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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  *
     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 IDBIndex_h
     27 #define IDBIndex_h
     28 
     29 #include "bindings/v8/ScriptWrappable.h"
     30 #include "modules/indexeddb/IDBCursor.h"
     31 #include "modules/indexeddb/IDBDatabase.h"
     32 #include "modules/indexeddb/IDBKeyPath.h"
     33 #include "modules/indexeddb/IDBKeyRange.h"
     34 #include "modules/indexeddb/IDBMetadata.h"
     35 #include "modules/indexeddb/IDBObjectStore.h"
     36 #include "modules/indexeddb/IDBRequest.h"
     37 #include "wtf/Forward.h"
     38 #include "wtf/text/WTFString.h"
     39 
     40 namespace WebCore {
     41 
     42 class ExceptionState;
     43 class IDBObjectStore;
     44 
     45 class IDBIndex : public ScriptWrappable, public RefCounted<IDBIndex> {
     46 public:
     47     static PassRefPtr<IDBIndex> create(const IDBIndexMetadata& metadata, IDBObjectStore* objectStore, IDBTransaction* transaction)
     48     {
     49         return adoptRef(new IDBIndex(metadata, objectStore, transaction));
     50     }
     51     ~IDBIndex();
     52 
     53     // Implement the IDL
     54     const String name() const { return m_metadata.name; }
     55     PassRefPtr<IDBObjectStore> objectStore() const { return m_objectStore; }
     56     PassRefPtr<IDBAny> keyPathAny() const { return IDBAny::create(m_metadata.keyPath); }
     57     const IDBKeyPath keyPath() const { return m_metadata.keyPath; }
     58     bool unique() const { return m_metadata.unique; }
     59     bool multiEntry() const { return m_metadata.multiEntry; }
     60     int64_t id() const { return m_metadata.id; }
     61 
     62     PassRefPtr<IDBRequest> openCursor(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, const String& direction, ExceptionState&);
     63     PassRefPtr<IDBRequest> openCursor(ScriptExecutionContext*, const ScriptValue& key, const String& direction, ExceptionState&);
     64     PassRefPtr<IDBRequest> count(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, ExceptionState&);
     65     PassRefPtr<IDBRequest> count(ScriptExecutionContext*, const ScriptValue& key, ExceptionState&);
     66     PassRefPtr<IDBRequest> openKeyCursor(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, const String& direction, ExceptionState&);
     67     PassRefPtr<IDBRequest> openKeyCursor(ScriptExecutionContext*, const ScriptValue& key, const String& direction, ExceptionState&);
     68     PassRefPtr<IDBRequest> get(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, ExceptionState&);
     69     PassRefPtr<IDBRequest> get(ScriptExecutionContext*, const ScriptValue& key, ExceptionState&);
     70     PassRefPtr<IDBRequest> getKey(ScriptExecutionContext*, PassRefPtr<IDBKeyRange>, ExceptionState&);
     71     PassRefPtr<IDBRequest> getKey(ScriptExecutionContext*, const ScriptValue& key, ExceptionState&);
     72 
     73     void markDeleted() { m_deleted = true; }
     74     bool isDeleted() const;
     75 
     76     IDBDatabaseBackendInterface* backendDB() const;
     77 
     78 private:
     79     IDBIndex(const IDBIndexMetadata&, IDBObjectStore*, IDBTransaction*);
     80 
     81     IDBIndexMetadata m_metadata;
     82     RefPtr<IDBObjectStore> m_objectStore;
     83     RefPtr<IDBTransaction> m_transaction;
     84     bool m_deleted;
     85 };
     86 
     87 } // namespace WebCore
     88 
     89 #endif // IDBIndex_h
     90