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      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  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #ifndef IDBFactoryBackendInterface_h
     29 #define IDBFactoryBackendInterface_h
     30 
     31 #include "ExceptionCode.h"
     32 #include "IDBCallbacks.h"
     33 #include "PlatformString.h"
     34 #include <wtf/Threading.h>
     35 #include <wtf/Vector.h>
     36 
     37 #if ENABLE(INDEXED_DATABASE)
     38 
     39 namespace WebCore {
     40 
     41 class Frame;
     42 class IDBDatabase;
     43 class SecurityOrigin;
     44 
     45 // This class is shared by IDBFactory (async) and IDBFactorySync (sync).
     46 // This is implemented by IDBFactoryBackendImpl 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 IDBFactoryBackendInterface : public ThreadSafeRefCounted<IDBFactoryBackendInterface> {
     50 public:
     51     static PassRefPtr<IDBFactoryBackendInterface> create();
     52     virtual ~IDBFactoryBackendInterface() { }
     53 
     54     enum BackingStoreType {
     55         DefaultBackingStore,
     56         LevelDBBackingStore
     57     };
     58 
     59     virtual void open(const String& name, PassRefPtr<IDBCallbacks>, PassRefPtr<SecurityOrigin>, Frame*, const String& dataDir, int64_t maximumSize, BackingStoreType) = 0;
     60 };
     61 
     62 } // namespace WebCore
     63 
     64 #endif
     65 
     66 #endif // IDBFactoryBackendInterface_h
     67