libdap++ Updated for version 3.8.2

GSEClause.h

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00001 
00002 // -*- mode: c++; c-basic-offset:4 -*-
00003 
00004 // This file is part of libdap, A C++ implementation of the OPeNDAP Data
00005 // Access Protocol.
00006 
00007 // Copyright (c) 2002,2003 OPeNDAP, Inc.
00008 // Author: James Gallagher <jgallagher@opendap.org>
00009 //
00010 // This library is free software; you can redistribute it and/or
00011 // modify it under the terms of the GNU Lesser General Public
00012 // License as published by the Free Software Foundation; either
00013 // version 2.1 of the License, or (at your option) any later version.
00014 //
00015 // This library 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 GNU
00018 // Lesser General Public License for more details.
00019 //
00020 // You should have received a copy of the GNU Lesser General Public
00021 // License along with this library; if not, write to the Free Software
00022 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023 //
00024 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
00025 
00026 // (c) COPYRIGHT URI/MIT 1999
00027 // Please read the full copyright statement in the file COPYRIGHT_URI.
00028 //
00029 // Authors:
00030 //      jhrg,jimg       James Gallagher <jgallagher@gso.uri.edu>
00031 
00032 // The Grid Selection Expression Clause class.
00033 
00034 #ifndef _gseclause_h
00035 #define _gseclause_h 1
00036 
00037 
00038 #include <string>
00039 #include <sstream>
00040 
00041 #ifndef _basetype_h
00042 #include "BaseType.h"
00043 #endif
00044 
00045 #ifndef _array_h
00046 #include "Array.h"
00047 #endif
00048 
00049 #ifndef _grid_h
00050 #include "Grid.h"
00051 #endif
00052 
00053 namespace libdap
00054 {
00055 
00056 enum relop {
00057     dods_nop_op,
00058     dods_greater_op,
00059     dods_greater_equal_op,
00060     dods_less_op,
00061     dods_less_equal_op,
00062     dods_equal_op,
00063     dods_not_equal_op
00064 };
00065 
00074 class GSEClause
00075 {
00076 private:
00077     Array *d_map;
00078     // _value1, 2 and _op1, 2 hold the first and second operators and
00079     // operands. For a clause like `var op value' only _op1 and _value1 have
00080     // valid information. For a clause like `value op var op value' the
00081     // second operator and operand are on _op2 and _value2. 1/19/99 jhrg
00082     double d_value1, d_value2;
00083     relop d_op1, d_op2;
00084     int d_start;
00085     int d_stop;
00086 
00087     string d_map_min_value, d_map_max_value;
00088 
00089     GSEClause();  // Hidden default constructor.
00090 
00091     GSEClause(const GSEClause &param); // Hide
00092     GSEClause &operator=(GSEClause &rhs); // Hide
00093 
00094     template<class T> void set_start_stop();
00095     template<class T> void set_map_min_max_value(T min, T max);
00096 
00097     void compute_indices();
00098 
00099 public:
00102     GSEClause(Grid *grid, const string &map, const double value,
00103               const relop op);
00104 
00105     GSEClause(Grid *grid, const string &map, const double value1,
00106               const relop op1, const double value2, const relop op2);
00108 
00109     virtual ~GSEClause() {
00110         delete d_map; d_map = 0;
00111     }
00112     
00113     bool OK() const;
00114 
00117     Array *get_map() const;
00118 
00119     string get_map_name() const;
00120 
00121     int get_start() const;
00122 
00123     int get_stop() const;
00124 
00125     string get_map_min_value() const;
00126 
00127     string get_map_max_value() const;
00129 
00132     void set_map(Array *map);
00133 
00134     void set_start(int start);
00135 
00136     void set_stop(int stop);
00138 };
00139 
00140 } // namespace libdap
00141 
00142 #endif // _gseclause_h
00143