EL language question

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Nicolas Laplante - 14 Sep 2006 04:12 GMT

Hi all,

I didn't find a suitable JSP newsgroup so I post my question here:

I have a tag that has an attribute "level" which is a numeric type
(integer).

I want to know if it's possible to use EL language to create the
equivalent of this:

[code]
String str = "";

for (int i = 0; i < level; i++) {
str += "../";
}
[/code]

The methods in JSTL's core library (c) cannot do the trick as far as I
know, nor do the functionalities offered by the functions library (f).

Do I need to do it in a scriplet? If so, how can I access the "levels"
variable (which is an attribute of the custom tag) from the Java scriplet?

If you need any additional info, just ask! :)

Thank you,

Nicolas Laplante

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Manish Pandit - 14 Sep 2006 04:39 GMT

Is this in line with what you need?

Make sure you do an isELIgnored="false" in your JSP on the @page
declaration.

<c:forEach var="i" begin="1" end="10">

<c:set var="str" value="${str}../"/>

</c:forEach>

The result is : ${str}

-cheers,
Manish

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Manish Pandit - 14 Sep 2006 04:47 GMT

Oh - just to add the level variable you mentioned - you can access it
by doing a ${level}, which will change the loop to:

<c:forEach var="i" begin="0" end="${level}">

<c:set var="str" value="${str}../"/>

</c:forEach>

The result is : ${str}

Assuming level is a variable available in the page/request/session
scope. If you want you can even qualify the scope by
${requestScope.level} or ${sessionScope.level} or ${pageContext.level}
based on where it is.

-cheers,
Manish

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Nicolas Laplante - 14 Sep 2006 12:53 GMT

> Oh - just to add the level variable you mentioned - you can access it
> by doing a ${level}, which will change the loop to:
[quoted text clipped - 14 lines]
> -cheers,
> Manish

Thank you very much for your help! I must have misread the JSTL
documentation then :)

Nicolas Laplante

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Mark Space - 14 Sep 2006 20:32 GMT

> Thank you very much for your help! I must have misread the JSTL
> documentation then :)
>
> Nicolas Laplante

Not that I really think anyone here minds EL questions, but there is a
Tomcat mailing list. Check the tomcat.apache.org page, there's a link
to it somewhere on there. They can probably help you faster and better
than most people here can.

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EL language question

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