Hi Woonsan,
On 16-04-14 15:49, Woonsan Ko wrote:
Hi Francis,
I think the best practices are to serialize either o.a.c.s.SCXMLExecutor [1] or
o.a.c.s.model.SCXML instances. Both cases are well-maintained in test code. [2]
Actually, since the last milestone SCXMLExecutor no longer is serializable :)
See also https://issues.apache.org/jira/browse/SCXML-197
I still need to provide updated documentation for this, but the SCXMLTestHelper
[2] class has been (and had to be) updated for this changed usage.
In your case, you can probably (de)serialize SCXMLExecutor instance directly to
store/load the execution context.
Also, as far as I can see, SCXMLExecutor doesn't provide #(at|de)tachInstance()
methods and I don't think it would do even later because SCInstance doesn't
necessarily have full information about the current execution context.
So, please (de)serialize the SCXMLExecutor instance instead.
You need to update to the latest milestone 1 or trunk, then you'll see the new
attach/detach instance features ;)
Cheers,
Woonsan
[1] http://commons.apache.org/proper/commons-scxml/faq.html#serializability
[2]
http://svn.apache.org/repos/asf/commons/proper/scxml/trunk/src/test/java/org/apache/commons/scxml2/SCXMLTestHelper.java
On Wednesday, April 16, 2014 9:07 AM, "[email protected]" <[email protected]> wrote:
Hi all,
I would like to know the best practice to serialize/deserialize SCXML fsm.
I do this during the creation of the SCXML executor, scInstace is the
serialized context:
List<CustomAction> customActions = new ArrayList<CustomAction>();
CustomAction ca =
new CustomAction("http://my.custom-actions.domain/CUSTOM1";,
"hello", Hello.class);
customActions.add(ca);
JexlEvaluator evaluator = new JexlEvaluator();
try {
scxml = SCXMLReader.read(StopWatch.class.getClassLoader().
} catch (Exception e) {
e.printStackTrace();
throw e;
}
executor = null;
try {
executor = new SCXMLExecutor(evaluator, null, new
SimpleErrorReporter());
if (scInstance != null) {
// serialized context use it
executor.attachInstance(scInstance);
executor.registerInvokerClass("x-test",
DummyInvoker.class);
executor.setStateMachine(scxml);
executor.go();
setInitialState(executor, "paused");
} else {
// new context
Context rootContext = new JexlContext();
rootContext.set("var1", "value1");
executor.registerInvokerClass("x-test",
DummyInvoker.class);
executor.setStateMachine(scxml);
executor.setRootContext(rootContext);
executor.go();
}
} catch (ModelException me) {
// Executor initialization failed, because the
// state machine specified has inconsistencies
me.printStackTrace();
}
I serialize executor.detachInstance(). It's seem to work, but is it the right
way to restart a SCXML 'session' ?
Thanks
Francis.
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