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      1 /*
      2  * Copyright (C) 2011 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 IDBIndexBackendImpl_h
     27 #define IDBIndexBackendImpl_h
     28 
     29 #if ENABLE(INDEXED_DATABASE)
     30 
     31 #include "IDBCursorBackendInterface.h"
     32 #include "IDBIndexBackendInterface.h"
     33 
     34 namespace WebCore {
     35 
     36 class IDBBackingStore;
     37 class IDBKey;
     38 class IDBObjectStoreBackendImpl;
     39 class ScriptExecutionContext;
     40 
     41 class IDBIndexBackendImpl : public IDBIndexBackendInterface {
     42 public:
     43     static PassRefPtr<IDBIndexBackendImpl> create(IDBBackingStore* backingStore, int64_t databaseId, const IDBObjectStoreBackendImpl* objectStoreBackend, int64_t id, const String& name, const String& storeName, const String& keyPath, bool unique)
     44     {
     45         return adoptRef(new IDBIndexBackendImpl(backingStore, databaseId, objectStoreBackend, id, name, storeName, keyPath, unique));
     46     }
     47     static PassRefPtr<IDBIndexBackendImpl> create(IDBBackingStore* backingStore, int64_t databaseId, const IDBObjectStoreBackendImpl* objectStoreBackend, const String& name, const String& storeName, const String& keyPath, bool unique)
     48     {
     49         return adoptRef(new IDBIndexBackendImpl(backingStore, databaseId, objectStoreBackend, name, storeName, keyPath, unique));
     50     }
     51     virtual ~IDBIndexBackendImpl();
     52 
     53     int64_t id() const
     54     {
     55         ASSERT(m_id != InvalidId);
     56         return m_id;
     57     }
     58     void setId(int64_t id) { m_id = id; }
     59     bool hasValidId() const { return m_id != InvalidId; };
     60 
     61     bool addingKeyAllowed(IDBKey*);
     62 
     63     // Implements IDBIndexBackendInterface.
     64     virtual String name() { return m_name; }
     65     virtual String storeName() { return m_storeName; }
     66     virtual String keyPath() { return m_keyPath; }
     67     virtual bool unique() { return m_unique; }
     68 
     69     virtual void openCursor(PassRefPtr<IDBKeyRange>, unsigned short direction, PassRefPtr<IDBCallbacks>, IDBTransactionBackendInterface*, ExceptionCode&);
     70     virtual void openKeyCursor(PassRefPtr<IDBKeyRange>, unsigned short direction, PassRefPtr<IDBCallbacks>, IDBTransactionBackendInterface*, ExceptionCode&);
     71     virtual void get(PassRefPtr<IDBKey>, PassRefPtr<IDBCallbacks>, IDBTransactionBackendInterface*, ExceptionCode&);
     72     virtual void getKey(PassRefPtr<IDBKey>, PassRefPtr<IDBCallbacks>, IDBTransactionBackendInterface*, ExceptionCode&);
     73 
     74 private:
     75     IDBIndexBackendImpl(IDBBackingStore*, int64_t databaseId, const IDBObjectStoreBackendImpl*, int64_t id, const String& name, const String& storeName, const String& keyPath, bool unique);
     76     IDBIndexBackendImpl(IDBBackingStore*, int64_t databaseId, const IDBObjectStoreBackendImpl*, const String& name, const String& storeName, const String& keyPath, bool unique);
     77 
     78     static void openCursorInternal(ScriptExecutionContext*, PassRefPtr<IDBIndexBackendImpl>, PassRefPtr<IDBKeyRange>, unsigned short direction, IDBCursorBackendInterface::CursorType, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBTransactionBackendInterface>);
     79     static void getInternal(ScriptExecutionContext*, PassRefPtr<IDBIndexBackendImpl>, PassRefPtr<IDBKey>, bool getObject, PassRefPtr<IDBCallbacks>);
     80 
     81     static const int64_t InvalidId = 0;
     82 
     83     RefPtr<IDBBackingStore> m_backingStore;
     84 
     85     int64_t m_databaseId;
     86     const IDBObjectStoreBackendImpl* m_objectStoreBackend;
     87     int64_t m_id;
     88     String m_name;
     89     String m_storeName;
     90     String m_keyPath;
     91     bool m_unique;
     92 };
     93 
     94 } // namespace WebCore
     95 
     96 #endif
     97 
     98 #endif // IDBIndexBackendImpl_h
     99