1 files changed, 175 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/QueryEngineFactory.php b/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/QueryEngineFactory.php
new file mode 100644
index 00000000..185399aa
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/QueryEngineFactory.php
@@ -0,0 +1,175 @@
+<?php
+
+namespace SMW\SQLStore;
+
+use SMW\ApplicationFactory;
+use SMW\DIProperty;
+use SMW\SQLStore\QueryEngine\ConceptQuerySegmentBuilder;
+use SMW\SQLStore\QueryEngine\DescriptionInterpreterFactory;
+use SMW\SQLStore\QueryEngine\EngineOptions;
+use SMW\SQLStore\QueryEngine\HierarchyTempTableBuilder;
+use SMW\SQLStore\QueryEngine\OrderCondition;
+use SMW\SQLStore\QueryEngine\QueryEngine;
+use SMW\SQLStore\QueryEngine\QuerySegmentListBuilder;
+use SMW\SQLStore\QueryEngine\QuerySegmentListBuildManager;
+use SMW\SQLStore\QueryEngine\QuerySegmentListProcessor;
+use SMW\SQLStore\TableBuilder\TemporaryTableBuilder;
+
+/**
+ * @license GNU GPL v2+
+ * @since 2.4
+ *
+ * @author mwjames
+ */
+class QueryEngineFactory {
+
+	/**
+	 * @var SMWSQLStore3
+	 */
+	private $store;
+
+	/**
+	 * @since 2.4
+	 *
+	 * @param SQLStore $store
+	 */
+	public function __construct( SQLStore $store ) {
+		$this->store = $store;
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @return QuerySegmentListBuilder
+	 */
+	public function newQuerySegmentListBuilder() {
+
+		$querySegmentListBuilder = new QuerySegmentListBuilder(
+			$this->store,
+			new DescriptionInterpreterFactory()
+		);
+
+		$querySegmentListBuilder->isFilterDuplicates(
+			ApplicationFactory::getInstance()->getSettings()->get( 'smwgQFilterDuplicates' )
+		);
+
+		return $querySegmentListBuilder;
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @return QuerySegmentListProcessor
+	 */
+	public function newQuerySegmentListProcessor() {
+
+		$settings = ApplicationFactory::getInstance()->getSettings();
+
+		$connection = $this->store->getConnection( 'mw.db.queryengine' );
+		$temporaryTableBuilder = $this->newTemporaryTableBuilder();
+
+		$hierarchyTempTableBuilder = new HierarchyTempTableBuilder(
+			$connection,
+			$temporaryTableBuilder
+		);
+
+		$hierarchyTempTableBuilder->setPropertyHierarchyTableDefinition(
+			$this->store->findPropertyTableID( new DIProperty( '_SUBP' ) ),
+			$settings->get( 'smwgQSubpropertyDepth' )
+		);
+
+		$hierarchyTempTableBuilder->setClassHierarchyTableDefinition(
+			$this->store->findPropertyTableID( new DIProperty( '_SUBC' ) ),
+			$settings->get( 'smwgQSubcategoryDepth' )
+		);
+
+		$querySegmentListProcessor = new QuerySegmentListProcessor(
+			$connection,
+			$temporaryTableBuilder,
+			$hierarchyTempTableBuilder
+		);
+
+		return $querySegmentListProcessor;
+	}
+
+	/**
+	 * @since 2.4
+	 *
+	 * @return QueryEngine
+	 */
+	public function newQueryEngine() {
+
+		$querySegmentListBuilder = $this->newQuerySegmentListBuilder();
+		$applicationFactory = ApplicationFactory::getInstance();
+
+		$settings = $applicationFactory->getSettings();
+
+		$orderCondition = new OrderCondition(
+			$querySegmentListBuilder
+		);
+
+		$orderCondition->isSupported(
+			$settings->isFlagSet( 'smwgQSortFeatures', SMW_QSORT )
+		);
+
+		$orderCondition->asUnconditional(
+			$settings->isFlagSet( 'smwgQSortFeatures', SMW_QSORT_UNCONDITIONAL )
+		);
+
+		$querySegmentListBuildManager = new QuerySegmentListBuildManager(
+			$this->store->getConnection( 'mw.db.queryengine' ),
+			$querySegmentListBuilder,
+			$orderCondition
+		);
+
+		$queryEngine = new QueryEngine(
+			$this->store,
+			$querySegmentListBuildManager,
+			$this->newQuerySegmentListProcessor(),
+			new EngineOptions()
+		);
+
+		$queryEngine->setLogger(
+			$applicationFactory->getMediaWikiLogger()
+		);
+
+		return $queryEngine;
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @return ConceptQuerySegmentBuilder
+	 */
+	public function newConceptQuerySegmentBuilder() {
+
+		$pplicationFactory = ApplicationFactory::getInstance();
+
+		$conceptQuerySegmentBuilder = new ConceptQuerySegmentBuilder(
+			$this->newQuerySegmentListBuilder(),
+			$this->newQuerySegmentListProcessor()
+		);
+
+		$conceptQuerySegmentBuilder->setQueryParser(
+			$pplicationFactory->getQueryFactory()->newQueryParser(
+				$pplicationFactory->getSettings()->get( 'smwgQConceptFeatures' )
+			)
+		);
+
+		return $conceptQuerySegmentBuilder;
+	}
+
+	private function newTemporaryTableBuilder() {
+
+		$temporaryTableBuilder = new TemporaryTableBuilder(
+			$this->store->getConnection( 'mw.db.queryengine' )
+		);
+
+		$temporaryTableBuilder->setAutoCommitFlag(
+			ApplicationFactory::getInstance()->getSettings()->get( 'smwgQTemporaryTablesAutoCommitMode' )
+		);
+
+		return $temporaryTableBuilder;
+	}
+
+}