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From: "Lee, Cheryl - ES/RDR -Gil" <Cheryl.Lee@itt.com>
To: "'user@commons.apache.org'" <user@commons.apache.org>
CC: "Palmisano, Sharon - ES/RDR -Gil" <Sharon.Palmisano@itt.com>
Date: Wed, 14 Oct 2009 13:16:12 -0700
Subject: [SCXML] Internal transition not producing  expected results
Thread-Topic: [SCXML] Internal transition not producing  expected results
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I am having problems with an internal transition in a composite state.  The=
 transitions "ONLINELOCAL", "ONLINEREMOTE", AND "OFFLINE" lead to the appro=
priate states within ControlIsEnabled however, the entry and exit actions o=
f ControlIsEnabled are triggered.  This behavior is opposite of general sta=
te machine theory behavior.  Is my syntax wrong for an internal transition =
or is executing the entry/exit actions the intended behavior in apache comm=
ons scxml?


<state id=3D"ControlEnabled">
          <onexit><my:SendMsg/></onexit>
          <initial id=3D"ControlInitial">
            <transition target=3D"ControlIsEnabled"/>
          </initial>
          <state id=3D"ControlIsEnabled">
            <onentry><my:ControlInit/></onentry>
            <onexit><my:ControlExit/></onexit>
            <state id=3D"OnlineRemote">
              <onentry><my:ChangeMode/></onentry>
              <transition event=3D"" target=3D"ControlDisabled"/>
              <transition event=3D"CAR_LOCAL" target=3D"CarLocalCtrl"/>
              <transition event=3D"CAR_REMOTE" target=3D"CarRemoteCtrl"/>
            </state>
            <state id=3D"OnlineLocal">
              <onentry><my:ChangeMode/></onentry>
              <transition event=3D"CAR_LOCAL" target=3D"CarLocalCtrl"/>
              <transition event=3D"CAR_REMOTE" target=3D"CarRemoteCtrl"/>
            </state>
            <state id=3D"Offline">
              <onentry><my:ChangeMode/></onentry>
              <transition event=3D"CAR_LOCAL" target=3D"CarLocalCtrl"/>
              <transition event=3D"CAR_REMOTE" target=3D"CarRemoteCtrl"/>
            </state>
            <initial id=3D"ControlEnabledInitial">
              <transition target=3D"OnlineLocal"/>
            </initial>
            <state id=3D"CarLocalCtrl">
              <onentry><my:ChangeCarMode/></onentry>
            </state>
            <state id=3D"CarRemoteCtrl">
              <onentry><my:ChangeCarMode/></onentry>
            </state>
            <transition event=3D"ONLINEREMOTE" target=3D"OnlineRemote"/>
            <transition event=3D"OFFLINE" target=3D"Offline"/>
            <transition event=3D"ONLINELOCAL" target=3D"OnlineLocal"/>
          </state>
          <transition event=3D"CONTROLMODEACTIONSTATUSBUTTON" target=3D"Con=
trolDisabled"/>
          <transition event=3D"EXITSTATUSONLYBUTTON" target=3D"Status"/>
        </state>



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