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<?php |
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namespace Ivory\Connection; |
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use Ivory\Exception\InvalidStateException; |
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use Ivory\Result\IQueryResult; |
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use Ivory\Type\Ivory\IdentifierSerializer; |
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use Ivory\Type\Std\StringType; |
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/** |
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* {@inheritdoc} |
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* |
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* This implementation checks, upon destruction, whether the transaction has properly been closed. If not, i.e., when |
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* the transaction handle gets lost and thus no further means of controlling the transaction are available, a warning is |
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* emitted. |
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*/ |
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class TxHandle implements ITxHandle |
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{ |
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private $open = true; |
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private $stmtExec; |
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private $txCtl; |
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private $identSerializer; |
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private $stringSerializer; |
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public function __construct(IStatementExecution $stmtExec, IObservableTransactionControl $observableTxCtl) |
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{ |
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$this->stmtExec = $stmtExec; |
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$this->txCtl = $observableTxCtl; |
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$this->identSerializer = new IdentifierSerializer(); |
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$this->stringSerializer = new StringType('pg_catalog', 'text'); |
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} |
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public function __destruct() |
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{ |
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if ($this->open) { |
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trigger_error( |
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'An open transaction handle has been released from memory. The transaction has probably stayed open.', |
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E_USER_WARNING |
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); |
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} |
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} |
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private function assertOpen() |
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{ |
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if (!$this->open) { |
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if ($this->txCtl->inTransaction()) { |
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throw new InvalidStateException( |
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'Controlling the transaction using a wrong handle - this has already been closed' |
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); |
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} else { |
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throw new InvalidStateException('The transaction is not open anymore'); |
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} |
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} |
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} |
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public function isOpen(): bool |
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{ |
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return $this->open; |
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} |
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public function setupTransaction($transactionOptions) |
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{ |
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$this->assertOpen(); |
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$txConfig = TxConfig::create($transactionOptions); |
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$this->stmtExec->rawCommand('SET TRANSACTION ' . $txConfig->toSql()); |
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} |
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public function setTransactionSnapshot(string $snapshotId) |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand("SET TRANSACTION SNAPSHOT {$this->stringSerializer->serializeValue($snapshotId)}"); |
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return true; |
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} |
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public function exportTransactionSnapshot(): string |
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{ |
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$this->assertOpen(); |
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/** @var IQueryResult $r */ |
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$r = $this->stmtExec->rawQuery('SELECT pg_export_snapshot()'); |
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return $r->value(); |
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} |
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public function commit() |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand('COMMIT'); |
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$this->open = false; |
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$this->txCtl->notifyTransactionCommit(); |
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} |
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public function rollback() |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand('ROLLBACK'); |
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$this->open = false; |
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$this->txCtl->notifyTransactionRollback(); |
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} |
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public function rollbackIfOpen() |
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{ |
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if ($this->open) { |
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$this->stmtExec->rawCommand('ROLLBACK'); |
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$this->open = false; |
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$this->txCtl->notifyTransactionRollback(); |
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} |
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} |
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public function savepoint(string $name) |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand(sprintf('SAVEPOINT %s', $this->identSerializer->serializeValue($name))); |
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$this->txCtl->notifySavepointSaved($name); |
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} |
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public function rollbackToSavepoint(string $name) |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand(sprintf('ROLLBACK TO SAVEPOINT %s', $this->identSerializer->serializeValue($name))); |
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$this->txCtl->notifyRollbackToSavepoint($name); |
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} |
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public function releaseSavepoint(string $name) |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand(sprintf('RELEASE SAVEPOINT %s', $this->identSerializer->serializeValue($name))); |
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$this->txCtl->notifySavepointReleased($name); |
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} |
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public function prepareTransaction(string $name) |
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{ |
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$this->assertOpen(); |
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$this->stmtExec->rawCommand("PREPARE TRANSACTION {$this->stringSerializer->serializeValue($name)}"); |
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$this->open = false; |
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$this->txCtl->notifyTransactionPrepared($name); |
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} |
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} |
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|
ondrej-bouda /
ivory
