omnics.constraint
Class ConstantSum

java.lang.Object
  omnics.Constraint
      omnics.constraint.ConstantSum

All Implemented Interfaces:

java.io.Serializable

public class ConstantSum
extends Constraint

Author:

Cristian Frasinaru x1 + x2 + ... + x_k = sum

See Also:

Serialized Form

Field Summary

Fields inherited from class omnics.Constraint

ALLOWED, filter, FORBIDDEN, MAX, MIN, name, problem, variables

Constructor Summary

ConstantSum(IntVar[] variables, int sum)
Creates a new instance of ConstantSum

Method Summary

int	eval(Tuple tuple) Evaluates a tuple.

Methods inherited from class omnics.Constraint

eval, eval, getFilter, getName, getProblem, getTuples, getVarArray, getVariables, setFilter, setName, setVariables, setVariables, toString, variable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ConstantSum

public ConstantSum(IntVar[] variables,
                   int sum)

Creates a new instance of ConstantSum

Method Detail

eval

public int eval(Tuple tuple)

Description copied from class: Constraint

Evaluates a tuple. The result of the evaluation could be:

MIN or ALLOWED: the tuple is good satisfies the constraint and can be part of a solution
• MAX or FORBIDDEN: the tuple is not good, cannot be part of a solution
• a value in the interval (MIN,MAX): a penalty implied by this tuple if it is used in a solution (in case of soft constraints)

Constants MIN, MAX, ALLOWED, FORBIDDEN are defined in ValuationStructure

Specified by:

eval in class Constraint

Parameters:

tuple - some tuple

Returns:

a value between ValuationStructure.MIN and ValuationStructure.MAX.

See Also:

Constraint.eval(Tuple), ValuationStructure