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

Constructors

Constructor and Description
LazyIteratorChain(java.util.Iterator<java.util.Iterator<T>> iterators)
LazyIteratorChain(java.util.Iterator<T>... iterators)

Method Summary

Modifier and Type	Method and Description
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

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

Methods inherited from interface java.util.Iterator

forEachRemaining

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>