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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.
*/
#ifndef IDBTransaction_h
#define IDBTransaction_h
#if ENABLE(INDEXED_DATABASE)
#include "ActiveDOMObject.h"
#include "DOMError.h"
#include "Event.h"
#include "EventListener.h"
#include "EventNames.h"
#include "EventTarget.h"
#include "IDBMetadata.h"
#include "IndexedDB.h"
#include "ScriptWrappable.h"
#include <wtf/HashSet.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class IDBCursor;
class IDBDatabase;
class IDBDatabaseBackendInterface;
class IDBDatabaseError;
class IDBObjectStore;
class IDBOpenDBRequest;
struct IDBObjectStoreMetadata;
class IDBTransaction : public ScriptWrappable, public RefCounted<IDBTransaction>, public EventTarget, public ActiveDOMObject {
public:
static PassRefPtr<IDBTransaction> create(ScriptExecutionContext*, int64_t, const Vector<String>& objectStoreNames, IndexedDB::TransactionMode, IDBDatabase*);
static PassRefPtr<IDBTransaction> create(ScriptExecutionContext*, int64_t, IDBDatabase*, IDBOpenDBRequest*, const IDBDatabaseMetadata& previousMetadata);
virtual ~IDBTransaction();
static const AtomicString& modeReadOnly();
static const AtomicString& modeReadWrite();
static const AtomicString& modeVersionChange();
static const AtomicString& modeReadOnlyLegacy();
static const AtomicString& modeReadWriteLegacy();
static IndexedDB::TransactionMode stringToMode(const String&, ExceptionCode&);
static const AtomicString& modeToString(IndexedDB::TransactionMode);
IDBDatabaseBackendInterface* backendDB() const;
int64_t id() const { return m_id; }
bool isActive() const { return m_state == Active; }
bool isFinished() const { return m_state == Finished; }
bool isReadOnly() const { return m_mode == IndexedDB::TransactionReadOnly; }
bool isVersionChange() const { return m_mode == IndexedDB::TransactionVersionChange; }
// Implement the IDBTransaction IDL
const String& mode() const;
IDBDatabase* db() const { return m_database.get(); }
PassRefPtr<DOMError> error() const { return m_error; }
PassRefPtr<IDBObjectStore> objectStore(const String& name, ExceptionCode&);
void abort(ExceptionCode&);
class OpenCursorNotifier {
public:
OpenCursorNotifier(PassRefPtr<IDBTransaction>, IDBCursor*);
~OpenCursorNotifier();
void cursorFinished();
private:
RefPtr<IDBTransaction> m_transaction;
IDBCursor* m_cursor;
};
void registerRequest(IDBRequest*);
void unregisterRequest(IDBRequest*);
void objectStoreCreated(const String&, PassRefPtr<IDBObjectStore>);
void objectStoreDeleted(const String&);
void setActive(bool);
void setError(PassRefPtr<DOMError>, const String& errorMessage);
String webkitErrorMessage() const;
DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
DEFINE_ATTRIBUTE_EVENT_LISTENER(complete);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
virtual void onAbort(PassRefPtr<IDBDatabaseError>);
virtual void onComplete();
// EventTarget
virtual const AtomicString& interfaceName() const;
virtual ScriptExecutionContext* scriptExecutionContext() const;
using EventTarget::dispatchEvent;
virtual bool dispatchEvent(PassRefPtr<Event>) OVERRIDE;
// ActiveDOMObject
virtual bool hasPendingActivity() const OVERRIDE;
virtual bool canSuspend() const OVERRIDE;
virtual void stop() OVERRIDE;
using RefCounted<IDBTransaction>::ref;
using RefCounted<IDBTransaction>::deref;
private:
IDBTransaction(ScriptExecutionContext*, int64_t, const Vector<String>&, IndexedDB::TransactionMode, IDBDatabase*, IDBOpenDBRequest*, const IDBDatabaseMetadata&);
void enqueueEvent(PassRefPtr<Event>);
void closeOpenCursors();
void registerOpenCursor(IDBCursor*);
void unregisterOpenCursor(IDBCursor*);
// EventTarget
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData();
virtual EventTargetData* ensureEventTargetData();
enum State {
Inactive, // Created or started, but not in an event callback
Active, // Created or started, in creation scope or an event callback
Finishing, // In the process of aborting or completing.
Finished, // No more events will fire and no new requests may be filed.
};
int64_t m_id;
RefPtr<IDBDatabase> m_database;
const Vector<String> m_objectStoreNames;
IDBOpenDBRequest* m_openDBRequest;
const IndexedDB::TransactionMode m_mode;
State m_state;
bool m_hasPendingActivity;
bool m_contextStopped;
RefPtr<DOMError> m_error;
String m_errorMessage;
ListHashSet<RefPtr<IDBRequest> > m_requestList;
typedef HashMap<String, RefPtr<IDBObjectStore> > IDBObjectStoreMap;
IDBObjectStoreMap m_objectStoreMap;
typedef HashSet<RefPtr<IDBObjectStore> > IDBObjectStoreSet;
IDBObjectStoreSet m_deletedObjectStores;
typedef HashMap<RefPtr<IDBObjectStore>, IDBObjectStoreMetadata> IDBObjectStoreMetadataMap;
IDBObjectStoreMetadataMap m_objectStoreCleanupMap;
IDBDatabaseMetadata m_previousMetadata;
HashSet<IDBCursor*> m_openCursors;
EventTargetData m_eventTargetData;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBTransaction_h
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