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<?php |
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/** |
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* Spiral, Core Components |
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* |
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* @author Wolfy-J |
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*/ |
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namespace Spiral\ORM; |
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use Spiral\Database\Entities\Driver; |
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use Spiral\ORM\Exceptions\RecordException; |
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/** |
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* Singular ORM transaction with ability to automatically open transaction for all involved |
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* drivers. |
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* |
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* Drivers will be automatically fetched from commands. Potentially Transaction can be improved |
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* to optimize commands inside it (batch insert, batch delete and etc). |
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* |
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* Technically Transaction can work as classic UnitOfWork with ability to watch entities, but it's |
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* recommended to create additional abstraction at top with proper business rules. |
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*/ |
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final class Transaction implements TransactionInterface |
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{ |
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/** |
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* @var CommandInterface[] |
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*/ |
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private $commands = []; |
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/** |
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* Store entity information (update or insert). |
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* |
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* @param RecordInterface $record |
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* @param bool $queueRelations |
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* |
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* @throws RecordException |
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*/ |
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public function store(RecordInterface $record, bool $queueRelations = true) |
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{ |
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$this->addCommand($record->queueStore($queueRelations)); |
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} |
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/** |
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* Delete entity from database. |
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* |
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* @param RecordInterface $record |
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* |
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* @throws RecordException |
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*/ |
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public function delete(RecordInterface $record) |
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{ |
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$this->addCommand($record->queueDelete()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addCommand(CommandInterface $command) |
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{ |
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$this->commands[] = $command; |
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} |
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/** |
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* Will return flattened list of commands. |
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* |
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* @return \Generator |
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*/ |
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public function getCommands() |
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{ |
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foreach ($this->commands as $command) { |
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if ($command instanceof \Traversable) { |
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//Nested commands |
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yield from $command; |
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} |
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yield $command; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @param bool $forceTransaction When set to false transaction would not be started when only |
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* single command is presented inside (all commands are flatten |
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* before appearing inside this method). |
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* @param bool $clean When set to true - transaction will be cleaned after |
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* execution, default behaviour. |
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*/ |
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public function run(bool $forceTransaction = false, bool $clean = true) |
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{ |
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/** |
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* @var Driver[] $drivers |
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* @var CommandInterface[] $commands |
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*/ |
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$drivers = $commands = []; |
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foreach ($this->getCommands() as $command) { |
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if ($command instanceof SQLCommandInterface) { |
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$driver = $command->getDriver(); |
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if (!empty($driver) && !in_array($driver, $drivers)) { |
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$drivers[] = $driver; |
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} |
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} |
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$commands[] = $command; |
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} |
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if (empty($commands)) { |
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return; |
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} |
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//Commands we executed and drivers with started transactions |
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$executedCommands = $wrappedDrivers = []; |
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try { |
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if ($forceTransaction || count($commands) > 1) { |
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//Starting transactions |
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foreach ($drivers as $driver) { |
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$driver->beginTransaction(); |
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$wrappedDrivers[] = $driver; |
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} |
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} |
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//Run commands |
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foreach ($commands as $command) { |
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$command->execute(); |
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$executedCommands[] = $command; |
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} |
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} catch (\Throwable $e) { |
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foreach (array_reverse($wrappedDrivers) as $driver) { |
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/** @var Driver $driver */ |
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$driver->rollbackTransaction(); |
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} |
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foreach (array_reverse($executedCommands) as $command) { |
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/** @var CommandInterface $command */ |
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$command->rollBack(); |
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} |
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$this->commands = []; |
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throw $e; |
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} |
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foreach (array_reverse($wrappedDrivers) as $driver) { |
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/** @var Driver $driver */ |
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$driver->commitTransaction(); |
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} |
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foreach ($executedCommands as $command) { |
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//This is the point when record will get related PK and FKs filled |
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$command->complete(); |
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} |
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//Clean transaction |
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if ($clean) { |
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$this->commands = []; |
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} |
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} |
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} |
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