Metakit: custom.h Source File

00001 // custom.h --
00002 // $Id: custom.h,v 1.6 2003/11/23 01:42:51 wcvs Exp $
00003 // This is part of Metakit, the homepage is https://www.equi4.com/metakit/
00004 
00009 #ifndef __CUSTOM_H__
00010 #define __CUSTOM_H__
00011 
00012 #ifndef __FIELD_H__
00013 #include "field.h"
00014 #endif
00015 #ifndef __STORE_H__
00016 #include "handler.h"
00017 #endif
00018 
00020 
00021 class c4_CustomSeq : public c4_HandlerSeq
00022 {
00023   c4_CustomViewer* _viewer;
00024   bool _inited;
00025 
00026 public:
00027   c4_CustomSeq (c4_CustomViewer* viewer_);
00028   virtual ~c4_CustomSeq ();
00029 
00030   virtual int NumRows() const;
00031     
00032   virtual bool RestrictSearch(c4_Cursor, int&, int&);
00033 
00034   virtual void InsertAt(int, c4_Cursor, int =1);
00035   virtual void RemoveAt(int, int =1);
00036   virtual void Move(int from_, int);
00037 
00038   bool DoGet(int row_, int col_, c4_Bytes& buf_) const;
00039   void DoSet(int row_, int col_, const c4_Bytes& buf_);
00040 
00041 private: // this *is* used, as override
00042   virtual c4_Handler* CreateHandler(const c4_Property&);
00043 };
00044 
00046 
00047   extern c4_CustomViewer* f4_CustSlice(c4_Sequence&, int, int , int);
00048   extern c4_CustomViewer* f4_CustProduct(c4_Sequence&, const c4_View&);
00049   extern c4_CustomViewer* f4_CustRemapWith(c4_Sequence&, const c4_View&);
00050   extern c4_CustomViewer* f4_CustPair(c4_Sequence&, const c4_View&);
00051   extern c4_CustomViewer* f4_CustConcat(c4_Sequence&, const c4_View&);
00052   extern c4_CustomViewer* f4_CustRename(c4_Sequence&, 
00053                       const c4_Property&, const c4_Property&);
00054   extern c4_CustomViewer* f4_CustGroupBy(c4_Sequence&, 
00055                       const c4_View&, const c4_Property&);
00056   extern c4_CustomViewer* f4_CustJoinProp(c4_Sequence&, 
00057                       const c4_ViewProp&, bool);
00058   extern c4_CustomViewer* f4_CustJoin(c4_Sequence&, 
00059                       const c4_View&, const c4_View&, bool);
00060 
00062 
00063 #endif