edu.cmu.cs.coral.icf.plan_based.planners.pip
Class NodeExpansionChoiceIterator

java.lang.Object
  |
  +--edu.cmu.cs.coral.icf.plan_based.planners.pip.NodeExpansionChoiceIterator

public class NodeExpansionChoiceIterator

extends java.lang.Object

implements java.util.Iterator

Represents an iterator over node expansion choices which are generated on the fly.

Since:

ICF 0.0

Version:

$Id$

Field Summary

private java.util.Iterator

nodes the list of plan nodes that can be expanded

Constructor Summary

NodeExpansionChoiceIterator(java.util.Iterator nodes)
Generates a new iterator over the possible choices of node to expand out of the given nodes.

NodeExpansionChoiceIterator(PlanNode node)
Generates a new iterator containing the single node given

Method Summary

boolean	hasNext() Checks if there is a next element from this iterator.
java.lang.Object	next() Gets the next element from this iterator.
void	remove() Removes this element from the iterator's backing store.

Methods inherited from class java.lang.Object

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

Field Detail

nodes

private java.util.Iterator nodes

the list of plan nodes that can be expanded

Since:

ICF 0.0

Constructor Detail

NodeExpansionChoiceIterator

public NodeExpansionChoiceIterator(PlanNode node)

Generates a new iterator containing the single node given

Parameters:

nodes - the node to expand

Since:

ICF 0.0

NodeExpansionChoiceIterator

public NodeExpansionChoiceIterator(java.util.Iterator nodes)

Generates a new iterator over the possible choices of node to expand out of the given nodes.

Parameters:

nodes - the nodes to consider expanding

Since:

ICF 0.0

Method Detail

hasNext

public boolean hasNext()

Checks if there is a next element from this iterator.

Specified by:

hasNext in interface java.util.Iterator

Returns:

true if and only if this iterator has another element

Since:

ICF 0.0

next

public java.lang.Object next()

Gets the next element from this iterator.

Specified by:

next in interface java.util.Iterator

Returns:

the next element of this iterator

Since:

ICF 0.0

remove

public void remove()
            throws java.lang.UnsupportedOperationException

Removes this element from the iterator's backing store.

Specified by:

remove in interface java.util.Iterator

Throws:

java.lang.UnsupportedOperationException - always

Since:

ICF 0.0