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<?php |
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namespace SMW\SQLStore; |
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/** |
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* Class responsible for the clean-up (aka disposal) of any outdated table entries |
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* that are contained in either the ID_TABLE or related property tables with |
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* reference to a matchable ID. |
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* |
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* @license GNU GPL v2+ |
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* @since 2.4 |
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* |
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* @author mwjames |
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*/ |
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class PropertyTableIdReferenceDisposer { |
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/** |
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* @var SQLStore |
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*/ |
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private $store = null; |
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/** |
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* @var Database |
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*/ |
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private $connection = null; |
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/** |
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* @since 2.4 |
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* |
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* @param SQLStore $store |
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*/ |
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public function __construct( SQLStore $store ) { |
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$this->store = $store; |
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$this->connection = $this->store->getConnection( 'mw.db' ); |
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} |
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/** |
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* Use case: After a property changed its type (_wpg -> _txt), object values in the |
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* ID table are not removed at the time of the conversion process. |
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* |
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* Before an attempt to remove the ID from entity tables, it is secured that no |
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* references exists for the ID. |
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* |
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* @note This method does not check for an ID being object or subject value |
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* and has to be done prior calling this routine. |
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* |
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* @since 2.4 |
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* |
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* @param integer $id |
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*/ |
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public function tryToRemoveOutdatedIDFromEntityTables( $id ) { |
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if ( $this->store->getPropertyTableIdReferenceFinder()->hasResidualReferenceFor( $id ) ) { |
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return null; |
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} |
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$this->removeIDFromEntityReferenceTables( $id ); |
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} |
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/** |
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* @note This method does not make any assumption about the ID state and therefore |
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* has to be validated before this method is called. |
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* |
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* @since 2.4 |
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* |
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* @param integer $id |
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*/ |
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public function cleanUpTableEntriesFor( $id ) { |
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foreach ( $this->store->getPropertyTables() as $proptable ) { |
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if ( $proptable->usesIdSubject() ) { |
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$this->connection->delete( |
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$proptable->getName(), |
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array( 's_id' => $id ), |
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__METHOD__ |
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); |
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} |
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if ( !$proptable->isFixedPropertyTable() ) { |
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$this->connection->delete( |
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$proptable->getName(), |
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array( 'p_id' => $id ), |
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__METHOD__ |
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); |
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} |
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$fields = $proptable->getFields( $this->store ); |
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// Match tables (including ftp_redi) that contain an object reference |
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if ( isset( $fields['o_id'] ) ) { |
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$this->connection->delete( |
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$proptable->getName(), |
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array( 'o_id' => $id ), |
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__METHOD__ |
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); |
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} |
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} |
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$this->removeIDFromEntityReferenceTables( $id ); |
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} |
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private function removeIDFromEntityReferenceTables( $id ) { |
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$this->connection->delete( |
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SQLStore::ID_TABLE, |
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array( 'smw_id' => $id ), |
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__METHOD__ |
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); |
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$this->connection->delete( |
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SQLStore::PROPERTY_STATISTICS_TABLE, |
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array( 'p_id' => $id ), |
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__METHOD__ |
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); |
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$this->connection->delete( |
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SQLStore::QUERY_LINKS_TABLE, |
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array( 's_id' => $id ), |
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__METHOD__ |
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); |
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$this->connection->delete( |
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SQLStore::QUERY_LINKS_TABLE, |
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array( 'o_id' => $id ), |
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__METHOD__ |
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); |
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} |
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} |
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SemanticMediaWiki /
SemanticMediaWiki
