org.elasticsearch.util.collect
Class ForwardingIterator<T>

java.lang.Object
  org.elasticsearch.util.collect.ForwardingObject
      org.elasticsearch.util.collect.ForwardingIterator<T>

All Implemented Interfaces:

java.util.Iterator<T>

Direct Known Subclasses:

ForwardingListIterator

public abstract class ForwardingIterator<T>
extends ForwardingObject
implements java.util.Iterator<T>

An iterator which forwards all its method calls to another iterator. Subclasses should override one or more methods to modify the behavior of the backing iterator as desired per the decorator pattern.

See Also:

ForwardingObject

Constructor Summary

ForwardingIterator()

Method Summary

protected abstract java.util.Iterator<T>	delegate() Returns the backing delegate instance that methods are forwarded to.
boolean	hasNext()
T	next()
void	remove()

Methods inherited from class org.elasticsearch.util.collect.ForwardingObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ForwardingIterator

public ForwardingIterator()

Method Detail

delegate

protected abstract java.util.Iterator<T> delegate()

Description copied from class: ForwardingObject

Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such as ForwardingSet.delegate(). Concrete subclasses override this method to supply the instance being decorated.

Specified by:

delegate in class ForwardingObject

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<T>

next

public T next()

Specified by:

next in interface java.util.Iterator<T>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<T>