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Posted to taglibs-user@tomcat.apache.org by Ashish Srivastava <as...@yahoo.com> on 2006/09/28 19:28:10 UTC
Using Java variables in Xtags select
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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Re: Using Java variables in Xtags select
Posted by Rashmi Rubdi <de...@yahoo.com>.
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 <as...@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
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam
> protection around
> http://mail.yahoo.com
>
>
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> To unsubscribe, e-mail:
> taglibs-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail:
> taglibs-user-help@jakarta.apache.org
>
>
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