Error on resolving conflicting transitions for compound states
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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
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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