org.cpsolver.ifs.model

Interface WeakeningConstraint<V extends Variable<V,T>,T extends Value<V,T>>

Type Parameters:

V - Variable

T - Value

All Known Implementing Classes:

DepartmentSpreadConstraint, DiscouragedRoomConstraint, JenrlConstraint, MaxBreaksFlexibleConstraint, MaxHolesFlexibleConstraint, MinimizeNumberOfUsedGroupsOfTime, MinimizeNumberOfUsedRoomsConstraint, SpreadConstraint

public interface WeakeningConstraint<V extends Variable<V,T>,T extends Value<V,T>>

Interface of a constraint that weakens with the time.

Version:

CourseTT 1.3 (University Course Timetabling)
Copyright (C) 2006 - 2014 Tomáš Müller
muller@unitime.org
http://muller.unitime.org

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 3 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 see http://www.gnu.org/licenses/.

Author:

Tomáš Müller

Method Summary

Modifier and Type	Method and Description
void	weaken(Assignment<V,T> assignment) Weaken the constraint.
void	weaken(Assignment<V,T> assignment, T value) Weaken the constraint enough so that it can assign the given value.

Method Detail

weaken

void weaken(Assignment<V,T> assignment)

Weaken the constraint. This method is called if the constraint participates in an unassigned of a variable.

Parameters:

assignment - current assignment

weaken

void weaken(Assignment<V,T> assignment,
            T value)

Weaken the constraint enough so that it can assign the given value.

Parameters:

assignment - current assignment

value - a conflicting value to be assigned