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26 #ifndef IDBTransactionBackendImpl_h
27 #define IDBTransactionBackendImpl_h
29 #if ENABLE(INDEXED_DATABASE)
31 #include "DOMStringList.h"
32 #include "IDBBackingStore.h"
33 #include "IDBTransactionBackendInterface.h"
34 #include "IDBTransactionCallbacks.h"
36 #include <wtf/Deque.h>
37 #include <wtf/HashSet.h>
38 #include <wtf/RefPtr.h>
42 class IDBDatabaseBackendImpl;
44 class IDBTransactionBackendImpl : public IDBTransactionBackendInterface {
46 static PassRefPtr<IDBTransactionBackendImpl> create(DOMStringList* objectStores, unsigned short mode, IDBDatabaseBackendImpl*);
47 virtual ~IDBTransactionBackendImpl();
49 virtual PassRefPtr<IDBObjectStoreBackendInterface> objectStore(const String& name, ExceptionCode&);
50 virtual unsigned short mode() const { return m_mode; }
51 virtual bool scheduleTask(PassOwnPtr<ScriptExecutionContext::Task> task, PassOwnPtr<ScriptExecutionContext::Task> abortTask);
52 virtual void didCompleteTaskEvents();
54 virtual void setCallbacks(IDBTransactionCallbacks* callbacks) { m_callbacks = callbacks; }
55 virtual void registerOpenCursor(IDBCursorBackendImpl*);
56 virtual void unregisterOpenCursor(IDBCursorBackendImpl*);
61 IDBTransactionBackendImpl(DOMStringList* objectStores, unsigned short mode, IDBDatabaseBackendImpl*);
64 Unused, // Created, but no tasks yet.
65 StartPending, // Enqueued tasks, but SQLite transaction not yet started.
66 Running, // SQLite transaction started but not yet finished.
67 Finished, // Either aborted or committed.
73 void taskTimerFired(Timer<IDBTransactionBackendImpl>*);
74 void taskEventTimerFired(Timer<IDBTransactionBackendImpl>*);
75 void closeOpenCursors();
77 RefPtr<DOMStringList> m_objectStoreNames;
78 unsigned short m_mode;
81 RefPtr<IDBTransactionCallbacks> m_callbacks;
82 RefPtr<IDBDatabaseBackendImpl> m_database;
84 typedef Deque<OwnPtr<ScriptExecutionContext::Task> > TaskQueue;
85 TaskQueue m_taskQueue;
86 TaskQueue m_abortTaskQueue;
88 RefPtr<IDBBackingStore::Transaction> m_transaction;
90 // FIXME: delete the timer once we have threads instead.
91 Timer<IDBTransactionBackendImpl> m_taskTimer;
92 Timer<IDBTransactionBackendImpl> m_taskEventTimer;
95 HashSet<IDBCursorBackendImpl*> m_openCursors;
98 } // namespace WebCore
100 #endif // ENABLE(INDEXED_DATABASE)
102 #endif // IDBTransactionBackendImpl_h