[jelly] Dynamic variable interpolation

[Grant Ingersoll <GS...@syr.edu>]

Hi,

Am a fairly new user of Jelly and am wondering if there is a way to use
the value of a variable as the name of a new variable which I can then
dereference in my script.  

Something like:

<j:set var="foo" value="a,b,c"/>
<j:set var="a.name" value="A"/>
<j:set var="b.name" value="B"/>
<j:set var="c.name" value="C"/>



<util:tokenize var="vars" delim=",">
         ${foo}
</util:tokenize>
<j:forEach var="var" varStatus="status" items="${vars.iterator()}">
     echo  ${  ${var}.name   }                                         
                <--------------------   what is the syntax for this???  

</j:forEach>


Output would be:
A
B
C

Do I use a dynabean?

Thanks,
Grant

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Re: [jelly] Dynamic variable interpolation

[Paul Libbrecht <pa...@activemath.org>]

I doubt nested JEXL expressions would work... try it!
However, the context variable is here for you so that
    ${context.getVariable(name)}
should do the job in a clean way, I believe.

Tell us if it helps.

paul


Le 8 juin 05, à 21:41, Grant Ingersoll a écrit :
> <util:tokenize var="vars" delim=",">
>          ${foo}
> </util:tokenize>
> <j:forEach var="var" varStatus="status" items="${vars.iterator()}">
>      echo  ${  ${var}.name   }
>                 <--------------------   what is the syntax for this???
>
> </j:forEach>
>
>
> Output would be:
> A
> B
> C


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Re: [jelly] Dynamic variable interpolation

[Dion Gillard <di...@gmail.com>]

On 6/9/05, Grant Ingersoll <GS...@syr.edu> wrote:
> Hi,
> 
> Am a fairly new user of Jelly and am wondering if there is a way to use
> the value of a variable as the name of a new variable which I can then
> dereference in my script.
> 
> Something like:
> 
> <j:set var="foo" value="a,b,c"/>
> <j:set var="a.name" value="A"/>
> <j:set var="b.name" value="B"/>
> <j:set var="c.name" value="C"/>
> 
> 
> 
> <util:tokenize var="vars" delim=",">
>          ${foo}
> </util:tokenize>
> <j:forEach var="var" varStatus="status" items="${vars.iterator()}">
>      echo  ${  ${var}.name   }
>                 <--------------------   what is the syntax for this???

        echo ${context.getVariable(var + '.name')}

should do it.
> 
> </j:forEach>
> 
> 
> Output would be:
> A
> B
> C
> 
> Do I use a dynabean?
> 
> Thanks,
> Grant
> 
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> To unsubscribe, e-mail: commons-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: commons-user-help@jakarta.apache.org
> 
> 


-- 
http://www.multitask.com.au/people/dion/
"You are going to let the fear of poverty govern your life and your
reward will be that you will eat, but you will not live." - George
Bernard Shaw

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