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/*++
� 1998 Seagate Software, Inc. All rights reserved.
Module Name:
Wsbdbent.h
Abstract:
The CWsbDbEntity class.
Author:
Ron White [ronw] 11-Dec-1996
Revision History:
--*/
#ifndef _WSBDBENT_
#define _WSBDBENT_
#include "wsbdb.h"
/*++
Class Name:
CWsbDbEntity
Class Description:
A data base entity.
--*/
class IDB_EXPORT CWsbDbEntity : public CWsbObject, public IWsbDbEntity, public IWsbDbEntityPriv{
// CComObjectRoot
public: STDMETHOD(FinalConstruct)(void); void FinalRelease(void);
// IWsbCollectable
public: STDMETHOD(CompareTo)(IUnknown* pCollectable, SHORT* pResult); WSB_FROM_CWSBOBJECT;
// IWsbDbEntity
public: STDMETHOD(Clone)(REFIID riid, void** ppEntity); STDMETHOD(Disconnect)(void); STDMETHOD(FindEQ)(void); STDMETHOD(FindGT)(void); STDMETHOD(FindGTE)(void); STDMETHOD(FindLT)(void); STDMETHOD(FindLTE)(void); STDMETHOD(First)(void); STDMETHOD(Last)(void); STDMETHOD(MarkAsNew)(void); STDMETHOD(Next)(void); STDMETHOD(Previous)(void); STDMETHOD(Print)(IStream* pStream); STDMETHOD(Remove)(void); STDMETHOD(UseKey)(ULONG type); STDMETHOD(Write)(void); STDMETHOD(SetSequentialScan)(void); STDMETHOD(ResetSequentialScan)(void);
// IWsbDbPriv - For internal use only!
STDMETHOD(Copy)(IWsbDbEntity* pEntity); STDMETHOD(CopyValues)(ULONG flags, IWsbDbEntity* pEntity); STDMETHOD(GetCurKey)(IWsbDbKey** ppKey); STDMETHOD(GetKey)(ULONG KeyType, IWsbDbKey** ppKey); STDMETHOD(GetValue)(ULONG flag, ULONG* pValue); STDMETHOD(Init)(IWsbDb* pDb, IWsbDbSys *pDbSys, ULONG RecType, JET_SESID SessionId); STDMETHOD(SetValue)(ULONG flag, ULONG value);
// Derived Entity needs to define this:
STDMETHOD(UpdateKey)(IWsbDbKey* /*pKey*/) { return(E_NOTIMPL); }
// Private utility functions
private: HRESULT compare(IWsbDbEntity* pEntity, SHORT* pResult); HRESULT fromMem(HGLOBAL hMem); HRESULT get_key(ULONG key_type, UCHAR* bytes, ULONG* pSize); HRESULT getMem(HGLOBAL* phMem); HRESULT toMem(HGLOBAL hMem, ULONG* pSize);
HRESULT jet_compare_field(ULONG col_id, UCHAR* bytes, ULONG size); HRESULT jet_get_data(void); HRESULT jet_make_current(void); HRESULT jet_move(LONG pos); HRESULT jet_seek(ULONG seek_flag);
protected: CComPtr<IWsbDbSys> m_pDbSys; // Pointer to associated Instance
CComPtr<IWsbDb> m_pDb; // Pointer to associated DB
COM_IDB_KEY_INFO* m_pKeyInfo; // Info. about rec. keys
COM_IDB_REC_INFO m_RecInfo; // Rec. type, size, etc.
BOOL m_SaveAsNew; // AsNew flag
USHORT m_UseKeyIndex; // Index into m_pKeyInfo of current control key
ULONG m_ColId; // Jet column ID for record data
HGLOBAL m_hMem; // Mem block for DB I/O
LONG m_SeqNum; // Unique sequence number (for ID)
BOOL m_PosOk; // Cursor is at current record?
JET_SESID m_SessionId; // Jet session ID
JET_TABLEID m_TableId; // Jet table ID
BOOL m_Sequential; // Flag for sequential scan settings
};
#define WSB_FROM_CWSBDBENTITY_BASE \
STDMETHOD(Clone)(REFIID riid, void** ppEntity) \ {return(CWsbDbEntity::Clone(riid, ppEntity));} \ STDMETHOD(Copy)(IWsbDbEntity* pEntity) \ {return(CWsbDbEntity::Copy(pEntity)); } \ STDMETHOD(Disconnect)(void) \ {return(CWsbDbEntity::Disconnect());} \ STDMETHOD(FindEQ)(void) \ {return(CWsbDbEntity::FindEQ());} \ STDMETHOD(FindGT)(void) \ {return(CWsbDbEntity::FindGT());} \ STDMETHOD(FindGTE)(void) \ {return(CWsbDbEntity::FindGTE());} \ STDMETHOD(FindLT)(void) \ {return(CWsbDbEntity::FindLT());} \ STDMETHOD(FindLTE)(void) \ {return(CWsbDbEntity::FindLTE());} \ STDMETHOD(First)(void) \ {return(CWsbDbEntity::First());} \ STDMETHOD(GetCurKey)(IWsbDbKey** ppKey) \ {return(CWsbDbEntity::GetCurKey(ppKey)); } \ STDMETHOD(Init)(IWsbDb* pDb, IWsbDbSys *pDbSys, ULONG RecType, ULONG Session) \ {return(CWsbDbEntity::Init(pDb, pDbSys, RecType, Session)); } \ STDMETHOD(Last)(void) \ {return(CWsbDbEntity::Last());} \ STDMETHOD(MarkAsNew)(void) \ {return(CWsbDbEntity::MarkAsNew());} \ STDMETHOD(Next)(void) \ {return(CWsbDbEntity::Next());} \ STDMETHOD(Previous)(void) \ {return(CWsbDbEntity::Previous());} \ STDMETHOD(Remove)(void) \ {return(CWsbDbEntity::Remove());} \ STDMETHOD(UseKey)(ULONG type) \ {return(CWsbDbEntity::UseKey(type)); } \ STDMETHOD(Write)(void) \ {return(CWsbDbEntity::Write());} \ STDMETHOD(SetSequentialScan)(void) \ {return(CWsbDbEntity::SetSequentialScan());} \ STDMETHOD(ResetSequentialScan)(void) \ {return(CWsbDbEntity::ResetSequentialScan());} \
#define WSB_FROM_CWSBDBENTITY_IMP \
STDMETHOD(CompareTo)(IUnknown* pCollectable, SHORT* pResult) \ {return(CWsbDbEntity::CompareTo(pCollectable, pResult)); } \ STDMETHOD(IsEqual)(IUnknown* pCollectable) \ {return(CWsbDbEntity::IsEqual(pCollectable)); } \
#define WSB_FROM_CWSBDBENTITY \
WSB_FROM_CWSBDBENTITY_BASE \ WSB_FROM_CWSBDBENTITY_IMP
#endif // _WSBDBENT_
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