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 IDBDatabaseBackendInterface_h 27 #define IDBDatabaseBackendInterface_h 28 29 #include "ExceptionCode.h" 30 #include "PlatformString.h" 31 #include <wtf/PassRefPtr.h> 32 #include <wtf/Threading.h> 33 34 #if ENABLE(INDEXED_DATABASE) 35 36 namespace WebCore { 37 38 class DOMStringList; 39 class Frame; 40 class IDBCallbacks; 41 class IDBDatabaseCallbacks; 42 class IDBObjectStoreBackendInterface; 43 class IDBTransactionBackendInterface; 44 45 // This class is shared by IDBDatabase (async) and IDBDatabaseSync (sync). 46 // This is implemented by IDBDatabaseBackendImpl and optionally others (in order to proxy 47 // calls across process barriers). All calls to these classes should be non-blocking and 48 // trigger work on a background thread if necessary. 49 class IDBDatabaseBackendInterface : public ThreadSafeRefCounted<IDBDatabaseBackendInterface> { 50 public: ~IDBDatabaseBackendInterface()51 virtual ~IDBDatabaseBackendInterface() { } 52 53 virtual String name() const = 0; 54 virtual String version() const = 0; 55 virtual PassRefPtr<DOMStringList> objectStoreNames() const = 0; 56 57 virtual PassRefPtr<IDBObjectStoreBackendInterface> createObjectStore(const String& name, const String& keyPath, bool autoIncrement, IDBTransactionBackendInterface*, ExceptionCode&) = 0; 58 virtual void deleteObjectStore(const String& name, IDBTransactionBackendInterface*, ExceptionCode&) = 0; 59 virtual void setVersion(const String& version, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, ExceptionCode&) = 0; 60 virtual PassRefPtr<IDBTransactionBackendInterface> transaction(DOMStringList* storeNames, unsigned short mode, ExceptionCode&) = 0; 61 virtual void close(PassRefPtr<IDBDatabaseCallbacks>) = 0; 62 63 virtual void open(PassRefPtr<IDBDatabaseCallbacks>) = 0; 64 }; 65 66 } // namespace WebCore 67 68 #endif 69 70 #endif // IDBDatabaseBackendInterface_h 71