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SolverAPI.h

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00001 /*
00002     Copyright (c) 2005, Quentin Lequy and Romain Gaucher
00003     All rights reserved.
00004 
00005     Redistribution and use in source and binary forms, with or 
00006     without modification, are permitted provided that the following 
00007     conditions are met:
00008 
00009         * Redistributions of source code must retain the above copyright 
00010           notice, this list of conditions and the following disclaimer.
00011 
00012         * Redistributions in binary form must reproduce the above copyright
00013           notice, this list of conditions and the following disclaimer in the
00014           documentation and/or other materials provided with the distribution.
00015 
00016         * Neither the name of Quentin Lequy or Romain Gaucher nor the names 
00017           of its contributors may be used to endorse or promote products 
00018           derived from this software without specific prior written permission.
00019 
00020     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00021     AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00022     IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
00023     ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
00024     LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
00025     DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00026     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
00027     AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
00028     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
00029     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030 */
00031 
00032 #ifndef __SOLVERAPI_H
00033 #define __SOLVERAPI_H
00034 
00035 #include "Solver.h"
00036 #include <string>
00037 #include <vector>
00038 #include <list>
00039 #include <map>
00040 
00041 namespace Modelib {
00042 
00043 enum SolverName 
00044 {
00045     CPLEX=0,  
00046     GLPK=1,   
00047     GLPSOL=1, 
00048     NONE=42   
00049 };
00050 
00051 typedef SolverName API;
00052 
00061 class SolverAPI
00062 {
00063     SolverName  apiSolver;
00064     std::string path;     
00065     std::string fileLP;   
00066     Solver     *solver;   
00067 
00068     Solution    solution; 
00069 
00070   protected:
00072     void AllocSolver(const SolverName);
00073 
00074   public:
00075     SolverAPI(const SolverName = GLPK);
00076     ~SolverAPI();
00077 
00079     void Init(const std::string& , const std::string& _path="");
00080 
00082     void Init(const SolverName, const std::string&, const std::string& _path="");
00083 
00085     void SetAPI(const SolverName);
00086     
00088     inline SolverName GetAPI() const {
00089         if (!solver)
00090             return NONE;
00091         return apiSolver;
00092     }
00093 
00095     inline const char * GetfLP() const {
00096         return fileLP.c_str();
00097     }
00099     inline void SetfLP(const std::string& flp) {
00100         fileLP = flp;
00101     }
00102 
00103     //
00104     // On retourne des références car ceci sera utilisé dans Model
00105     // Et SolverAPI existe tant que Model existe !
00106     //
00107   public:
00108     inline std::list<float>      & OutNumVarValues    ()     {return solution.variablesVAL;}
00109     inline std::list<std::string>& GetNumVarNames     ()     {return solution.variablesNOM;}
00110     inline std::list<float>      & OutConstraintValues()     {return solution.contraintesVAL;}
00111     inline std::list<std::string>& GetConstraintNames ()     {return solution.contraintesNOM;}
00112     inline std::string             & GetObjectiveNames  ()     {return solution.objective.first;}
00113     inline float                     GetObjectiveValue  ()     {return solution.objective.second;}
00114 
00115     //
00116     // Interfaces des solveurs
00117     //
00118   public:
00119     inline bool  AddOption(const std::string& opt)               {solver->AddOption(opt); return true;}
00120     inline void  RemoveOption(const std::string& opt="zzERall")  {solver->RemoveOption(opt);}
00121     inline float Solve()                                         {return solver->Solve(solution,fileLP);}
00122 
00123     inline void  Infos(std::string& op, std::string& info) {
00124         return solver->Infos(op,info);
00125     }
00126 
00127     // Résultats
00128     inline bool IsSolved()  const {return solver->Solved(); }
00129     inline bool IsOptimal() const {return solver->Optimal();}
00130 
00131 
00132     //
00133     // Compatibilités antérieures
00134     //
00135   public:
00136     inline void Options(const std::string& opt) {solver->AddOption(opt);}
00137     inline void RemoveOptions()  {solver->RemoveOption("zzERall");}
00138 
00139     inline void SetMIP(bool isMIP) {solver->SetMIP(isMIP);}
00140 
00141     //inline std::list<float>      & OutNumVarValues    ()     {return solution.variablesVAL;}
00142     inline std::list<std::string>& GetNumVarNoms      ()     {return solution.variablesNOM;}
00143     //inline std::list<float>      & OutConstraintValues()     {return solution.contraintesVAL;}
00144     inline std::list<std::string>& GetConstraintNoms  ()     {return solution.contraintesNOM;}
00145 };
00146 
00147 }
00148 
00149 #endif

Généré le Sun Oct 2 19:13:11 2005 pour Modelib par  doxygen 1.4.4