org.sakaiproject.cheftool

Class ControllerState

java.lang.Object

org.sakaiproject.cheftool.ControllerState

All Implemented Interfaces:

Observer

public abstract class ControllerState
extends Object
implements Observer

ControllerState is the core base class for the CHEF Tool's state objects.

State objects are used to store controller state for a tool. Specific state object implement this interface.

To support creation of controller state objects, make sure to supply a void constructor.

To support pooling of objects, implement the recycle() method to release any resources and restore the object to initial conditions before reuse.

Constructor Summary

Constructors

Constructor and Description
ControllerState()

Method Summary

Modifier and Type	Method and Description
String	getId()
String	getKey() Access a unique key for this state, combining the set id and the state id.
String	getSetId()
protected void	init() Init to startup values
void	recycle() Release any resources and restore the object to initial conditions to be reused.
void	setId(String id)
void	setSetId(String id)
void	update(Observable o, Object arg) This method is called whenever the observed object is changed.

Methods inherited from class java.lang.Object

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

Constructor Detail

ControllerState

public ControllerState()

Method Detail

init

protected void init()

Init to startup values

recycle

public void recycle()

Release any resources and restore the object to initial conditions to be reused.

getId

public String getId()

setId

public void setId(String id)

getSetId

public String getSetId()

setSetId

public void setSetId(String id)

getKey

public String getKey()

Access a unique key for this state, combining the set id and the state id.

Returns:

A unique key for this state, combining the set id and the state id.

update

public void update(Observable o,
                   Object arg)

This method is called whenever the observed object is changed. An application calls an Observable object's notifyObservers method to have all the object's observers notified of the change. default implementation is to cause the courier service to deliver to the interface controlled by my controller. Extensions can override.

Specified by:

update in interface Observer

Parameters:

o - the observable object.

arg - an argument passed to the notifyObservers method.