org.apache.calcite.util

Class Filterator<E>

java.lang.Object

org.apache.calcite.util.Filterator<E>

Type Parameters:

E - Element type

All Implemented Interfaces:

Iterator<E>

public class Filterator<E>
extends Object
implements Iterator<E>

Filtered iterator class: an iterator that includes only elements that are instanceof a specified class.

Apologies for the dorky name.

See Also:

Util.cast(java.util.List, Class), Util.cast(Iterator, Class)

Field Summary

Fields

Modifier and Type	Field and Description
(package private) Class<E>	includeFilter
(package private) Iterator<? extends Object>	iterator
(package private) E	lookAhead
(package private) boolean	ready

Constructor Summary

Constructors

Constructor and Description
Filterator(Iterator<?> iterator, Class<E> includeFilter)

Method Summary

Modifier and Type	Method and Description
boolean	hasNext()
E	next()
void	remove()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

includeFilter

Class<E> includeFilter

iterator

Iterator<? extends Object> iterator

lookAhead

E lookAhead

ready

boolean ready

Constructor Detail

Filterator

public Filterator(Iterator<?> iterator,
                  Class<E> includeFilter)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<E>

next

public E next()

Specified by:

next in interface Iterator<E>

remove

public void remove()

Specified by:

remove in interface Iterator<E>