[
https://issues.apache.org/jira/browse/SCXML-47?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael Heuer updated SCXML-47:
-------------------------------
Attachment: state-machine-support-src.tar.gz
> Provide a state machine support class to allow for delegation.
> --------------------------------------------------------------
>
> Key: SCXML-47
> URL: https://issues.apache.org/jira/browse/SCXML-47
> Project: Commons SCXML
> Issue Type: Improvement
> Reporter: Michael Heuer
> Priority: Minor
> Attachments: state-machine-support-src.tar.gz
>
>
> This is not completely thought out yet, but if folks like the idea I might
> persue it further.
> I would like to use AbstractStateMachine but cannot extend from it:
> class B extends A /*, AbstractStateMachine */ {
> // copy source from AbstractStateMachine here
> }
> I propose here a StateMachineSupport class that provides for use by
> subclassing and for use by delegation. The constructors are a little messy,
> but in the end I have
> public class StateMachineSupport {
> // use by subclassing
> protected StateMachineSupport(...) {
> }
> // use by delegation
> public StateMachineSupport(Object delegator, ...) {
> }
> // ... methods from AbstractStateMachine
> }
> public abstract class AbstractStateMachine extends StateMachineSupport {
> protected AbstractStateMachine(...) {
> super(...);
> }
> }
> // use by subclassing
> class ConcreteStateMachine extends AbstractStateMachine {
> ConcreteStateMachine() {
> super(..."stopwatch.xml");
> }
> public void reset() { ... }
> public void running() { ... }
> public void paused() { ... }
> public void stopped() { ... }
> }
> // use by delegation
> class DelegatingStateMachine extends SomethingElse {
> StateMachineSupport delegate;
> DelegatingStateMachine() {
> delegate = new StateMachineSupport(this, ..."stopwatch.xml");
> }
> public void reset() { ... }
> public void running() { ... }
> public void paused() { ... }
> public void stopped() { ... }
> }
> StateMachineSupport.java, AbstractStateMachine2.java,
> StateMachineSupportTest.java, and AbstractStateMachine2Test.java attached.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
