net.sf.cpsolver.ifs.model
Interface ConstraintListener

All Known Implementing Classes:

ConflictStatistics, StudentConflictStatistics

public interface ConstraintListener

IFS constraint listener.

Version:

IFS 1.1 (Iterative Forward Search)
Copyright (C) 2006 Tomáš Müller
muller@unitime.org
Lazenska 391, 76314 Zlin, Czech Republic

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 2.1 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

See Also:

Constraint

Method Summary

void	constraintAfterAssigned(long iteration, Constraint constraint, Value assigned, Set unassigned) Called by the constraint, after a value is assigned to its variable.
void	constraintBeforeAssigned(long iteration, Constraint constraint, Value assigned, Set unassigned) Called by the constraint, before a value is assigned to its variable.

Method Detail

constraintBeforeAssigned

void constraintBeforeAssigned(long iteration,
                              Constraint constraint,
                              Value assigned,
                              Set unassigned)

Called by the constraint, before a value is assigned to its variable.

Parameters:

iteration - current iteration

constraint - source constraint

assigned - value which will be assigned to its variable (Value.variable())

unassigned - set of conflicting values which will be unassigned by the constraint before it assigns the given value

constraintAfterAssigned

void constraintAfterAssigned(long iteration,
                             Constraint constraint,
                             Value assigned,
                             Set unassigned)

Called by the constraint, after a value is assigned to its variable.

Parameters:

iteration - current iteration

constraint - source constraint

assigned - value which was assigned to its variable (Value.variable())

unassigned - set of conflicting values which were unassigned by the constraint before it assigned the given value