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// Spatial Index Library
//
// Copyright (C) 2002 Navel Ltd.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Email:
// mhadji@gmail.com
#ifndef __storagemanager_buffer_h
#define __storagemanager_buffer_h
#include <cstring>
namespace SpatialIndex
{
namespace StorageManager
{
class Buffer : public IBuffer
{
public:
Buffer( IStorageManager& sm, Tools::PropertySet& ps );
// String Value Description
// ----------------------------------------------
// Capacity VT_ULONG Buffer maximum capacity.
// WriteThrough VT_BOOL Enable or disable write through policy.
virtual ~Buffer();
virtual void loadByteArray( const long id, unsigned long& len, byte** data );
virtual void storeByteArray( long& id, const unsigned long len, const byte* const data );
virtual void deleteByteArray( const long id );
virtual void clear();
virtual unsigned long getHits();
protected:
class Entry
{
public:
Entry( unsigned long l, const byte* const d ) : m_pData( 0 ), m_length( l ), m_bDirty( false )
{
m_pData = new byte[m_length];
memcpy( m_pData, d, m_length );
}
~Entry() { delete[] m_pData; }
byte* m_pData;
unsigned long m_length;
bool m_bDirty;
}; // Entry
virtual void addEntry( long id, Entry* pEntry ) = 0;
virtual void removeEntry() = 0;
unsigned long m_capacity;
bool m_bWriteThrough;
IStorageManager* m_pStorageManager;
std::map<long, Entry*> m_buffer;
unsigned long m_hits;
}; // Buffer
}
}
#endif /*__storagemanager_buffer_h*/
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