org.geotools.graph.structure.basic
Class BasicDirectedEdge

java.lang.Object
  org.geotools.graph.structure.basic.BasicGraphable
      org.geotools.graph.structure.basic.BasicDirectedEdge

All Implemented Interfaces:

DirectedEdge, DirectedGraphable, Edge, Graphable, java.io.Serializable

public class BasicDirectedEdge

extends BasicGraphable

implements DirectedEdge

Basic implementation of DirectedEdge.

Author:

Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.geotools.graph.structure.Edge

EQUAL_NODE_ORIENTATION, OPPOSITE_NODE_ORIENTATION, UNEQUAL_NODE_ORIENTATION

Constructor Summary

BasicDirectedEdge(DirectedNode in, DirectedNode out)
Contstructs a new DirectedEdge.

Method Summary

int	compareNodes(Edge other) Compares the node orientation of the edge with another edge.
DirectedNode	getInNode() Returns the originating (in) node of the edge.
java.util.Iterator	getInRelated() Returns an iterator over the in edges of the in node.
Node	getNodeA() Returns the in node.
Node	getNodeB() Returns the out node.
Node	getOtherNode(Node node) Returns one of the two nodes of an edge.
DirectedNode	getOutNode() Returns the terminating (out) node of the edge.
java.util.Iterator	getOutRelated() Returns an iterator over the out edges of the out node.
java.util.Iterator	getRelated() Returns an iterator over all edges incident to both the in and out nodes.
void	reverse() Removes the edge from the out list of the in node and from the in list of the out node.

Methods inherited from class org.geotools.graph.structure.basic.BasicGraphable

getCount, getID, getObject, isVisited, setCount, setID, setObject, setVisited, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.geotools.graph.structure.Graphable

getCount, getID, getObject, isVisited, setCount, setID, setObject, setVisited

Constructor Detail

BasicDirectedEdge

public BasicDirectedEdge(DirectedNode in,
                         DirectedNode out)

Contstructs a new DirectedEdge.

Parameters:

in - The in node of the edge.

out - The out node of the edge.

Method Detail

getInNode

public DirectedNode getInNode()

Description copied from interface: DirectedEdge

Returns the originating (in) node of the edge.

Specified by:

getInNode in interface DirectedEdge

Returns:

The directed node at the source of the edge.

See Also:

DirectedEdge.getInNode()

getOutNode

public DirectedNode getOutNode()

Description copied from interface: DirectedEdge

Returns the terminating (out) node of the edge.

Specified by:

getOutNode in interface DirectedEdge

Returns:

The directed node at the destination of the edge.

See Also:

DirectedEdge.getOutNode()

getNodeA

public Node getNodeA()

Returns the in node.

Specified by:

getNodeA in interface Edge

Returns:

The A node.

See Also:

Edge.getNodeA()

getNodeB

public Node getNodeB()

Returns the out node.

Specified by:

getNodeB in interface Edge

Returns:

The B node.

See Also:

Edge.getNodeB()

getOtherNode

public Node getOtherNode(Node node)

Description copied from interface: Edge

Returns one of the two nodes of an edge. If the specified node is node A, then node B is returned, and vice versa.

Specified by:

getOtherNode in interface Edge

Parameters:

node - The node opposite of the node to return.

Returns:

Node A if node B is specified, node B if node A is specified.

See Also:

Edge.getOtherNode(Node)

reverse

public void reverse()

Removes the edge from the out list of the in node and from the in list of the out node. Nodes are switched and then the edge is added to the in list of the new out node, and to the out list of the new in node.

Specified by:

reverse in interface Edge

See Also:

Edge.reverse()

getRelated

public java.util.Iterator getRelated()

Returns an iterator over all edges incident to both the in and out nodes.

Specified by:

getRelated in interface Graphable

Returns:

Iterator An iterator over other components of the graph that are related to the component.

See Also:

Graphable.getRelated()

getInRelated

public java.util.Iterator getInRelated()

Returns an iterator over the in edges of the in node.

Specified by:

getInRelated in interface DirectedGraphable

Returns:

An iterator over the other directed components related through an in relationship.

See Also:

DirectedGraphable.getInRelated()

getOutRelated

public java.util.Iterator getOutRelated()

Returns an iterator over the out edges of the out node.

Specified by:

getOutRelated in interface DirectedGraphable

Returns:

An iterator over the other directed components related through an out relationship.

See Also:

DirectedGraphable.getOutRelated()

compareNodes

public int compareNodes(Edge other)

Description copied from interface: Edge

Compares the node orientation of the edge with another edge.

Specified by:

compareNodes in interface Edge

Returns:

EQUAL_NODE_ORIENTATION : both nodes are equal in the correct order. UNEQUAL_NODE_ORIENTATION: both nodes are not equal OPPOSITE_NODE_ORIENTATION : both nodes are equal in opposite order.

See Also:

Edge.compareNodes(Edge)