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<?php |
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namespace Wikibase\QueryEngine\SQLStore\SnakStore; |
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use Doctrine\DBAL\Connection; |
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use Doctrine\DBAL\DBALException; |
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use InvalidArgumentException; |
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use OutOfBoundsException; |
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use Wikibase\DataModel\Entity\EntityId; |
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use Wikibase\QueryEngine\QueryEngineException; |
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use Wikibase\QueryEngine\SQLStore\DataValueHandler; |
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/** |
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* @licence GNU GPL v2+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class ValueSnakStore extends SnakStore { |
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private $connection; |
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private $dataValueHandlers; |
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private $snakRole; |
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/** |
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* The array of DataValueHandlers must have DataValue types as array keys pointing to |
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* the corresponding DataValueHandler. |
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* |
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* @param Connection $connection |
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* @param DataValueHandler[] $dataValueHandlers |
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* @param int $supportedSnakRole |
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*/ |
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public function __construct( Connection $connection, array $dataValueHandlers, $supportedSnakRole ) { |
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$this->connection = $connection; |
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$this->dataValueHandlers = $dataValueHandlers; |
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$this->snakRole = $supportedSnakRole; |
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} |
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public function canStore( SnakRow $snakRow ) { |
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return ( $snakRow instanceof ValueSnakRow ) |
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&& $this->snakRole === $snakRow->getSnakRole(); |
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} |
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/** |
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* @param string $dataValueType |
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* |
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* @return DataValueHandler |
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* @throws OutOfBoundsException |
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*/ |
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private function getDataValueHandler( $dataValueType ) { |
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if ( !array_key_exists( $dataValueType, $this->dataValueHandlers ) ) { |
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throw new OutOfBoundsException( "There is no DataValueHandler set for '$dataValueType'" ); |
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} |
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return $this->dataValueHandlers[$dataValueType]; |
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} |
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public function storeSnakRow( SnakRow $snakRow ) { |
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if ( !$this->canStore( $snakRow ) ) { |
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throw new InvalidArgumentException( 'Can only store ValueSnakRow of the right snak type in ValueSnakStore' ); |
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} |
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/** |
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* @var ValueSnakRow $snakRow |
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*/ |
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if ( !array_key_exists( $snakRow->getValue()->getType(), $this->dataValueHandlers ) ) { |
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return; |
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} |
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$dataValueHandler = $this->getDataValueHandler( $snakRow->getValue()->getType() ); |
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$tableName = $dataValueHandler->getTableName(); |
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$this->doInsert( |
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$tableName, |
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$this->getInsertValues( $snakRow, $dataValueHandler ) |
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); |
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} |
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private function doInsert( $tableName, array $values ) { |
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try { |
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$this->connection->insert( $tableName, $values ); |
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} |
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catch ( DBALException $ex ) { |
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throw new QueryEngineException( $ex->getMessage(), 0, $ex ); |
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} |
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} |
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private function getInsertValues( ValueSnakRow $snakRow, DataValueHandler $dataValueHandler ) { |
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return array_merge( |
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array( |
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'subject_id' => $snakRow->getSubjectId()->getSerialization(), |
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'subject_type' => $snakRow->getSubjectId()->getEntityType(), |
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'property_id' => $snakRow->getPropertyId(), |
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'statement_rank' => $snakRow->getStatementRank(), |
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), |
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$dataValueHandler->getInsertValues( $snakRow->getValue() ) |
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); |
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} |
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public function removeSnaksOfSubject( EntityId $subjectId ) { |
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foreach ( $this->dataValueHandlers as $dvHandler ) { |
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$this->doDelete( $dvHandler->getTableName(), $subjectId->getSerialization() ); |
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} |
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} |
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private function doDelete( $tableName, $subjectIdSerialization ) { |
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try { |
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$this->connection->delete( |
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$tableName, |
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array( 'subject_id' => $subjectIdSerialization ) |
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); |
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} |
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catch ( DBALException $ex ) { |
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throw new QueryEngineException( $ex->getMessage(), 0, $ex ); |
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} |
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} |
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} |
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wmde /
WikibaseQueryEngine
