org.rapla.components.util.iterator
Class NestedIterator

java.lang.Object
  org.rapla.components.util.iterator.NestedIterator

All Implemented Interfaces:

Iterator

public abstract class NestedIterator
extends Object
implements Iterator

Successivly iterates over the elements specified in the nested Iterators. Example of an recursive traversal of an Entity Tree:

class RecursiveEntityIterator extends NestedIterator {
    public RecursiveEntityIterator(Iterator it) {
        super(it);
    }
    public Iterator getNestedIterator(Object obj) {
        return new RecursiveEntityIterator(((Entity)obj).getSubEntities());
    }
}

Field Summary

protected Iterator	innerIt
protected Iterator	outerIt

Constructor Summary

NestedIterator(Iterator outerIt)

Method Summary

abstract Iterator	getNestedIterator(Object obj)
boolean	hasNext()
Object	next()
void	remove()

Methods inherited from class java.lang.Object

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

Field Detail

outerIt

protected Iterator outerIt

innerIt

protected Iterator innerIt

Constructor Detail

NestedIterator

public NestedIterator(Iterator outerIt)

Method Detail

getNestedIterator

public abstract Iterator getNestedIterator(Object obj)

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator

remove

public void remove()

Specified by:

remove in interface Iterator

next

public Object next()

Specified by:

next in interface Iterator