Problem.h

/* 
 * File:   Problem.h
 * 
 * Copyright 2012 Heinrich Schuchardt <xypron.glpk@gmx.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef PROBLEM_H
#define PROBLEM_H

#include "TermComperator.h"
#include <set>
#include <vector>
#include <iostream>
#include <cstring>

typedef std::set<Term*, TermComperator > TermSet;
typedef std::set<TermVariable*, TermComperator > VariableSet;

class Problem {
public:
    Problem();
    virtual ~Problem();
    Term* setObjectiveFunction(Term* term);
    Term* getObjectiveFunction();
    Term* addTerm(Term* term);
    TermVariable* addVariable(TermVariable* variable);
    TermPointerVector *getGradient();
    TermPointerVector *getHessian();
    TermVariablePointerVector *getVariables();
    bool gradient(const DoubleVector* values, 
      DoubleVector** gradient);
    bool hessian(const DoubleVector* values, 
      DoubleVector** hessian);
    size_t numberOfTerms();
    size_t numberOfVariables();
    bool objective(const DoubleVector* values, 
      double* obj);
private:
    Problem(const Problem&);
    Term* objectiveFunction_;
    TermPointerVector* gradient_;
    TermPointerVector* hessian_;
    bool prepareGradient();
    bool prepareHessian();
    bool prepareVariables();
    TermVariablePointerVector* variables_;
    TermSet* terms;
    VariableSet* variablesSet_;
};

#endif  /* PROBLEM_H */