org.jscience.computing.ai.planning
Class PreconditionNegation

java.lang.Object
  org.jscience.computing.ai.planning.Precondition
      org.jscience.computing.ai.planning.PreconditionNegation

public class PreconditionNegation
extends Precondition

This class represents an iterator over all the possible bindings that can satisfy a negation logical expression at run time. Note that in this case there is at most one such binding, and that is the empty binding.

Constructor Summary

PreconditionNegation(Precondition pIn, int vars)
To initialize this negation logical expression.

Method Summary

void	bind(Term[] binding) To bind the negation logical expression to some binding.
protected Term[]	nextBindingHelper() To return the next satisfier for this negation logical expression.
protected void	resetHelper() To reset this negation logical expression.

Methods inherited from class org.jscience.computing.ai.planning.Precondition

nextBinding, reset, setComparator, setFirst

Methods inherited from class java.lang.Object

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

Constructor Detail

PreconditionNegation

public PreconditionNegation(Precondition pIn,
                            int vars)

To initialize this negation logical expression.

Parameters:

pIn - the logical expression the negation of which this object represents.

vars - the number of variables this logical expression has. This is used to return a binding of the appropriate size.

Method Detail

bind

public void bind(Term[] binding)

To bind the negation logical expression to some binding.

Specified by:

bind in class Precondition

Parameters:

binding - DOCUMENT ME!

nextBindingHelper

protected Term[] nextBindingHelper()

To return the next satisfier for this negation logical expression.

Specified by:

nextBindingHelper in class Precondition

Returns:

DOCUMENT ME!

resetHelper

protected void resetHelper()

To reset this negation logical expression.

Specified by:

resetHelper in class Precondition