de.lmu.ifi.dbs.elki.utilities.iterator

Class TypeFilterIterator<IN,OUT extends IN>

java.lang.Object

de.lmu.ifi.dbs.elki.utilities.iterator.AbstractFilteredIterator<IN,OUT>

de.lmu.ifi.dbs.elki.utilities.iterator.TypeFilterIterator<IN,OUT>

Type Parameters:

IN - Input datatype

OUT - Output datatype

All Implemented Interfaces:

Iterator<OUT>

public class TypeFilterIterator<IN,OUT extends IN>
extends AbstractFilteredIterator<IN,OUT>
implements Iterator<OUT>

Iterator that filters results by type.

Field Summary

Fields

Modifier and Type	Field and Description
private Class<? super OUT>	filterClass Class restriction
private Iterator<IN>	parent Parent iterator

Fields inherited from class de.lmu.ifi.dbs.elki.utilities.iterator.AbstractFilteredIterator

itr, nextobj

Constructor Summary

Constructors

Constructor and Description
TypeFilterIterator(Class<? super OUT> filterClass, Iterable<IN> parent) Constructor.
TypeFilterIterator(Class<? super OUT> filterClass, Iterator<IN> parent) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected Iterator<IN>	getParentIterator() Get an iterator for the actual data.
protected OUT	testFilter(IN nextobj) Test the filter predicate for a new object.

Methods inherited from class de.lmu.ifi.dbs.elki.utilities.iterator.AbstractFilteredIterator

hasNext, init, next, 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

hasNext, next, remove

Field Detail

filterClass

private Class<? super OUT extends IN> filterClass

Class restriction

parent

private Iterator<IN> parent

Parent iterator

Constructor Detail

TypeFilterIterator

public TypeFilterIterator(Class<? super OUT> filterClass,
                  Iterable<IN> parent)

Constructor.

Parameters:

filterClass - Filter

parent - Parent collection

TypeFilterIterator

public TypeFilterIterator(Class<? super OUT> filterClass,
                  Iterator<IN> parent)

Constructor.

Parameters:

filterClass - Filter

parent - Parent iterator

Method Detail

getParentIterator

protected Iterator<IN> getParentIterator()

Description copied from class: AbstractFilteredIterator

Get an iterator for the actual data. Used in initialization.

Specified by:

getParentIterator in class AbstractFilteredIterator<IN,OUT extends IN>

Returns:

iterator

testFilter

protected OUT testFilter(IN nextobj)

Description copied from class: AbstractFilteredIterator

Test the filter predicate for a new object.

Specified by:

testFilter in class AbstractFilteredIterator<IN,OUT extends IN>

Parameters:

nextobj - Object to test

Returns:

cast object when true, null otherwise