org.apache.jackrabbit.commons.iterator
Class LazyIteratorChain<T>

java.lang.Object
  org.apache.jackrabbit.commons.iterator.LazyIteratorChain<T>

Type Parameters:

T - type of values iterating over

All Implemented Interfaces:

java.util.Iterator<T>

public class LazyIteratorChain<T>
extends java.lang.Object
implements java.util.Iterator<T>

This class implements the concatenation of iterators. The implementation is lazy in the sense that advancing of any iterator is deferred as much as possible. Specifically no iterator is fully unwrapped at one single point of time.

Constructor Summary

LazyIteratorChain(java.util.Iterator<java.util.Iterator<T>> iterators)

LazyIteratorChain(java.util.Iterator<T>... iterators)

Method Summary

static <T> java.util.Iterator<T>	chain(java.util.Iterator<java.util.Iterator<T>> iterators) Returns the concatenation of all iterators in iterators.
static <T> java.util.Iterator<T>	chain(java.util.Iterator<T>... iterators) Returns the concatenation of all iterators in iterators.
boolean	hasNext()
T	next()
void	remove()

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyIteratorChain

public LazyIteratorChain(java.util.Iterator<java.util.Iterator<T>> iterators)

LazyIteratorChain

public LazyIteratorChain(java.util.Iterator<T>... iterators)

Method Detail

chain

public static <T> java.util.Iterator<T> chain(java.util.Iterator<java.util.Iterator<T>> iterators)

Returns the concatenation of all iterators in iterators.

Type Parameters:

T -

Parameters:

iterators -

Returns:

chain

public static <T> java.util.Iterator<T> chain(java.util.Iterator<T>... iterators)

Returns the concatenation of all iterators in iterators.

Type Parameters:

T -

Parameters:

iterators -

Returns:

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>