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From: Woonsan Ko <woonsan@apache.org>
Date: Mon, 15 Jul 2019 13:05:12 -0400
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Message-ID: <CAJoxgdxxzQ83Lub3iPQcm37sKVoUC7en1tEyAU6iSBCDG76gcw@mail.gmail.com>
Subject: Re: [SCXML] Support for Commons JEXL in SCXML
To: Commons Users List <user@commons.apache.org>
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Hi Diptendu,

I don't think the 'target' attribute is meant to be used with
expressional values. [1]
I guess you might want to try with transition elements with cond
attribute, which is expressional [1], instead.
For example,

    <transition target="Start" cond="user != null" />
    <transition target="SomethingElse" cond="user == null" />

Regards,

Woonsan

[1] https://www.w3.org/TR/scxml/#transition

On Mon, Jul 15, 2019 at 10:51 AM Diptendu Dutta
<dutta.diptendu@gmail.com> wrote:
>
> Some thing like
>
> <datamodel>
>                 <data id="intent" expr="null"/>
>                 <data id="startState" expr="&quot;Start&quot;"/>
> </datamodel>
> ..
>      <state id="StartBot">
> ..
>       <transition target='${startState}' />
>      </state>
>
> does not work.
>
> *SEVERE: Transition target with ID "${startState}" not found*
>
> However, the spec at
> https://commons.apache.org/proper/commons-jexl/reference/syntax.html
> mentions
>
> If a variable user valued JEXL is present in the environment - whether as a
> local or global variable -, the format
>
> `Hello ${user}`
>
> will evaluate as
>
> Hello JEXL
>
> How can I make this work?
>
> Regards,
>
> Diptendu Dutta

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