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From Rashmi Rubdi <dev_subscripti...@yahoo.com>
Subject Re: Using Java variables in Xtags select
Date Thu, 28 Sep 2006 23:24:39 GMT
Have you set up JSTL?

If you use the latest version JSTL1.1 core tags you
can do this:

<c:set var="child_id" value="someValue"/>

> <xtags:forEach context="<%=parsed%>"
>        select="//child[@id=$child_id]/class">
>   ...
> </xtags:forEach>

Here are some JSTL installation instructions:
http://jakarta.apache.org/taglibs/doc/standard-doc/standard/GettingStarted.html

--- Ashish Srivastava <ashish7s@yahoo.com> wrote:

> Hi,
>   I am using xtags library in a JSP and am having
> trouble using Java variables while selecting XML
> nodes. The XML to be parsed is:
> 
> <xtags:parse id="parsed">
> <parent id="1">
>    <child id="c1">
>        <class grade="art"/>
>        <class grade="science"/>
>    </child>
>    <child> ... </child>
> </parent>
> </xtags:parse>
> 
> <xtags:forEach context="<%=parsed%>"
>        select="//child[@id=<%=child_id%>/class">
>   ...
> </xtags:forEach>
> 
> Where child_id is a Java variable defined in the
> JSP.
> 
> The above code throws an exception complaining about
> '<' in the expression. Even after escaping the
> character it does not work. I even tried with
> indexing
> like, 
> 
> select="//child[i]/class"
> 
> where i is the index of the line. The problem is the
> above select code returns all the child nodes
> instead
> of the index=i. Seems like its null or something. 
> 
> Help is highly appreciated.
> 
> Thanks,
> -Ashish
> 
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