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<?php |
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namespace kalanis\kw_mapper\Mappers\Database; |
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use kalanis\kw_mapper\Interfaces\IQueryBuilder; |
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use kalanis\kw_mapper\MapperException; |
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use kalanis\kw_mapper\Mappers\Shared\TEntityChanged; |
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use kalanis\kw_mapper\Records\ARecord; |
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use kalanis\kw_mapper\Records\TFill; |
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use kalanis\kw_mapper\Storage\Database; |
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/** |
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* Trait TReadDatabase |
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* @package kalanis\kw_mapper\Mappers\Database |
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* Separated read DB entry without need to reload mapper |
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* |
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* Contains only operations for reading from DB |
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*/ |
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trait TReadDatabase |
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{ |
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use TEntityChanged; |
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use TFill; |
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/** @var string */ |
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protected $readSource = ''; |
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/** @var Database\ASQL */ |
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protected $readDatabase = null; |
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/** @var Database\Dialects\ADialect */ |
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protected $readDialect = null; |
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/** @var Database\QueryBuilder */ |
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protected $readQueryBuilder = null; |
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/** |
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* @throws MapperException |
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*/ |
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protected function initTReadDatabase(): void |
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{ |
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$this->readDatabase = $this->getReadDatabase(); |
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$this->readDialect = $this->getReadDialect($this->readDatabase); |
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$this->readQueryBuilder = $this->getReadQueryBuilder($this->readDialect); |
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} |
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protected function setReadSource(string $readSource): void |
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{ |
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$this->readSource = $readSource; |
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} |
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protected function getReadSource(): string |
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{ |
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return $this->readSource; |
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} |
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/** |
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* @throws MapperException |
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* @return Database\ADatabase |
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*/ |
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protected function getReadDatabase(): Database\ADatabase |
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{ |
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return Database\DatabaseSingleton::getInstance()->getDatabase( |
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Database\ConfigStorage::getInstance()->getConfig($this->getReadSource()) |
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); |
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} |
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/** |
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* @param Database\ADatabase $database |
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* @throws MapperException |
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* @return Database\Dialects\ADialect |
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*/ |
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protected function getReadDialect(Database\ADatabase $database): Database\Dialects\ADialect |
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{ |
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return Database\Dialects\Factory::getInstance()->getDialectClass($database->languageDialect()); |
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} |
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protected function getReadQueryBuilder(Database\Dialects\ADialect $dialect): Database\QueryBuilder |
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{ |
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return new Database\QueryBuilder($dialect); |
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} |
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/** |
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* @param ARecord $record |
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* @throws MapperException |
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* @return bool |
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*/ |
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protected function loadRecord(ARecord $record): bool |
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{ |
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if ($this->loadRecordByPk($record)) { |
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return true; |
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} |
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$this->readQueryBuilder->clear(); |
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$this->readQueryBuilder->setBaseTable($record->getMapper()->getAlias()); |
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$relations = $record->getMapper()->getRelations(); |
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// conditions - must be equal |
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foreach ($record as $key => $item) { |
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if (isset($relations[$key]) && $this->ifEntryChanged($record->getEntry($key))) { |
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$this->readQueryBuilder->addCondition( |
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$record->getMapper()->getAlias(), |
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$relations[$key], |
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IQueryBuilder::OPERATION_EQ, |
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$item |
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); |
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} |
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} |
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// relations - what to get |
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foreach ($relations as $localAlias => $remoteColumn) { |
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$this->readQueryBuilder->addColumn($record->getMapper()->getAlias(), $remoteColumn, $localAlias); |
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} |
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$this->readQueryBuilder->setLimits(0,1); |
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// query itself |
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$lines = $this->readDatabase->query( |
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strval($this->readDialect->select($this->readQueryBuilder)), |
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$this->readQueryBuilder->getParams() |
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); |
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if (empty($lines)) { |
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return false; |
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} |
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// fill entries in record |
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$line = reset($lines); |
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foreach ($line as $index => $item) { |
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$entry = $record->getEntry($index); |
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$entry->setData($this->typedFillSelection($entry, $item), true); |
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} |
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return true; |
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} |
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/** |
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* @param ARecord $record |
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* @throws MapperException |
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* @return bool |
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*/ |
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protected function loadRecordByPk(ARecord $record): bool |
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{ |
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if (empty($record->getMapper()->getPrimaryKeys())) { |
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return false; |
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} |
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$this->readQueryBuilder->clear(); |
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$this->readQueryBuilder->setBaseTable($record->getMapper()->getAlias()); |
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$relations = $record->getMapper()->getRelations(); |
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// conditions - everything must be equal |
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foreach ($record->getMapper()->getPrimaryKeys() as $key) { |
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try { |
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if (isset($relations[$key]) && $this->ifEntryChanged($record->getEntry($key))) { |
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$this->readQueryBuilder->addCondition( |
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$record->getMapper()->getAlias(), |
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$relations[$key], |
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IQueryBuilder::OPERATION_EQ, |
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$record->offsetGet($key) |
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); |
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} |
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} catch (MapperException $ex) { |
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return false; |
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} |
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} |
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if (empty($this->readQueryBuilder->getConditions())) { // no conditions, nothing in PKs - back to normal system |
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return false; |
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} |
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// relations - what to get |
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foreach ($relations as $localAlias => $remoteColumn) { |
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$this->readQueryBuilder->addColumn($record->getMapper()->getAlias(), $remoteColumn, $localAlias); |
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} |
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// query itself |
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$this->readQueryBuilder->setLimits(0,1); |
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$lines = $this->readDatabase->query( |
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strval($this->readDialect->select($this->readQueryBuilder)), |
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$this->readQueryBuilder->getParams() |
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); |
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if (empty($lines)) { |
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return false; |
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} |
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// fill entries in record |
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$line = reset($lines); |
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foreach ($line as $index => $item) { |
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$entry = $record->getEntry($index); |
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$entry->setData($this->typedFillSelection($entry, $item), true); |
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} |
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return true; |
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} |
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/** |
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* @param ARecord $record |
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* @throws MapperException |
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* @return int |
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*/ |
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public function countRecord(ARecord $record): int |
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{ |
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$this->readQueryBuilder->clear(); |
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$this->readQueryBuilder->setBaseTable($record->getMapper()->getAlias()); |
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$relations = $record->getMapper()->getRelations(); |
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foreach ($record as $key => $item) { |
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if (isset($relations[$key]) && $this->ifEntryChanged($record->getEntry($key))) { |
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$this->readQueryBuilder->addCondition( |
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$record->getMapper()->getAlias(), |
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$relations[$key], |
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IQueryBuilder::OPERATION_EQ, |
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$item |
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); |
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} |
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} |
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if (empty($record->getMapper()->getPrimaryKeys())) { |
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$relation = reset($relations); |
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if (false !== $relation) { |
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$this->readQueryBuilder->addColumn( |
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$record->getMapper()->getAlias(), |
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$relation, |
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'count', |
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IQueryBuilder::AGGREGATE_COUNT |
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); |
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} |
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} else { |
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// foreach ($record->getMapper()->getPrimaryKeys() as $primaryKey) { |
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// $this->readQueryBuilder->addColumn( |
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// $record->getMapper()->getAlias(), |
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// $primaryKey, |
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// '', |
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// IQueryBuilder::AGGREGATE_COUNT |
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// ); |
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// } |
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$pks = $record->getMapper()->getPrimaryKeys(); |
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$key = reset($pks); |
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$this->readQueryBuilder->addColumn( |
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$record->getMapper()->getAlias(), |
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$relations[$key], |
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'count', |
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IQueryBuilder::AGGREGATE_COUNT |
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); |
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} |
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$lines = $this->readDatabase->query( |
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strval($this->readDialect->select($this->readQueryBuilder)), |
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$this->readQueryBuilder->getParams() |
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); |
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if (empty($lines) || !is_iterable($lines)) { |
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// @codeCoverageIgnoreStart |
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return 0; |
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} |
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// @codeCoverageIgnoreEnd |
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$line = reset($lines); |
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return intval(reset($line)); |
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} |
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/** |
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* @param ARecord $record |
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* @throws MapperException |
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* @return ARecord[] |
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*/ |
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public function loadMultiple(ARecord $record): array |
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{ |
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$this->readQueryBuilder->clear(); |
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$this->readQueryBuilder->setBaseTable($record->getMapper()->getAlias()); |
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$relations = $record->getMapper()->getRelations(); |
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foreach ($record as $key => $item) { |
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if (isset($relations[$key]) && $this->ifEntryChanged($record->getEntry($key))) { |
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$this->readQueryBuilder->addCondition( |
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$record->getMapper()->getAlias(), |
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$relations[$key], |
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IQueryBuilder::OPERATION_EQ, |
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$item |
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); |
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} |
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} |
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// relations - what to get |
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foreach ($relations as $localAlias => $remoteColumn) { |
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$this->readQueryBuilder->addColumn($record->getMapper()->getAlias(), $remoteColumn, $localAlias); |
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} |
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// query itself |
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$lines = $this->readDatabase->query( |
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strval($this->readDialect->select($this->readQueryBuilder)), |
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$this->readQueryBuilder->getParams() |
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); |
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if (empty($lines)) { |
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return []; |
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} |
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$result = []; |
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foreach ($lines as $line) { |
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$rec = clone $record; |
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foreach ($line as $index => $item) { |
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$entry = $rec->getEntry($index); |
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$entry->setData($this->typedFillSelection($entry, $item), true); |
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} |
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$result[] = $rec; |
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} |
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return $result; |
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} |
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} |
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