source: box/trunk/lib/raidfile/RaidFileWrite.h @ 2543

// --------------------------------------------------------------------------
//
// File
//              Name:    RaidFileWrite.h
//              Purpose: Writing RAID like files
//              Created: 2003/07/10
//
// --------------------------------------------------------------------------

#ifndef RAIDFILEWRITE__H
#define RAIDFILEWRITE__H

#include <string>

#include "IOStream.h"

class RaidFileDiscSet;

// --------------------------------------------------------------------------
//
// Class
//              Name:    RaidFileWrite
//              Purpose: Writing RAID like files
//              Created: 2003/07/10
//
// --------------------------------------------------------------------------
class RaidFileWrite : public IOStream
{
public:
        RaidFileWrite(int SetNumber, const std::string &Filename);
        RaidFileWrite(int SetNumber, const std::string &Filename, int refcount);
        ~RaidFileWrite();
private:
        RaidFileWrite(const RaidFileWrite &rToCopy);

public:
        // IOStream interface
        virtual int Read(void *pBuffer, int NBytes, int Timeout = IOStream::TimeOutInfinite);   // will exception
        virtual void Write(const void *pBuffer, int NBytes);
        virtual pos_type GetPosition() const;
        virtual void Seek(pos_type Offset, int SeekType);
        virtual void Close();           // will discard the file! Use commit instead.
        virtual bool StreamDataLeft();
        virtual bool StreamClosed();

        // Extra bits
        void Open(bool AllowOverwrite = false);
        void Commit(bool ConvertToRaidNow = false);
        void Discard();
        void TransformToRaidStorage();
        void Delete();
        pos_type GetFileSize();
        pos_type GetDiscUsageInBlocks();
        
        static void CreateDirectory(int SetNumber, const std::string &rDirName, bool Recursive = false, int mode = 0777);
        static void CreateDirectory(const RaidFileDiscSet &rSet, const std::string &rDirName, bool Recursive = false, int mode = 0777);
        
private:

private:
        int mSetNumber;
        std::string mFilename;
        int mOSFileHandle;
        int mRefCount;
};

#endif // RAIDFILEWRITE__H