I tried to reproduce your problem, but I cannot see any problems with the
predicate not being honoured. Here's a gist with what I did to reproduce
it: https://gist.github.com/johanandren/7d01d19211867df0c308ba5fb1294162
--
Johan
Akka Team
On Mon, Apr 24, 2017 at 10:35 AM, Ankit Thakur <ankit...@gmail.com> wrote:
> Hi Guys,
>
> I have implemented a persistent FSM in Java, wherein i am evaluating a
> condition and post the validation of the same i decide to *stay* or *goTo*
> another state. I am a version just before the 2.5.0, so i am not very sure
> if the below mentioned issue is resolved or not.
>
> The issue is that i am not able to evaluate a predicate with *matchEvent *but
> the same works with *.event *construct. Below is a sample of the code.
>
> when(State.A,
> matchEvent(SomeEvent.class,
> (someEvent, domainEvent) -> {
> return ((some condition) ? false : true;
> }, (someEvent, domainEvent) ->
> {
> \* do something here *\
> return stay().
> applying(someEvent).
> andThen(\* do something here *\);
> }).
> event((SomeEvent.class,
> ((someEvent, domainEvent) -> {
> return (((some condition) ? true : false;
> }, (someEvent, domainEvent) ->
> {
> \* do something here *\
> return goTo(State.B).
> applying(someEvent).
> andThen(\* do something here *\);
> }));
>
> As mentioned above, the above piece of code does not honor the *condition
> *when coupled with *matchEvent*, but does work in case of *.event*.
>
> when(State.A,
> matchEvent(HackEventToLetFSMProcessPredicate.class,
> (hackEventToLetFSMProcessPredicate, domainEvent) -> {
> return ((some condition) ? false : true;
> }, (hackEventToLetFSMProcessPredicate, domainEvent) ->
> {
> \* do something here *\
> return stay().
> applying(someEvent).
> andThen(\* do something here *\);
> }).
> event((SomeEvent.class,
> ((someEvent, domain) -> {
> return (((some condition) ? true : false;
> }, (someEvent, domainEvent) ->
> {
> \* do something here *\
> return stay().
> applying(someEvent).
> andThen(\* do something here *\);
> }).
> event((SomeEvent.class,
> ((someEvent, domainEvent) -> {
> return (((some condition) ? true : false;
> }, (stateA, someEvent) ->
> {
> \* do something here *\
> return goTo(State.B).
> applying(someEvent).
> andThen(\* do something here *\);
> }
> ));
>
> Any help or update regarding this issue/bug is highly appreciated.
>
> Regards,
> Ankit
>
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>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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