org.geotools.resources
Class LazySet

java.lang.Object
  java.util.AbstractCollection
      java.util.AbstractSet
          org.geotools.resources.LazySet

All Implemented Interfaces:

java.util.Collection, java.util.Set

public final class LazySet

extends java.util.AbstractSet

An immutable set built from an iterator, which will be filled only when needed. This implementation do not check if all elements in the iterator are really unique; we assume that it was already verified by ServiceRegistry. This set is constructed by FactoryFinder.

Since:

2.0

Version:

$Id: LazySet.java 17672 2006-01-19 00:25:55Z desruisseaux $

Author:

Martin Desruisseaux

Constructor Summary

LazySet(java.util.Iterator iterator)
Construct a set to be filled using the specified iterator.

Method Summary

java.lang.Object	get(int index) Returns the element at the specified position in this set.
boolean	isEmpty() Tests if this set has no elements.
java.util.Iterator	iterator() Returns an iterator over the elements contained in this set.
int	size() Returns the number of elements in this set.

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

add, addAll, clear, contains, containsAll, remove, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

add, addAll, clear, contains, containsAll, remove, retainAll, toArray, toArray

Constructor Detail

LazySet

public LazySet(java.util.Iterator iterator)

Construct a set to be filled using the specified iterator. Iteration in the given iterator will occurs only when needed.

Method Detail

iterator

public java.util.Iterator iterator()

Returns an iterator over the elements contained in this set. This is not the same iterator than the one given to the constructor.

size

public int size()

Returns the number of elements in this set. Invoking this method force the set to immediately iterates through all remaining elements.

isEmpty

public boolean isEmpty()

Tests if this set has no elements.

get

public java.lang.Object get(int index)

Returns the element at the specified position in this set.