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   if (is_open_) {
  24     NOTREACHED() << "Beginning a transaction twice!";
  25     return false;
  26   }
  27   is_open_ = connection_->BeginTransaction();
  28   return is_open_;
  29 }
  30
  31 void Transaction::Rollback() {
  32   if (!is_open_) {
  33     NOTREACHED() << "Attempting to roll back a nonexistent transaction. "
  34                  << "Did you remember to call Begin() and check its return?";
  35     return;
  36   }
  37   is_open_ = false;
  38   connection_->RollbackTransaction();
  39 }
  40
  41 bool Transaction::Commit() {
  42   if (!is_open_) {
  43     NOTREACHED() << "Attempting to commit a nonexistent transaction. "
  44                  << "Did you remember to call Begin() and check its return?";
  45     return false;
  46   }
  47   is_open_ = false;
  48   return connection_->CommitTransaction();
  49 }
  50
  51 }  // namespace sql