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org.hibernate.util
Class JoinedIterator  

java.lang.Object
  org.hibernate.util.JoinedIterator

All Implemented Interfaces:

java.util.Iterator

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public class JoinedIterator

extends java.lang.Object

implements java.util.Iterator

An JoinedIterator is an Iterator that wraps a number of Iterators. This class makes multiple iterators look like one to the caller. When any method from the Iterator interface is called, the JoinedIterator will delegate to a single underlying Iterator. The JoinedIterator will invoke the Iterators in sequence until all Iterators are exhausted.

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Field Summary
private  java.util.Iterator	currentIterator
private  int	currentIteratorIndex
private  java.util.Iterator[]	iterators
private static java.util.Iterator[]	ITERATORS
private  java.util.Iterator	lastUsedIterator

 

Constructor Summary

JoinedIterator(java.util.Iterator[] iterators)

JoinedIterator(java.util.Iterator first, java.util.Iterator second)

JoinedIterator(java.util.List iterators)

 

Method Summary
boolean	hasNext()           Tests whether there are elements remaining in the collection.
java.lang.Object	next()           Obtain the next element in the collection.
void	remove()           Remove from the underlying collection the last element returned by next (optional operation).
protected  void	updateCurrentIterator()

 

Methods inherited from class java.lang.Object

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

 

Field Detail

ITERATORS

private static final java.util.Iterator[] ITERATORS

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iterators

private java.util.Iterator[] iterators

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currentIteratorIndex

private int currentIteratorIndex

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currentIterator

private java.util.Iterator currentIterator

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lastUsedIterator

private java.util.Iterator lastUsedIterator

Constructor Detail

JoinedIterator

public JoinedIterator(java.util.List iterators)

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JoinedIterator

public JoinedIterator(java.util.Iterator[] iterators)

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JoinedIterator

public JoinedIterator(java.util.Iterator first,
                      java.util.Iterator second)

Method Detail

hasNext

public boolean hasNext()

Description copied from interface: java.util.Iterator

Tests whether there are elements remaining in the collection. In other words, calling next() will not throw an exception.

Specified by:

hasNext in interface java.util.Iterator

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next

public java.lang.Object next()

Description copied from interface: java.util.Iterator

Obtain the next element in the collection.

Specified by:

next in interface java.util.Iterator

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remove

public void remove()

Description copied from interface: java.util.Iterator

Remove from the underlying collection the last element returned by next (optional operation). This method can be called only once after each call to next(). It does not affect what will be returned by subsequent calls to next.

Specified by:

remove in interface java.util.Iterator

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updateCurrentIterator

protected void updateCurrentIterator()

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