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