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Java > Open Source Codes > prefuse > data > util > NeighborIterator


1 package prefuse.data.util;
2
3 import java.util.Iterator JavaDoc;
4
5 import prefuse.data.Edge;
6 import prefuse.data.Node;
7
8 /**
9  * Iterator over neighbors of a given Node. Resolves Edge instances to
10  * provide direct iteration over the Node instances.
11  *
12  * @author <a HREF="http://jheer.org">jeffrey heer</a>
13  */
14 public class NeighborIterator implements Iterator JavaDoc {
15
16     private Iterator JavaDoc m_edges;
17     private Node m_node;
18     
19     /**
20      * Create a new NeighborIterator.
21      * @param n the source node
22      * @param edges the node edges to iterate over
23      */
24     public NeighborIterator(Node n, Iterator JavaDoc edges) {
25         m_node = n;
26         m_edges = edges;
27     }
28     
29     /**
30      * @see java.util.Iterator#remove()
31      */
32     public void remove() {
33         throw new UnsupportedOperationException JavaDoc();
34     }
35
36     /**
37      * @see java.util.Iterator#hasNext()
38      */
39     public boolean hasNext() {
40         return m_edges.hasNext();
41     }
42
43     /**
44      * @see java.util.Iterator#next()
45      */
46     public Object JavaDoc next() {
47         Edge e = (Edge)m_edges.next();
48         return e.getAdjacentNode(m_node);
49     }
50
51 } // end of class NeighborIterator
52
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