ConstraintOH.h

// ConstraintOH.h -- The super class of all the constraint ordering heuristics.

/*
 * Copyright (C) 1998,2004 Tudor Hulubei <tudor@hulubei.net>.
 *
 * 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, 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.
 */

/*
 * NOTE: This is an interal header file.
 * You should not attempt to use it directly.
 */

// $Id: ConstraintOH_8h-source.html,v 1.1 2005/05/25 12:37:18 tudor Exp $

#ifndef _CSP_KERNEL_ConstraintOH_H
#define _CSP_KERNEL_ConstraintOH_H


CSP_NAMESPACE_BEGIN(csp);


class CSP_API ConstraintOH :
    public OrderingHeuristic
{
  public:
    ConstraintOH(
        const wstring& name,
        Decomposition& decomposition,
        const vector<pair<double, double> >& intervals,
        double quality = 1) :
        OrderingHeuristic(name, decomposition, intervals, quality) {}

    virtual ~ConstraintOH() {}

    virtual void init(const vlist_type& /*uninstantiatedVariables*/) {}

    virtual void done() {}

    virtual void select(clist_type& selectable, clist_type& selected) = 0;

    virtual wostream& print(wostream& wos) const
    {
        return OrderingHeuristic::print(wos);
    }

    friend CSP_API wostream& operator<<(
        wostream& wos, const ConstraintOH& constraintOH)
    {
        return constraintOH.print(wos);
    }

  private:
    ConstraintOH(const ConstraintOH&);

    ConstraintOH& operator=(const ConstraintOH&);
};


CSP_NAMESPACE_END(csp);


#endif // _CSP_KERNEL_ConstraintOH_H

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