Modelib: Fichier source de SolverAPI.cpp

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# SolverAPI.cpp

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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 #include "Model.h"
    00033 #include "Utils.h"
    00034 #include "System.h"
    00035
    00036 // Les différents solveurs implémentés
    00037 #include "GlpkSolver.h"
    00038 #include "CplexSolver.h"
    00039
    00040 #include <iostream>
    00041 #include <stdexcept>
    00042
    00043 namespace Modelib {
    00044
    00045
    00046 using namespace std;
    00047
    00051 void SolverAPI::AllocSolver(const SolverName api)
    00052 {
    00053     switch(api)
    00054     {
    00055         case GLPK|GLPSOL:
    00056             solver = new GlpkSolver();
    00057             break;
    00058
    00059         case CPLEX:
    00060             solver = new CplexSolver();
    00061             break;
    00062
    00063         default:
    00064             solver = 0;
    00065             throw "(SolverAPI::AllocSolver) - Allocation impossible, solveur inconnu";
    00066             break;
    00067     }
    00068 }
    00069
    00070
    00076 SolverAPI::SolverAPI(const SolverName api)
    00077   : apiSolver(api), solver(0)
    00078 {
    00079     fileLP = "temp.lp";
    00080     try {
    00081         AllocSolver(api);
    00082     }
    00083     catch (string& e) {
    00084         cout << e << endl;
    00085     }
    00086 }
    00087
    00091 SolverAPI::~SolverAPI()
    00092 {
    00093     if (solver) delete solver;
    00094 }
    00095
    00102 void SolverAPI::Init(const std::string& tempFile, const std::string& _path)
    00103 {
    00104     assert(solver);
    00105     fileLP = tempFile;
    00106     path   = _path;
    00107 }
    00108
    00117 void SolverAPI::Init(const SolverName api, const std::string& tempFile, const std::string& _path)
    00118 {
    00119     SetAPI(api);
    00120     fileLP = tempFile;
    00121     path   = _path;
    00122 }
    00123
    00127 void SolverAPI::SetAPI(const SolverName api)
    00128 {
    00129     solution.Clear();
    00130     if (apiSolver != api)
    00131     {
    00132         apiSolver = api;
    00133         delete solver;
    00134         try {
    00135             AllocSolver(api);
    00136         }
    00137         catch (string& e)
    00138         {
    00139             cout << e << endl;
    00140         }
    00141     }
    00142 }
    00143
    00144 }