[opencms-dev] Check if element exists

[Yves Glodt]

Hi Mario,

in fact the element exists in the page, so yes, I wonder why isEmpty returns
"true".

And I also wonder why the 2 other calls return false... :-)

Is there another way to check whether an element exists in a page?

The example here does also not work as I expect:
http://opencms-wiki.org/EL_functions_provided_by_OpenCMS_taglib#XML_content

Maybe I expect something impossible. As said, my page is a simple "page with
free text"


On 29 March 2011 16:13, Mario Jäger <m.jaeger at alkacon.com> wrote:

> Hi Yves,
>
> I assume, that you are wondering over the (second) return value "true",
> because the element does not exist in your xml content. With the three
> function calls you use, methods in
> org.opencms.jsp.util.CmsJspContentAccessValueWrapper.java are used. The
> second call uses the method getIsEmpty() in that class. And that method
> also returns true for non existing values. The description for that
> method says: Returns true in case the value is empty, that is either
> null or an empty String.
>
> Kind Regards,
> Mario.
>
> Am 29.03.2011 14:58, schrieb Yves Glodt:
> > Hello,
> >
> > I try to check if an element exists in a "page with free text", and if
> > yes, include it.
> >
> > The check I do like this (in a c:if), but these 3 calls return "false,
> > true, false" (in order of appearance)
> >
> ${cms:vfs(pageContext).xml[cms:vfs(pageContext).context.uri].hasValue['rcontent']}
> >
> ${cms:vfs(pageContext).xml[cms:vfs(pageContext).context.uri].value['rcontent'].isEmpty}
> >
> ${cms:vfs(pageContext).xml[cms:vfs(pageContext).context.uri].value['rcontent'].exists}
> >
> > What is wrong about this?
> >
> > Best regards,
> > Yves
> >
> >
> >
> >
> >
> >
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>
> --
> -------------------
> Mario Jäger
>
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>
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>
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