94 lines
2.3 KiB
PHP
94 lines
2.3 KiB
PHP
<?php
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namespace SilverStripe\ORM\Connect;
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use SilverStripe\Dev\Deprecation;
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/**
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* TransactionManager that executes MySQL-compatible transaction control queries
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*/
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class MySQLTransactionManager implements TransactionManager
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{
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protected $dbConn;
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protected $inTransaction = false;
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public function __construct(Database $dbConn)
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{
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$this->dbConn = $dbConn;
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}
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public function transactionStart($transactionMode = false, $sessionCharacteristics = false)
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{
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if ($this->inTransaction) {
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throw new DatabaseException(
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"Already in transaction, can't start another. Consider decorating with NestedTransactionManager."
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);
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}
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// This sets the isolation level for the NEXT transaction, not the current one.
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if ($transactionMode) {
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$this->dbConn->query('SET TRANSACTION ' . $transactionMode);
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}
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$this->dbConn->query('START TRANSACTION');
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if ($sessionCharacteristics) {
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$this->dbConn->query('SET SESSION TRANSACTION ' . $sessionCharacteristics);
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}
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$this->inTransaction = true;
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return true;
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}
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public function transactionEnd($chain = false)
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{
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if (!$this->inTransaction) {
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throw new DatabaseException("Not in transaction, can't end.");
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}
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if ($chain) {
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user_error(
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"transactionEnd() chain argument no longer implemented. Use NestedTransactionManager",
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E_USER_WARNING
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);
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}
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$this->dbConn->query('COMMIT');
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$this->inTransaction = false;
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return true;
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}
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public function transactionRollback($savepoint = null)
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{
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if (!$this->inTransaction) {
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throw new DatabaseException("Not in transaction, can't roll back.");
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}
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if ($savepoint) {
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$this->dbConn->query("ROLLBACK TO SAVEPOINT $savepoint");
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} else {
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$this->dbConn->query('ROLLBACK');
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$this->inTransaction = false;
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}
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return true;
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}
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public function transactionSavepoint($savepoint)
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{
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$this->dbConn->query("SAVEPOINT $savepoint");
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}
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public function transactionDepth()
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{
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return (int)$this->inTransaction;
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}
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public function supportsSavepoints()
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{
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return true;
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}
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}
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