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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 IDBCursorBackend_h
#define IDBCursorBackend_h
#if ENABLE(INDEXED_DATABASE)
#include "IDBDatabaseBackend.h"
#include "IDBTransactionBackend.h"
#include <wtf/RefPtr.h>
namespace WebCore {
class IDBKeyRange;
class SharedBuffer;
class IDBCursorBackend : public RefCounted<IDBCursorBackend> {
public:
static PassRefPtr<IDBCursorBackend> create(int64_t cursorID, IndexedDB::CursorType cursorType, IDBTransactionBackend& transaction, int64_t objectStoreID)
{
return adoptRef(new IDBCursorBackend(cursorID, cursorType, IDBDatabaseBackend::NormalTask, transaction, objectStoreID));
}
static PassRefPtr<IDBCursorBackend> create(int64_t cursorID, IndexedDB::CursorType cursorType, IDBDatabaseBackend::TaskType taskType, IDBTransactionBackend& transaction, int64_t objectStoreID)
{
return adoptRef(new IDBCursorBackend(cursorID, cursorType, taskType, transaction, objectStoreID));
}
~IDBCursorBackend();
void advance(unsigned long, PassRefPtr<IDBCallbacks>, ExceptionCode&);
void continueFunction(PassRefPtr<IDBKey>, PassRefPtr<IDBCallbacks>, ExceptionCode&);
void deleteFunction(PassRefPtr<IDBCallbacks>, ExceptionCode&);
void postSuccessHandlerCallback() { }
IDBKey* key() const { return m_currentKey.get(); }
IDBKey* primaryKey() const { return m_currentPrimaryKey.get(); }
SharedBuffer* valueBuffer() const { return (m_cursorType == IndexedDB::CursorType::KeyOnly) ? nullptr : m_currentValueBuffer.get(); }
void updateCursorData(IDBKey*, IDBKey* primaryKey, SharedBuffer* valueBuffer);
void close();
IndexedDB::CursorType cursorType() const { return m_cursorType; }
int64_t id() const { return m_cursorID; }
IDBTransactionBackend& transaction() { return *m_transaction; }
void clear();
void setSavedCursorID(int64_t cursorID) { m_savedCursorID = cursorID; }
private:
IDBCursorBackend(int64_t cursorID, IndexedDB::CursorType, IDBDatabaseBackend::TaskType, IDBTransactionBackend&, int64_t objectStoreID);
IDBDatabaseBackend::TaskType m_taskType;
IndexedDB::CursorType m_cursorType;
RefPtr<IDBTransactionBackend> m_transaction;
const int64_t m_objectStoreID;
int64_t m_cursorID;
int64_t m_savedCursorID;
RefPtr<IDBKey> m_currentKey;
RefPtr<IDBKey> m_currentPrimaryKey;
RefPtr<SharedBuffer> m_currentValueBuffer;
bool m_closed;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBCursorBackend_h
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