Top Description Fields Constructors Methods
com.mchange.v1.util

public abstract Class WrapperIterator

extends Object
implements Iterator
Class Inheritance
All Implemented Interfaces
java.util.Iterator
Imports
java.util.*, com.mchange.v1.util.DebugUtils

This implementation does not yet support removes once hasNext() has been called... will add if necessary.

Field Summary

Modifier and TypeField and Description
pack-priv static final boolean
pack-priv Iterator<E>
pack-priv Object
pack-priv Object
protected static final Object
pack-priv boolean

Constructor Summary

AccessConstructor and Description
public
WrapperIterator(Iterator<E> inner, boolean supports_remove)

public

Method Summary

Modifier and TypeMethod and Description
private void
public boolean
hasNext()

Implements java.util.Iterator.hasNext.

Returns true if the iteration has more elements.

public Object
next()

Implements java.util.Iterator.next.

Returns the next element in the iteration.

public void
remove()

Overrides default java.util.Iterator.remove.

Removes from the underlying collection the last element returned by this iterator (optional operation).

protected abstract Object
transformObject(Object o)

return SKIP_TOKEN to indicate an object should be skipped, i.e., not exposed as part of the iterator.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

DEBUGback to summary
pack-priv static final boolean DEBUG
innerback to summary
pack-priv Iterator<E> inner
lastOutback to summary
pack-priv Object lastOut
nextOutback to summary
pack-priv Object nextOut
SKIP_TOKENback to summary
protected static final Object SKIP_TOKEN
supports_removeback to summary
pack-priv boolean supports_remove

Constructor Detail

WrapperIteratorback to summary
public WrapperIterator(Iterator<E> inner, boolean supports_remove)
WrapperIteratorback to summary
public WrapperIterator(Iterator<E> inner)

Method Detail

findNextback to summary
private void findNext()
hasNextback to summary
public boolean hasNext()

Implements java.util.Iterator.hasNext.

Doc from java.util.Iterator.hasNext.

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Returns:boolean

true if the iteration has more elements

nextback to summary
public Object next()

Implements java.util.Iterator.next.

Doc from java.util.Iterator.next.

Returns the next element in the iteration.

Returns:Object

the next element in the iteration

removeback to summary
public void remove()

Overrides default java.util.Iterator.remove.

Doc from java.util.Iterator.remove.

Removes from the underlying collection the last element returned by this iterator (optional operation). This method can be called only once per call to next.

The behavior of an iterator is unspecified if the underlying collection is modified while the iteration is in progress in any way other than by calling this method, unless an overriding class has specified a concurrent modification policy.

The behavior of an iterator is unspecified if this method is called after a call to the forEachRemaining method.

transformObjectback to summary
protected abstract Object transformObject(Object o)

return SKIP_TOKEN to indicate an object should be skipped, i.e., not exposed as part of the iterator. (we don't use null, because we want to support iterators over null-accepting Collections.)