net.floodlightcontroller.util
Class FilterIterator<T>

java.lang.Object
  net.floodlightcontroller.util.FilterIterator<T>

All Implemented Interfaces:

java.util.Iterator<T>

Direct Known Subclasses:

DeviceIterator

public abstract class FilterIterator<T>
extends java.lang.Object
implements java.util.Iterator<T>

An iterator that will filter values from an iterator and return only those values that match the predicate.

Field Summary

protected T	next
protected java.util.Iterator<T>	subIterator

Constructor Summary

FilterIterator(java.util.Iterator<T> subIterator)
Construct a filter iterator from the given sub iterator

Method Summary

boolean	hasNext()
protected abstract boolean	matches(T value) Check whether the given value should be returned by the filter
T	next()
void	remove()

Methods inherited from class java.lang.Object

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

Field Detail

subIterator

protected java.util.Iterator<T> subIterator

next

protected T next

Constructor Detail

FilterIterator

public FilterIterator(java.util.Iterator<T> subIterator)

Construct a filter iterator from the given sub iterator

Parameters:

subIterator - the sub iterator over which we'll filter

Method Detail

matches

protected abstract boolean matches(T value)

Check whether the given value should be returned by the filter

Parameters:

value - the value to check

Returns:

true if the value should be included

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<T>

next

public T next()

Specified by:

next in interface java.util.Iterator<T>

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<T>