org.arch4j.clientcontroller
Class ClientStateProvider

java.lang.Object
  |
  +--org.arch4j.clientcontroller.ClientStateProvider

public class ClientStateProvider

extends Object

Provides runtime access to the client state model.

Version:

1.0

Author:

David Colwell

Field Summary

protected String	CLIENT_STATE_DOMAIN The property file name.
protected String	ROOT_TRANSITION_CLASS_PROPERTY The root transition class property name.

Constructor Summary

protected

ClientStateProvider() This is made protected so the only way to access this class is through the getProvider method.

Method Summary

protected Object	createInstance(String classname) Create an instance from the classname.
static ClientStateProvider	getProvider() Returns the singleton instance of this class.
protected Transition	getRootTransition() Get the root transition class name implementation to use from the property setting.
StateMachine	getStateMachine() Returns a reference to a new root StateMachine.

Methods inherited from class java.lang.Object

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

Field Detail

CLIENT_STATE_DOMAIN

protected final String CLIENT_STATE_DOMAIN

The property file name.

See Also:

Constant Field Values

ROOT_TRANSITION_CLASS_PROPERTY

protected final String ROOT_TRANSITION_CLASS_PROPERTY

The root transition class property name.

See Also:

Constant Field Values

Constructor Detail

ClientStateProvider

protected ClientStateProvider()

This is made protected so the only way to access this class is through the getProvider method.

Method Detail

getProvider

public static ClientStateProvider getProvider()

Returns the singleton instance of this class.

getStateMachine

public StateMachine getStateMachine()

Returns a reference to a new root StateMachine.

getRootTransition

protected Transition getRootTransition()

Get the root transition class name implementation to use from the property setting. Instantiate the transition and return.

Throws:

EnvironmentalException - if unable to retrieve the classname property or associate a Class object with the classname.

createInstance

protected Object createInstance(String classname)

Create an instance from the classname.

Throws:

EnvironmentalException - if fails to create a new instance of the specified classname. Note that we do not throw a StateMachineException here as no state machine yet exists to catch and handle this.