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com.sun.enterprise.module.common_impl

public abstract Class AdapterIterator<T, U>

extends Object
implements Iterator<T>
Class Inheritance
All Implemented Interfaces
java.util.Iterator
Imports
java.util.Iterator
Iterator implementation that works as a filter to another iterator.
Author
Kohsuke Kawaguchi

Field Summary

Modifier and TypeField and Description
private final Iterator<? extends U>
core

private T
next

Constructor Summary

AccessConstructor and Description
public
AdapterIterator(Iterator<? extends U> core)

Method Summary

Modifier and TypeMethod and Description
protected abstract T
adapt(U u)

Returns: null to filter out this object.

private void
fetch()

public boolean
hasNext()

Implements java.util.Iterator.hasNext.

Returns true if the iteration has more elements.

public T
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).

Inherited from java.lang.Object:
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Field Detail

coreback to summary
private final Iterator<? extends U> core
nextback to summary
private T next

Constructor Detail

AdapterIteratorback to summary
public AdapterIterator(Iterator<? extends U> core)

Method Detail

adaptback to summary
protected abstract T adapt(U u)
Returns:T

null to filter out this object. Non-null object will be returned from the iterator to the caller.

fetchback to summary
private void fetch()
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.)

nextback to summary
public T next()

Implements java.util.Iterator.next.

Doc from java.util.Iterator.next.

Returns 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.