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/* xbfilter.h
Xbase project source code
This file conatains a header file for the xbFilter object which
is used for filtering data.
Copyright (C) 1997 Startech, Gary A. Kunkel
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact:
Mail:
Technology Associates, Inc.
XBase Project
1455 Deming Way #11
Sparks, NV 89434
USA
Email:
xbase@techass.com
See our website at:
xdb.sourceforge.net
V 1.0 10/10/97 - Initial release of software
V 1.5 1/2/97 - Added memo field support
V 1.6a 4/1/98 - Added expression support
V 1.6b 4/8/98 - Numeric index keys
*/
/*! \file xbfilter.h
*/
#ifndef __XB_FILTER_H__
#define __XB_FILTER_H__
#ifdef __GNUG__
#pragma interface
#endif
//! xbFilter class
/*!
*/
class XBDLLEXPORT xbFilter {
public:
xbFilter( xbDbf * dbf, xbIndex * index, char * expression );
xbShort GetFirstFilterRec();
xbShort GetLastFilterRec();
xbShort GetNextFilterRec();
xbShort GetPrevFilterRec();
protected:
xbULong CurFilterRecNo;
xbShort Status;
xbExpNode *e;
xbDbf *d;
xbIndex *i;
};
#endif
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