1 /* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef IDBTransactionBackendInterface_h 27 #define IDBTransactionBackendInterface_h 28 29 #include "ExceptionCode.h" 30 #include "IDBCallbacks.h" 31 #include "PlatformString.h" 32 #include "ScriptExecutionContext.h" 33 #include <wtf/Threading.h> 34 35 #if ENABLE(INDEXED_DATABASE) 36 37 namespace WebCore { 38 39 class IDBObjectStoreBackendInterface; 40 class IDBTransactionCallbacks; 41 42 // This class is shared by IDBTransaction (async) and IDBTransactionSync (sync). 43 // This is implemented by IDBTransactionBackendImpl and optionally others (in order to proxy 44 // calls across process barriers). All calls to these classes should be non-blocking and 45 // trigger work on a background thread if necessary. 46 class IDBTransactionBackendInterface : public ThreadSafeRefCounted<IDBTransactionBackendInterface> { 47 public: ~IDBTransactionBackendInterface()48 virtual ~IDBTransactionBackendInterface() { } 49 50 virtual PassRefPtr<IDBObjectStoreBackendInterface> objectStore(const String& name, ExceptionCode&) = 0; 51 virtual unsigned short mode() const = 0; 52 virtual bool scheduleTask(PassOwnPtr<ScriptExecutionContext::Task> task, PassOwnPtr<ScriptExecutionContext::Task> abortTask = 0) = 0; 53 virtual void didCompleteTaskEvents() = 0; 54 virtual void abort() = 0; 55 virtual void setCallbacks(IDBTransactionCallbacks*) = 0; 56 }; 57 58 } // namespace WebCore 59 60 #endif 61 62 #endif // IDBTransactionBackendInterface_h 63