sql/transaction.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "sql/transaction.h"
   6
   7 #include "base/logging.h"
   8 #include "sql/connection.h"
   9
  10 namespace sql {
  11
  12 Transaction::Transaction(Connection* connection)
  13     : connection_(connection),
  14       is_open_(false) {
  15 }
  16
  17 Transaction::~Transaction() {
  18   if (is_open_)
  19     connection_->RollbackTransaction();
  20 }
  21
  22 bool Transaction::Begin() {
  23   DCHECK(!is_open_) << "Beginning a transaction twice!";
  24   is_open_ = connection_->BeginTransaction();
  25   return is_open_;
  26 }
  27
  28 void Transaction::Rollback() {
  29   DCHECK(is_open_) << "Attempting to roll back a nonexistent transaction. "
  30                    << "Did you remember to call Begin() and check its return?";
  31   is_open_ = false;
  32   connection_->RollbackTransaction();
  33 }
  34
  35 bool Transaction::Commit() {
  36   DCHECK(is_open_) << "Attempting to commit a nonexistent transaction. "
  37                    << "Did you remember to call Begin() and check its return?";
  38   is_open_ = false;
  39   return connection_->CommitTransaction();
  40 }
  41
  42 }  // namespace sql