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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 "modules/indexeddb/IDBOpenDBRequest.h"
#include "bindings/core/v8/Nullable.h"
#include "core/dom/DOMException.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/ExecutionContext.h"
#include "modules/indexeddb/IDBDatabase.h"
#include "modules/indexeddb/IDBDatabaseCallbacks.h"
#include "modules/indexeddb/IDBTracing.h"
#include "modules/indexeddb/IDBVersionChangeEvent.h"
using blink::WebIDBDatabase;
namespace blink {
IDBOpenDBRequest* IDBOpenDBRequest::create(ScriptState* scriptState, IDBDatabaseCallbacks* callbacks, int64_t transactionId, int64_t version)
{
IDBOpenDBRequest* request = new IDBOpenDBRequest(scriptState, callbacks, transactionId, version);
request->suspendIfNeeded();
return request;
}
IDBOpenDBRequest::IDBOpenDBRequest(ScriptState* scriptState, IDBDatabaseCallbacks* callbacks, int64_t transactionId, int64_t version)
: IDBRequest(scriptState, IDBAny::createNull(), nullptr)
, m_databaseCallbacks(callbacks)
, m_transactionId(transactionId)
, m_version(version)
{
ASSERT(!resultAsAny());
}
IDBOpenDBRequest::~IDBOpenDBRequest()
{
}
DEFINE_TRACE(IDBOpenDBRequest)
{
visitor->trace(m_databaseCallbacks);
IDBRequest::trace(visitor);
}
const AtomicString& IDBOpenDBRequest::interfaceName() const
{
return EventTargetNames::IDBOpenDBRequest;
}
void IDBOpenDBRequest::onBlocked(int64_t oldVersion)
{
IDB_TRACE("IDBOpenDBRequest::onBlocked()");
if (!shouldEnqueueEvent())
return;
Nullable<unsigned long long> newVersionNullable = (m_version == IDBDatabaseMetadata::DefaultVersion) ? Nullable<unsigned long long>() : Nullable<unsigned long long>(m_version);
enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::blocked, oldVersion, newVersionNullable));
}
void IDBOpenDBRequest::onUpgradeNeeded(int64_t oldVersion, PassOwnPtr<WebIDBDatabase> backend, const IDBDatabaseMetadata& metadata, WebIDBDataLoss dataLoss, String dataLossMessage)
{
IDB_TRACE("IDBOpenDBRequest::onUpgradeNeeded()");
if (m_contextStopped || !getExecutionContext()) {
OwnPtr<WebIDBDatabase> db = backend;
db->abort(m_transactionId);
db->close();
return;
}
if (!shouldEnqueueEvent())
return;
ASSERT(m_databaseCallbacks);
IDBDatabase* idbDatabase = IDBDatabase::create(getExecutionContext(), backend, m_databaseCallbacks.release());
idbDatabase->setMetadata(metadata);
if (oldVersion == IDBDatabaseMetadata::NoVersion) {
// This database hasn't had a version before.
oldVersion = IDBDatabaseMetadata::DefaultVersion;
}
IDBDatabaseMetadata oldMetadata(metadata);
oldMetadata.version = oldVersion;
m_transaction = IDBTransaction::create(getScriptState(), m_transactionId, idbDatabase, this, oldMetadata);
setResult(IDBAny::create(idbDatabase));
if (m_version == IDBDatabaseMetadata::NoVersion)
m_version = 1;
enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::upgradeneeded, oldVersion, m_version, dataLoss, dataLossMessage));
}
void IDBOpenDBRequest::onSuccess(PassOwnPtr<WebIDBDatabase> backend, const IDBDatabaseMetadata& metadata)
{
IDB_TRACE("IDBOpenDBRequest::onSuccess()");
if (m_contextStopped || !getExecutionContext()) {
OwnPtr<WebIDBDatabase> db = backend;
if (db)
db->close();
return;
}
if (!shouldEnqueueEvent())
return;
IDBDatabase* idbDatabase = nullptr;
if (resultAsAny()) {
// Previous onUpgradeNeeded call delivered the backend.
ASSERT(!backend.get());
idbDatabase = resultAsAny()->idbDatabase();
ASSERT(idbDatabase);
ASSERT(!m_databaseCallbacks);
} else {
ASSERT(backend.get());
ASSERT(m_databaseCallbacks);
idbDatabase = IDBDatabase::create(getExecutionContext(), backend, m_databaseCallbacks.release());
setResult(IDBAny::create(idbDatabase));
}
idbDatabase->setMetadata(metadata);
enqueueEvent(Event::create(EventTypeNames::success));
}
void IDBOpenDBRequest::onSuccess(int64_t oldVersion)
{
IDB_TRACE("IDBOpenDBRequest::onSuccess()");
if (!shouldEnqueueEvent())
return;
if (oldVersion == IDBDatabaseMetadata::NoVersion) {
// This database hasn't had an integer version before.
oldVersion = IDBDatabaseMetadata::DefaultVersion;
}
setResult(IDBAny::createUndefined());
enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::success, oldVersion, Nullable<unsigned long long>()));
}
bool IDBOpenDBRequest::shouldEnqueueEvent() const
{
if (m_contextStopped || !getExecutionContext())
return false;
ASSERT(m_readyState == PENDING || m_readyState == DONE);
if (m_requestAborted)
return false;
return true;
}
DispatchEventResult IDBOpenDBRequest::dispatchEventInternal(PassRefPtrWillBeRawPtr<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() == EventTypeNames::success && resultAsAny()->getType() == IDBAny::IDBDatabaseType && resultAsAny()->idbDatabase()->isClosePending()) {
dequeueEvent(event.get());
setResult(nullptr);
onError(DOMException::create(AbortError, "The connection was closed."));
return DispatchEventResult::CanceledBeforeDispatch;
}
return IDBRequest::dispatchEventInternal(event);
}
} // namespace blink
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