Xbase64 Class Library 3.1.2
xbfilter.h
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00001 /*  xbfilter.h
00002 
00003     Xbase project source code
00004   
00005     This file conatains a header file for the xbFilter object which
00006     is used for filtering data.
00007 
00008     Copyright (C) 1997,2003  Gary A Kunkel
00009     
00010     This program is free software; you can redistribute it and/or modify
00011     it under the terms of the GNU Lesser General Public License as published by
00012     the Free Software Foundation; either version 2 of the License, or
00013     (at your option) any later version.
00014 
00015     This program is distributed in the hope that it will be useful,
00016     but WITHOUT ANY WARRANTY; without even the implied warranty of
00017     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018     GNU Lesser General Public License for more details.
00019 
00020     You should have received a copy of the GNU Lesser General Public License
00021     along with this program; if not, write to the Free Software
00022     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 
00024 
00025     Contact:
00026     
00027      Email:
00028     
00029       xdb-devel@lists.sourceforge.net
00030       xdb-users@lists.sourceforge.net
00031       
00032       
00033      Regular Mail:
00034      
00035        XBase Support
00036        149C South Main St
00037        Keller Texas, 76248     
00038        USA
00039 */
00040 
00044 #ifndef __XB_FILTER_H__
00045 #define __XB_FILTER_H__
00046 
00047 #ifdef __GNU LesserG__
00048 #pragma interface
00049 #endif
00050 
00052 
00055 class XBDLLEXPORT xbFilter
00056 {
00057 public:
00058   xbFilter( xbDbf * dbf, xbIndex * index, char * expression );
00059   virtual ~xbFilter();
00060 
00061   xbShort GetFirstFilterRec();
00062   xbShort GetLastFilterRec();
00063   xbShort GetNextFilterRec();
00064   xbShort GetPrevFilterRec();
00065   xbShort GetStatus() { return Status; }
00066 
00067 protected:
00068   xbULong CurFilterRecNo;
00069   xbShort Status;
00070   xbExpn * flExpn;
00071   xbDbf *d;
00072   xbIndex *i;
00073 };
00074 
00075 #endif