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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IDBCursorBackendImpl_h
#define IDBCursorBackendImpl_h
#if ENABLE(INDEXED_DATABASE)
#include "IDBBackingStore.h"
#include "IDBCursorBackendInterface.h"
#include "IDBTransactionBackendImpl.h"
#include "SharedBuffer.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class IDBDatabaseBackendImpl;
class IDBKeyRange;
class IDBCursorBackendImpl : public IDBCursorBackendInterface {
public:
static PassRefPtr<IDBCursorBackendImpl> create(PassRefPtr<IDBBackingStore::Cursor> cursor, IndexedDB::CursorType cursorType, IDBTransactionBackendImpl* transaction, int64_t objectStoreId)
{
return adoptRef(new IDBCursorBackendImpl(cursor, cursorType, IDBDatabaseBackendInterface::NormalTask, transaction, objectStoreId));
}
static PassRefPtr<IDBCursorBackendImpl> create(PassRefPtr<IDBBackingStore::Cursor> cursor, IndexedDB::CursorType cursorType, IDBDatabaseBackendInterface::TaskType taskType, IDBTransactionBackendImpl* transaction, int64_t objectStoreId)
{
return adoptRef(new IDBCursorBackendImpl(cursor, cursorType, taskType, transaction, objectStoreId));
}
virtual ~IDBCursorBackendImpl();
// IDBCursorBackendInterface
virtual void advance(unsigned long, PassRefPtr<IDBCallbacks>, ExceptionCode&);
virtual void continueFunction(PassRefPtr<IDBKey>, PassRefPtr<IDBCallbacks>, ExceptionCode&);
virtual void deleteFunction(PassRefPtr<IDBCallbacks>, ExceptionCode&);
virtual void prefetchContinue(int numberToFetch, PassRefPtr<IDBCallbacks>, ExceptionCode&);
virtual void prefetchReset(int usedPrefetches, int unusedPrefetches);
virtual void postSuccessHandlerCallback() { }
PassRefPtr<IDBKey> key() const { return m_cursor->key(); }
PassRefPtr<IDBKey> primaryKey() const { return m_cursor->primaryKey(); }
PassRefPtr<SharedBuffer> value() const { return (m_cursorType == IndexedDB::CursorKeyOnly) ? 0 : m_cursor->value(); }
void close();
private:
IDBCursorBackendImpl(PassRefPtr<IDBBackingStore::Cursor>, IndexedDB::CursorType, IDBDatabaseBackendInterface::TaskType, IDBTransactionBackendImpl*, int64_t objectStoreId);
class CursorIterationOperation;
class CursorAdvanceOperation;
class CursorPrefetchIterationOperation;
IDBDatabaseBackendInterface::TaskType m_taskType;
IndexedDB::CursorType m_cursorType;
const RefPtr<IDBDatabaseBackendImpl> m_database;
const RefPtr<IDBTransactionBackendImpl> m_transaction;
const int64_t m_objectStoreId;
RefPtr<IDBBackingStore::Cursor> m_cursor; // Must be destroyed before m_transaction.
RefPtr<IDBBackingStore::Cursor> m_savedCursor; // Must be destroyed before m_transaction.
bool m_closed;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBCursorBackendImpl_h
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