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From Jack Lund <jack.l...@stagrp.com>
Subject Re: [Jelly] Parallel arrays and array access
Date Fri, 26 May 2006 15:19:33 GMT
Thanks! That helps a lot.

-Jack

Paul Libbrecht wrote:

> Jack Lund wrote:
>
>> Hi. Sorry if this is a newbie question, but I can't find it on the 
>> mailing lists or anywhere.
>>
>> I'm using Jelly within Maven, and I'm trying to access elements in 
>> two parallel arrays. My script looks something like this:
>>
>>      <u:tokenize var="names" delim=",">${foo.names}</u:tokenize>
>>      <u:tokenize var="classes" delim=",">${foo.classes}</u:tokenize>
>>      <j:forEach items="${names}" var="name", indexVar="i">
>>             <ant:echo>name = ${name}, class = 
>> ${classes}[${i}]</ant:echo>
>>      </j:forEach>
>>
>> Obviously, the second part of my ant:echo line doesn't work, but my 
>> questions are:
>> 1) How do you access an item in an array in Jelly - I can't seem to 
>> find anything that says what the syntax is
>
> As in java... the following works:
> <j:jelly xmlns:j="jelly:core">
>  <j:set var="x" value="xx"/>
>  <j:set var="x" value="${x.toCharArray()}"/>
>  ${x[0]}
> </j:jelly>
> (i.e. its output is x)
>
>> 2) Is this the best way to handle parallel arrays in Jelly?
>
> Now, be careful util:tokenize doesn't produce arrays! It produces a 
> List... so
> ${classes[i]} might not work but ${classes.get(i)} does work.
> I think the way you've done with the index is the way to process 
> parallel arrays. You could also use an iterator!
>
> paul
>
> PS: so many folks forget that jelly is not in an opaque bizarre 
> language but just in java.... having problems with object x, try 
> ${x.getClass()}... then use the appropriate methods!
>
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