Package nl.vpro.util

Class WrappedIterator<T,S>

java.lang.Object

nl.vpro.util.WrappedIterator<T,S>

All Implemented Interfaces:

AutoCloseable, Iterator<S>, CloseableIterator<S>, Counted, CountedIterator<S>

Direct Known Subclasses:

BasicWrappedIterator

public abstract class WrappedIterator<T,S>
extends Object
implements CountedIterator<S>

Since:

1.3

Author:

Michiel Meeuwissen

Nested Class Summary

Nested classes/interfaces inherited from interface nl.vpro.util.CloseableIterator

CloseableIterator.WrappedCloseableIterator<S>, CloseableIterator.WrappedPeekingCloseableIterator<S>

Field Summary

Fields

Modifier and Type	Field	Description
protected CloseableIterator<T>	wrapped

Constructor Summary

Constructors

Constructor	Description
WrappedIterator(Iterator<T> wrapped)

Method Summary

Modifier and Type	Method	Description
void	close()
Long	getCount()	The current position.
@NonNull Optional<Long>	getSize()	The size, if known, of the collection this iterator is representing
@NonNull Optional<Long>	getTotalSize()	If the iterator is in some way restricted you may also want to report a total size, representing the unrestricted size.
boolean	hasNext()
protected Iterator<T>	iterator()
abstract S	next()
void	remove()
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface nl.vpro.util.CountedIterator

peeking, spliterator, stream

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

wrapped

protected final CloseableIterator<T> wrapped

Constructor Detail

WrappedIterator

public WrappedIterator(Iterator<T> wrapped)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<T>

next

public abstract S next()

Specified by:

next in interface Iterator<T>

remove

public void remove()

Specified by:

remove in interface Iterator<T>

iterator

protected Iterator<T> iterator()

getSize

public @NonNull Optional<Long> getSize()

Description copied from interface: CountedIterator

The size, if known, of the collection this iterator is representing

Specified by:

getSize in interface CountedIterator<T>

getCount

public Long getCount()

Description copied from interface: CountedIterator

The current position. Will return 1 after first successfull call to Iterator.next(), 2 after the second one, and so on. It will return 0 before the first call.

Specified by:

getCount in interface Counted

Specified by:

getCount in interface CountedIterator<T>

getTotalSize

public @NonNull Optional<Long> getTotalSize()

Description copied from interface: CountedIterator

If the iterator is in some way restricted you may also want to report a total size, representing the unrestricted size.

The default implementation is CountedIterator.getSize().

Specified by:

getTotalSize in interface CountedIterator<T>

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Specified by:

close in interface CountedIterator<T>

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object