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26 #ifndef IDBTransactionBackendInterface_h
27 #define IDBTransactionBackendInterface_h
29 #include "ExceptionCode.h"
30 #include "IDBCallbacks.h"
31 #include "PlatformString.h"
32 #include "ScriptExecutionContext.h"
33 #include <wtf/Threading.h>
35 #if ENABLE(INDEXED_DATABASE)
39 class IDBObjectStoreBackendInterface;
40 class IDBTransactionCallbacks;
43 // This class is shared by IDBTransaction (async) and IDBTransactionSync (sync).
44 // This is implemented by IDBTransactionBackendImpl and optionally others (in order to proxy
45 // calls across process barriers). All calls to these classes should be non-blocking and
46 // trigger work on a background thread if necessary.
47 class IDBTransactionBackendInterface : public ThreadSafeShared<IDBTransactionBackendInterface> {
49 virtual ~IDBTransactionBackendInterface() { }
51 virtual PassRefPtr<IDBObjectStoreBackendInterface> objectStore(const String& name) = 0;
52 virtual unsigned short mode() const = 0;
53 virtual bool scheduleTask(PassOwnPtr<ScriptExecutionContext::Task> task, PassOwnPtr<ScriptExecutionContext::Task> abortTask = 0) = 0;
54 virtual void didCompleteTaskEvents() = 0;
55 virtual void abort() = 0;
56 virtual void setCallbacks(IDBTransactionCallbacks*) = 0;
59 } // namespace WebCore
63 #endif // IDBTransactionBackendInterface_h