[opencms-dev] Check if element exists

[Mario Jäger]

Hi Yves,

Please, show me the control code of your "page with free text". The 
structure is important for me, not the content of the elements. Shall 
mean, that you can remove the content of the elements, of course.

Kind Regards,
Mario.

Am 29.03.2011 16:45, schrieb 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
> <mailto: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
>
>     Visit OpenCms Days 2011 Conference and Expo
>     May 9 to May 10 2011 in Cologne, Germany
>     http://www.opencms-days.org
>
>     Alkacon Software GmbH  - The OpenCms Experts
>     http://www.alkacon.com - http://www.opencms.org
>
>
>
>
>
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-- 
-------------------
Mario Jäger

Visit OpenCms Days 2011 Conference and Expo
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