org.apache.sshd.common.util.helper

Class LazyMatchingTypeIterator<T>

java.lang.Object

org.apache.sshd.common.util.helper.LazyMatchingTypeIterator<T>

Type Parameters:

T - Type of iterated element

All Implemented Interfaces:

Iterator<T>

public class LazyMatchingTypeIterator<T>
extends Object
implements Iterator<T>

An Iterator that selects only objects of a certain type from the underlying available ones. The "lazy" denomination is due to the fact that selection occurs only when hasNext() is called

Author:

Apache MINA SSHD Project

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	finished
protected T	nextValue

Constructor Summary

Constructors

Constructor and Description
LazyMatchingTypeIterator(Iterator<?> values, Class<T> type)

Method Summary

Modifier and Type	Method and Description
Class<T>	getType()
Iterator<?>	getValues()
boolean	hasNext()
static <T> Iterator<T>	lazySelectMatchingTypes(Iterator<?> values, Class<T> type)
T	next()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Field Detail

finished

protected boolean finished

nextValue

protected T nextValue

Constructor Detail

LazyMatchingTypeIterator

public LazyMatchingTypeIterator(Iterator<?> values,
                                Class<T> type)

Method Detail

getValues

public Iterator<?> getValues()

getType

public Class<T> getType()

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public T next()

Specified by:

next in interface Iterator<T>

toString

public String toString()

Overrides:

toString in class Object

lazySelectMatchingTypes

public static <T> Iterator<T> lazySelectMatchingTypes(Iterator<?> values,
                                                      Class<T> type)

Type Parameters:

T - Type if iterated element

Parameters:

values - The source values - ignored if null

type - The (never @code null) type of values to select - any value whose type is assignable to this type will be selected by the iterator.

Returns:

An Iterator whose next() call selects only values matching the specific type. Note: the matching values are not pre-calculated (hence the "lazy" denomination) - i.e., the match is performed only when Iterator.hasNext() is called.