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Posted to dev@commons.apache.org by "Rahul Akolkar (JIRA)" <ji...@apache.org> on 2007/08/02 04:37:52 UTC
[jira] Resolved: (SCXML-52) Error on resolving conflicting
transitions for compound states
[ https://issues.apache.org/jira/browse/SCXML-52?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rahul Akolkar resolved SCXML-52.
--------------------------------
Resolution: Fixed
Fixed in trunk: http://svn.apache.org/viewvc?view=rev&rev=561998 (also added a simplified version of your test case to the test suite).
> Error on resolving conflicting transitions for compound states
> --------------------------------------------------------------
>
> Key: SCXML-52
> URL: https://issues.apache.org/jira/browse/SCXML-52
> Project: Commons SCXML
> Issue Type: Bug
> Affects Versions: 0.6
> Reporter: Ingmar Kliche
> Fix For: 0.7
>
>
> There seems to be a problem on the resolution of conflicting transitions for compound states. See the following scxml document:
> <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" initialstate="s1">
> <datamodel>
> <data name="x"/>
> </datamodel>
>
> <state id="s1">
> <initial>
> <transition target="s11"/>
> </initial>
>
> <transition event="event_1">
> <assign name="x" expr="'s1'"/>
> </transition>
>
> <transition event="event_2" target="s1">
> <assign name="x" expr="'s1'"/>
> </transition>
>
> <state id="s11">
> <transition event="event_1">
> <assign name="x" expr="'s11'"/>
> </transition>
> <transition event="event_2" target="s11">
> <assign name="x" expr="'s11'"/>
> </transition>
> </state>
> </state>
>
> <state id="s2" final="true" />
> </scxml>
> The state machine enters a compound state s1 which contains another state s11 as its intitial state. Both states have transitions on event_1 and event_2. Note that event_1 has no target, whereas event_2 has a target towards the same state.
> For event_2 everything works as expected, i.e. only the transition on state s11 is executed and therefor s11 is reentered (I have a listener in my environment and can monitor this).
> The error occurs at event_1. On event_1 both transitions of s1 _and_ s11 are executed - but only once. After this, the state machine gets stuck (in particular the currentStates-List is empty). Any subsequent event will not cause any further action.
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