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>

Iterator that filters results by type.

Field Summary

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

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

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

Method Summary

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

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