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/*
* Copyright (C) 2012 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 "modules/indexeddb/IDBOpenDBRequest.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/ScriptExecutionContext.h"
#include "modules/indexeddb/IDBDatabase.h"
#include "modules/indexeddb/IDBDatabaseCallbacksImpl.h"
#include "modules/indexeddb/IDBPendingTransactionMonitor.h"
#include "modules/indexeddb/IDBTracing.h"
#include "modules/indexeddb/IDBVersionChangeEvent.h"
namespace WebCore {
PassRefPtr<IDBOpenDBRequest> IDBOpenDBRequest::create(ScriptExecutionContext* context, PassRefPtr<IDBDatabaseCallbacksImpl> callbacks, int64_t transactionId, int64_t version)
{
RefPtr<IDBOpenDBRequest> request(adoptRef(new IDBOpenDBRequest(context, callbacks, transactionId, version)));
request->suspendIfNeeded();
return request.release();
}
IDBOpenDBRequest::IDBOpenDBRequest(ScriptExecutionContext* context, PassRefPtr<IDBDatabaseCallbacksImpl> callbacks, int64_t transactionId, int64_t version)
: IDBRequest(context, IDBAny::createNull(), IDBDatabaseBackendInterface::NormalTask, 0)
, m_databaseCallbacks(callbacks)
, m_transactionId(transactionId)
, m_version(version)
{
ASSERT(!m_result);
ScriptWrappable::init(this);
}
IDBOpenDBRequest::~IDBOpenDBRequest()
{
}
const AtomicString& IDBOpenDBRequest::interfaceName() const
{
return eventNames().interfaceForIDBOpenDBRequest;
}
void IDBOpenDBRequest::onBlocked(int64_t oldVersion)
{
IDB_TRACE("IDBOpenDBRequest::onBlocked()");
if (!shouldEnqueueEvent())
return;
RefPtr<IDBAny> newVersionAny = (m_version == IDBDatabaseMetadata::DefaultIntVersion) ? IDBAny::createNull() : IDBAny::create(m_version);
enqueueEvent(IDBVersionChangeEvent::create(IDBAny::create(oldVersion), newVersionAny.release(), eventNames().blockedEvent));
}
void IDBOpenDBRequest::onUpgradeNeeded(int64_t oldVersion, PassRefPtr<IDBDatabaseBackendInterface> prpDatabaseBackend, const IDBDatabaseMetadata& metadata, WebKit::WebIDBCallbacks::DataLoss dataLoss)
{
IDB_TRACE("IDBOpenDBRequest::onUpgradeNeeded()");
if (m_contextStopped || !scriptExecutionContext()) {
RefPtr<IDBDatabaseBackendInterface> db = prpDatabaseBackend;
db->abort(m_transactionId);
db->close(m_databaseCallbacks);
return;
}
if (!shouldEnqueueEvent())
return;
ASSERT(m_databaseCallbacks);
RefPtr<IDBDatabaseBackendInterface> databaseBackend = prpDatabaseBackend;
RefPtr<IDBDatabase> idbDatabase = IDBDatabase::create(scriptExecutionContext(), databaseBackend, m_databaseCallbacks);
idbDatabase->setMetadata(metadata);
m_databaseCallbacks->connect(idbDatabase.get());
m_databaseCallbacks = 0;
if (oldVersion == IDBDatabaseMetadata::NoIntVersion) {
// This database hasn't had an integer version before.
oldVersion = IDBDatabaseMetadata::DefaultIntVersion;
}
IDBDatabaseMetadata oldMetadata(metadata);
oldMetadata.intVersion = oldVersion;
m_transaction = IDBTransaction::create(scriptExecutionContext(), m_transactionId, idbDatabase.get(), this, oldMetadata);
m_result = IDBAny::create(idbDatabase.release());
if (m_version == IDBDatabaseMetadata::NoIntVersion)
m_version = 1;
enqueueEvent(IDBVersionChangeEvent::create(IDBAny::create(oldVersion), IDBAny::create(m_version), eventNames().upgradeneededEvent, dataLoss));
}
void IDBOpenDBRequest::onSuccess(PassRefPtr<IDBDatabaseBackendInterface> prpBackend, const IDBDatabaseMetadata& metadata)
{
IDB_TRACE("IDBOpenDBRequest::onSuccess()");
if (m_contextStopped || !scriptExecutionContext()) {
RefPtr<IDBDatabaseBackendInterface> db = prpBackend;
db->close(m_databaseCallbacks);
return;
}
if (!shouldEnqueueEvent())
return;
RefPtr<IDBDatabaseBackendInterface> backend = prpBackend;
RefPtr<IDBDatabase> idbDatabase;
if (m_result) {
idbDatabase = m_result->idbDatabase();
ASSERT(idbDatabase);
ASSERT(!m_databaseCallbacks);
} else {
ASSERT(m_databaseCallbacks);
idbDatabase = IDBDatabase::create(scriptExecutionContext(), backend.release(), m_databaseCallbacks);
m_databaseCallbacks->connect(idbDatabase.get());
m_databaseCallbacks = 0;
m_result = IDBAny::create(idbDatabase.get());
}
idbDatabase->setMetadata(metadata);
enqueueEvent(Event::create(eventNames().successEvent, false, false));
}
bool IDBOpenDBRequest::shouldEnqueueEvent() const
{
if (m_contextStopped || !scriptExecutionContext())
return false;
ASSERT(m_readyState == PENDING || m_readyState == DONE);
if (m_requestAborted)
return false;
return true;
}
bool IDBOpenDBRequest::dispatchEvent(PassRefPtr<Event> event)
{
// If the connection closed between onUpgradeNeeded and the delivery of the "success" event,
// an "error" event should be fired instead.
if (event->type() == eventNames().successEvent && m_result->type() == IDBAny::IDBDatabaseType && m_result->idbDatabase()->isClosePending()) {
m_result.clear();
onError(DOMError::create(AbortError, "The connection was closed."));
return false;
}
return IDBRequest::dispatchEvent(event);
}
} // namespace WebCore
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