net.sourceforge.esw.graph
Class NodeFactory

java.lang.Object
  |
  +--net.sourceforge.esw.graph.NodeFactory

public class NodeFactory

extends java.lang.Object

Responsible for creation of INode instances.

"Pluggable factories" allow the application to add its own custom implementations of the INode interface to the framework in a consitent, simple way. Custom implementations of the INode interface can thus be used as if they were a standard part of the framework.

The default implementation returns the ESW implementation of the INode interface.

Examples:

   MyCustomNodeFactory customFactory = new MyCustomNodeFactory();
   NodeFactory.setNodeFactory( customFactory );
 

See Also:

INode

Field Summary

protected static INodeFactory

nodeFactory The INodeFactory instance to which INode instance creation is delegated.

Constructor Summary

NodeFactory()

Method Summary

static INode	createNode() Creates a new empty INode instance.
static INode	createNode(java.lang.Object aID) Creates a new INode instance with the specified identifier.
static INode	createNode(java.lang.Object aID, java.lang.Object aValue) Creates a new INode instance with the specified identifier and value.
static INodeFactory	getNodeFactory() Returns the INodeFactory instance being used by this NodeFactory.
static void	setNodeFactory(INodeFactory aNodeFactory) Sets the INodeFactory instance to be used by this NodeFactory.

Methods inherited from class java.lang.Object

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

Field Detail

nodeFactory

protected static INodeFactory nodeFactory

The INodeFactory instance to which INode instance creation is delegated.

Constructor Detail

NodeFactory

public NodeFactory()

Method Detail

createNode

public static INode createNode()

Creates a new empty INode instance.

Returns:

an empty INode instance.

createNode

public static INode createNode(java.lang.Object aID)

Creates a new INode instance with the specified identifier.

Parameters:

aID - the identifier used by the INode instance.

Returns:

an INode instance with the specified identifier.

createNode

public static INode createNode(java.lang.Object aID,
                               java.lang.Object aValue)

Creates a new INode instance with the specified identifier and value.

Parameters:

aID - the identifier used by the INode instance.

aValue - the value used by the INode instance.

Returns:

an INode instance with the specified identifier and value.

setNodeFactory

public static void setNodeFactory(INodeFactory aNodeFactory)

Sets the INodeFactory instance to be used by this NodeFactory.

Parameters:

aNodeFactory - the INodeFactory instance to be used.

getNodeFactory

public static INodeFactory getNodeFactory()

Returns the INodeFactory instance being used by this NodeFactory.