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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "IDBTransaction.h"
#if ENABLE(INDEXED_DATABASE)
#include "Event.h"
#include "EventException.h"
#include "IDBAbortEvent.h"
#include "IDBDatabase.h"
#include "IDBObjectStore.h"
#include "IDBObjectStoreBackendInterface.h"
#include "IDBPendingTransactionMonitor.h"
#include "ScriptExecutionContext.h"
namespace WebCore {
IDBTransaction::IDBTransaction(ScriptExecutionContext* context, PassRefPtr<IDBTransactionBackendInterface> backend, IDBDatabase* db)
: ActiveDOMObject(context, this)
, m_backend(backend)
, m_database(db)
, m_stopped(false)
, m_timer(this, &IDBTransaction::timerFired)
{
IDBPendingTransactionMonitor::addPendingTransaction(m_backend->id());
}
IDBTransaction::~IDBTransaction()
{
}
unsigned short IDBTransaction::mode() const
{
return m_backend->mode();
}
IDBDatabase* IDBTransaction::db()
{
return m_database.get();
}
PassRefPtr<IDBObjectStore> IDBTransaction::objectStore(const String& name, const ExceptionCode&)
{
RefPtr<IDBObjectStoreBackendInterface> objectStoreBackend = m_backend->objectStore(name);
RefPtr<IDBObjectStore> objectStore = IDBObjectStore::create(objectStoreBackend);
return objectStore.release();
}
void IDBTransaction::abort()
{
m_backend->abort();
}
ScriptExecutionContext* IDBTransaction::scriptExecutionContext() const
{
return ActiveDOMObject::scriptExecutionContext();
}
void IDBTransaction::onAbort()
{
if (!m_stopped) {
m_selfRef = this;
m_stopped = true;
m_timer.startOneShot(0);
}
// Release the backend as it holds a (circular) reference back to us.
m_backend.clear();
}
int IDBTransaction::id() const
{
return m_backend->id();
}
bool IDBTransaction::canSuspend() const
{
// We may be in the middle of a transaction so we cannot suspend our object.
// Instead, we simply don't allow the owner page to go into the back/forward cache.
return false;
}
void IDBTransaction::stop()
{
if (!m_stopped) {
// The document is getting detached. Abort!
m_stopped = true;
m_backend->abort();
}
}
EventTargetData* IDBTransaction::eventTargetData()
{
return &m_eventTargetData;
}
EventTargetData* IDBTransaction::ensureEventTargetData()
{
return &m_eventTargetData;
}
void IDBTransaction::timerFired(Timer<IDBTransaction>* transaction)
{
ASSERT(m_selfRef);
RefPtr<IDBTransaction> selfRef = m_selfRef.release();
dispatchEvent(IDBAbortEvent::create());
}
}
#endif // ENABLE(INDEXED_DATABASE)
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