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/*************** CMGFam H Declares Source Code File (.H) ***************/
/* Name: cmgfam.h Version 1.6 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 2017 - 2020 */
/* */
/* This file contains the MongoDB access method classes declares. */
/***********************************************************************/
#include "cmgoconn.h"
typedef class TXTFAM *PTXF;
typedef class CMGFAM *PCMGFAM;
typedef class MGODEF *PMGODEF;
typedef class TDBCMG *PTDBCMG;
/***********************************************************************/
/* This is the MongoDB Access Method class declaration. */
/***********************************************************************/
class DllExport CMGFAM : public DOSFAM {
friend void mongo_init(bool);
public:
// Constructor
CMGFAM(PJDEF tdp);
#if defined(BSON_SUPPORT)
CMGFAM(PBDEF tdp);
#endif // BSON_SUPPORT
CMGFAM(PCMGFAM txfp);
// Implementation
virtual AMT GetAmType(void) { return TYPE_AM_MGO; }
virtual bool GetUseTemp(void) { return false; }
virtual int GetPos(void);
virtual int GetNextPos(void);
void SetTdbp(PTDBDOS tdbp) { Tdbp = tdbp; }
virtual PTXF Duplicate(PGLOBAL g) { return (PTXF)new(g) CMGFAM(this); }
void SetLrecl(int lrecl) { Lrecl = lrecl; }
// Methods
virtual void Reset(void);
virtual int GetFileLength(PGLOBAL g);
virtual int Cardinality(PGLOBAL g);
virtual int MaxBlkSize(PGLOBAL g, int s);
virtual bool AllocateBuffer(PGLOBAL g) { return false; }
virtual int GetRowID(void);
virtual bool RecordPos(PGLOBAL g);
virtual bool SetPos(PGLOBAL g, int recpos);
virtual int SkipRecord(PGLOBAL g, bool header);
virtual bool OpenTableFile(PGLOBAL g);
virtual int ReadBuffer(PGLOBAL g);
virtual int WriteBuffer(PGLOBAL g);
virtual int DeleteRecords(PGLOBAL g, int irc);
virtual void CloseTableFile(PGLOBAL g, bool abort);
virtual void Rewind(void);
protected:
virtual bool OpenTempFile(PGLOBAL g) { return false; }
virtual bool MoveIntermediateLines(PGLOBAL g, bool *b) { return false; }
virtual int RenameTempFile(PGLOBAL g) { return RC_OK; }
virtual int InitDelete(PGLOBAL g, int fpos, int spos);
bool Init(PGLOBAL g);
// Members
CMgoConn *Cmgp; // Points to a C Mongo connection class
CMGOPARM Pcg; // Parms passed to Cmgp
PFBLOCK To_Fbt; // Pointer to temp file block
MODE Mode;
bool Done; // Init done
}; // end of class CMGFAM
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