1 files changed, 126 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/EntityStore/DIHandlers/DIConceptHandler.php b/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/EntityStore/DIHandlers/DIConceptHandler.php
new file mode 100644
index 00000000..a9c07193
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/SQLStore/EntityStore/DIHandlers/DIConceptHandler.php
@@ -0,0 +1,126 @@
+<?php
+
+namespace SMW\SQLStore\EntityStore\DIHandlers;
+
+use SMW\DIConcept;
+use SMW\SQLStore\EntityStore\DataItemHandler;
+use SMW\SQLStore\EntityStore\Exception\DataItemHandlerException;
+use SMW\SQLStore\TableBuilder\FieldType;
+use SMWDataItem as DataItem;
+
+/**
+ * This class implements Store access to Concept data items.
+ *
+ * @note The table layout and behavior of this class is not coherent with the
+ * way that other DIs work. This is because of the unfortunate use of the
+ * concept table to store extra cache data, but also due to the design of
+ * concept DIs. This will be cleaned up at some point.
+ *
+ * @license GNU GPL v2+
+ * @since 1.8
+ *
+ * @author Nischay Nahata
+ */
+class DIConceptHandler extends DataItemHandler {
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function getTableFields() {
+		return [
+			'concept_txt'  => FieldType::TYPE_BLOB,
+			'concept_docu' => FieldType::TYPE_BLOB,
+			'concept_features' => FieldType::FIELD_NAMESPACE,
+			'concept_size'  => FieldType::FIELD_NAMESPACE,
+			'concept_depth' => FieldType::FIELD_NAMESPACE,
+			'cache_date'    => FieldType::TYPE_INT_UNSIGNED,
+			'cache_count'   => FieldType::TYPE_INT_UNSIGNED
+		];
+	}
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function getFetchFields() {
+		return [
+			'concept_txt'  => FieldType::TYPE_BLOB,
+			'concept_docu' => FieldType::TYPE_BLOB,
+			'concept_features' => FieldType::FIELD_NAMESPACE,
+			'concept_size'  => FieldType::FIELD_NAMESPACE,
+			'concept_depth' => FieldType::FIELD_NAMESPACE,
+		];
+	}
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function getWhereConds( DataItem $dataItem ) {
+		return [
+			'concept_txt' => $dataItem->getConceptQuery(),
+			'concept_docu' => $dataItem->getDocumentation(),
+			'concept_features' => $dataItem->getQueryFeatures(),
+			'concept_size' => $dataItem->getSize(),
+			'concept_depth' => $dataItem->getDepth()
+		];
+	}
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function getInsertValues( DataItem $dataItem ) {
+		return [
+			'concept_txt' => $dataItem->getConceptQuery(),
+			'concept_docu' => $dataItem->getDocumentation(),
+			'concept_features' => $dataItem->getQueryFeatures(),
+			'concept_size' => $dataItem->getSize(),
+			'concept_depth' => $dataItem->getDepth()
+		];
+	}
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function getIndexField() {
+		return 'concept_txt';
+	}
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function getLabelField() {
+		return 'concept_txt';
+	}
+
+	/**
+	 * @since 1.8
+	 *
+	 * {@inheritDoc}
+	 */
+	public function dataItemFromDBKeys( $dbkeys ) {
+
+		if ( is_array( $dbkeys) && count( $dbkeys ) == 5 ) {
+			return new DIConcept(
+				$dbkeys[0],
+				smwfXMLContentEncode( $dbkeys[1] ),
+				$dbkeys[2],
+				$dbkeys[3],
+				$dbkeys[4]
+			);
+		}
+
+		throw new DataItemHandlerException( 'Failed to create data item from DB keys.' );
+	}
+
+}