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com.phoenixst.plexus
Class DefaultEdge  

java.lang.Object
  com.phoenixst.plexus.DefaultEdge

All Implemented Interfaces:

Graph.Edge, java.io.Serializable

Direct Known Subclasses:

DefaultObjectEdge, DefaultSimpleEdge

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public class DefaultEdge

extends java.lang.Object

implements Graph.Edge, java.io.Serializable

A default Graph.Edge implementation in which the user-defined object must be null. The equals() 55 method is inherited from Object and uses reference equality. This class should only be used by Graphs which create edges once and store them.

Since:

1.0

Version:

$Revision: 1.6 $

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Field Summary
protected  java.lang.Object	head           The head of this Edge.
protected  boolean	isDirected           Whether or not this Edge is directed.
protected  java.lang.Object	tail           The tail of this Edge.

 

Constructor Summary

DefaultEdge(java.lang.Object tail, java.lang.Object head, boolean isDirected)           Creates a new DefaultEdge.

 

Method Summary
protected static boolean	equals(java.lang.Object a, java.lang.Object b)
java.lang.Object	getHead()           Returns the node which is the head of this Edge.
java.lang.Object	getOtherEndpoint(java.lang.Object node)           Returns the node which is at the other end of this Edge than the specified node.
java.lang.Object	getTail()           Returns the node which is the tail of this Edge.
java.lang.Object	getUserObject()           Returns the user object contained in this Edge.
boolean	isDirected()           Returns whether or not this Edge is directed.
void	setUserObject(java.lang.Object object)           Sets the user object contained in this Edge.
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class java.lang.Object

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

 

Methods inherited from interface com.phoenixst.plexus.Graph.Edge

equals, hashCode

 

Field Detail

tail

protected java.lang.Object tail

The tail of this Edge.

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head

protected java.lang.Object head

The head of this Edge.

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isDirected

protected boolean isDirected

Whether or not this Edge is directed.

Constructor Detail

DefaultEdge

public DefaultEdge(java.lang.Object tail,
                   java.lang.Object head,
                   boolean isDirected)

Creates a new DefaultEdge.

Method Detail

isDirected

public boolean isDirected()

Description copied from interface: Graph.Edge

Returns whether or not this Edge is directed.

Specified by:

isDirected in interface Graph.Edge

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getUserObject

public java.lang.Object getUserObject()

Description copied from interface: Graph.Edge

Returns the user object contained in this Edge.

Specified by:

getUserObject in interface Graph.Edge

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setUserObject

public void setUserObject(java.lang.Object object)

Description copied from interface: Graph.Edge

Sets the user object contained in this Edge.

Specified by:

setUserObject in interface Graph.Edge

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getTail

public java.lang.Object getTail()

Description copied from interface: Graph.Edge

Returns the node which is the tail of this Edge.

Specified by:

getTail in interface Graph.Edge

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getHead

public java.lang.Object getHead()

Description copied from interface: Graph.Edge

Returns the node which is the head of this Edge.

Specified by:

getHead in interface Graph.Edge

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getOtherEndpoint

public java.lang.Object getOtherEndpoint(java.lang.Object node)

Description copied from interface: Graph.Edge

Returns the node which is at the other end of this Edge than the specified node.

Specified by:

getOtherEndpoint in interface Graph.Edge

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equals

protected static final boolean equals(java.lang.Object a,
                                      java.lang.Object b)

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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