omnics.constraint
Class ExplicitConstraint

java.lang.Object
  omnics.Constraint
      omnics.constraint.ExplicitConstraint

All Implemented Interfaces:

java.io.Serializable

public class ExplicitConstraint
extends Constraint

Author:

Cristian Frasinaru

See Also:

Serialized Form

Field Summary

Fields inherited from class omnics.Constraint

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

Constructor Summary

ExplicitConstraint()
Creates a new instance of ExplicitConstraint

ExplicitConstraint(java.lang.String name, VarSet variables, java.lang.Object[][] values)
Creates a new instance of ExplicitConstraint

ExplicitConstraint(VarSet variables, java.lang.Object[][] values)
Creates a new instance of ExplicitConstraint

Method Summary

boolean	add(Tuple tuple)
boolean	contains(Tuple tuple) Tests if the tuple is
int	eval(Tuple tuple) Evaluates a tuple.
TupleSet	getTuples() Creates and returns a set containing all the tuples that satisfy this constraint.
void	join(TupleSet otherTuples)
boolean	remove(Tuple tuple)
void	setTuples(TupleSet tuples)
java.lang.String	toString() Returns a string representation of the constraint.

Methods inherited from class omnics.Constraint

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ExplicitConstraint

public ExplicitConstraint()

Creates a new instance of ExplicitConstraint

ExplicitConstraint

public ExplicitConstraint(VarSet variables,
                          java.lang.Object[][] values)

Creates a new instance of ExplicitConstraint

ExplicitConstraint

public ExplicitConstraint(java.lang.String name,
                          VarSet variables,
                          java.lang.Object[][] values)

Creates a new instance of ExplicitConstraint

Method Detail

getTuples

public TupleSet getTuples()

Description copied from class: Constraint

Creates and returns a set containing all the tuples that satisfy this constraint.

Warning: if the constrained is not an explicit constraint

Overrides:

getTuples in class Constraint

Returns:

all the tuples that satisfy this constraint.

setTuples

public void setTuples(TupleSet tuples)

add

public boolean add(Tuple tuple)

remove

public boolean remove(Tuple tuple)

contains

public boolean contains(Tuple tuple)

Tests if the tuple is

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

join

public void join(TupleSet otherTuples)

toString

public java.lang.String toString()

Description copied from class: Constraint

Returns a string representation of the constraint. It actually returns the name of the constraint. If the constraint has not been given an explicit name, it's name is: getClass().getName() + "(" + variables + ")"

Overrides:

toString in class Constraint

Returns:

a string representation of the constraint