultFactory->newEmptyQueryResult( $query ); |
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| 53 | } |
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| 54 | |||
| 55 | 1 | return $this->fetchQueryResultFor( $query, $interwiki ); |
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| 56 | } |
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| 57 | |||
| 58 | 1 | protected function tryToMatchInterwikiFor( Query $query ) { |
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| 59 | 1 | return Interwiki::fetch( $query->getQuerySource() ); |
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| 60 | } |
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| 61 | |||
| 62 | 1 | protected function fetchQueryResultFor( Query $query, $interwiki ) { |
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| 63 | |||
| 64 | 1 | $queryResultFetcher = new QueryResultFetcher( |
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| 65 | 1 | new HttpRequestFactory( $this->getCacheFactory()->newMediaWikiCompositeCache( $GLOBALS['seqlgHttpResponseCacheType'] ) ), |
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| 66 | 1 | $this->queryResultFactory, |
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| 67 | 1 | new JsonResponseParser( new DataValueDeserializer( $query->getQuerySource() ) ) |
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| 68 | 1 | ); |
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| 69 | |||
| 70 | 1 | $queryResultFetcher->setHttpRequestEndpoint( $interwiki->getApi() ); |
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| 71 | 1 | $queryResultFetcher->setRepositoryTargetUrl( $interwiki->getUrl() ); |
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| 72 | |||
| 73 | 1 | $queryResultFetcher->setHttpResponseCachePrefix( $this->getCacheFactory()->getCachePrefix() ); |
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| 74 | 1 | $queryResultFetcher->setHttpResponseCacheLifetime( $GLOBALS['seqlgHttpResponseCacheLifetime'] ); |
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| 75 | |||
| 76 | 1 | return $queryResultFetcher->fetchQueryResult( $query ); |
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| 77 | } |
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| 78 | |||
| 79 | 1 | private function getCacheFactory() { |
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| 80 | |||
| 81 | 1 | if ( $this->cacheFactory === null ) { |
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| 82 | 1 | $this->cacheFactory = ApplicationFactory::getInstance()->newCacheFactory(); |
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| 83 | 1 | } |
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| 84 | |||
| 85 | 1 | return $this->cacheFactory; |
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| 86 | } |
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| 87 | |||
| 88 | } |
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| 89 |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: