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<?php |
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namespace Wikibase\QueryEngine\SQLStore; |
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use Doctrine\DBAL\Schema\Table; |
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use Doctrine\DBAL\Types\Type; |
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/** |
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* Contains the tables and table interactors for a given SQLStore configuration. |
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* |
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* @since 0.1 |
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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 StoreSchema { |
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private $tablePrefix; |
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private $dvHandlers; |
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/** |
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* @param string $tablePrefix |
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* @param DataValueHandlers $dataValueHandlers |
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*/ |
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public function __construct( $tablePrefix, DataValueHandlers $dataValueHandlers ) { |
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$this->tablePrefix = $tablePrefix; |
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$this->dvHandlers = $dataValueHandlers; |
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foreach ( $this->dvHandlers->getMainSnakHandlers() as $dvHandler ) { |
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$dvHandler->setTablePrefix( $this->tablePrefix . 'mainsnak_' ); |
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} |
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foreach ( $this->dvHandlers->getQualifierHandlers() as $dvHandler ) { |
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$dvHandler->setTablePrefix( $this->tablePrefix . 'qualifier_' ); |
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} |
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} |
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/** |
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* @return DataValueHandlers |
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*/ |
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public function getDataValueHandlers() { |
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return $this->dvHandlers; |
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} |
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/** |
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* Returns all tables part of the stores schema. |
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* |
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* @return Table[] |
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*/ |
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public function getTables() { |
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return array_merge( |
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$this->getDvTables(), |
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array( |
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$this->getValuelessSnaksTable() |
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) |
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); |
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} |
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/** |
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* @return Table[] |
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*/ |
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private function getDvTables() { |
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$tables = array(); |
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foreach ( $this->dvHandlers->getMainSnakHandlers() as $dvHandler ) { |
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$tables[] = $this->getTableFromDvHandler( $dvHandler ); |
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} |
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foreach ( $this->dvHandlers->getQualifierHandlers() as $dvHandler ) { |
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$tables[] = $this->getTableFromDvHandler( $dvHandler ); |
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} |
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return $tables; |
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} |
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private function getTableFromDvHandler( DataValueHandler $handler ) { |
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$table = $handler->constructTable(); |
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$this->addCommonColumnsToTable( $table ); |
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$this->addCommonIndexesToTable( $table ); |
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$table->addUniqueIndex( array( |
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$handler->getEqualityFieldName(), |
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'property_id', |
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'subject_id', |
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) ); |
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return $table; |
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} |
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private function addCommonColumnsToTable( Table $table ) { |
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$table->addColumn( |
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'row_id', |
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Type::INTEGER, |
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array( |
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'autoincrement' => true, |
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'unsigned' => true, |
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) |
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); |
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$table->addColumn( 'subject_id', Type::STRING, array( 'length' => 16 ) ); |
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$table->addColumn( 'subject_type', Type::STRING, array( 'length' => 8 ) ); |
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$table->addColumn( 'property_id', Type::STRING, array( 'length' => 16 ) ); |
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$table->addColumn( 'statement_rank', Type::SMALLINT ); |
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} |
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private function addCommonIndexesToTable( Table $table ) { |
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$table->setPrimaryKey( array( 'row_id' ) ); |
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$table->addIndex( array( 'subject_id' ) ); |
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$table->addIndex( array( 'property_id' ) ); |
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} |
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/** |
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* @return Table |
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*/ |
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public function getValuelessSnaksTable() { |
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$table = new Table( $this->tablePrefix . 'valueless_snaks' ); |
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$table->addColumn( 'snak_type', Type::INTEGER, array( 'unsigned' => true ) ); |
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$this->addCommonColumnsToTable( $table ); |
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$this->addCommonIndexesToTable( $table ); |
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return $table; |
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} |
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} |
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wmde /
WikibaseQueryEngine
