[opencms-dev] Java Expression Language EL Question

[Babak]

Thank you Kai,

Yes, That is what I was looking for.

On 11/20/2014 11:04 AM, Schliemann, Kai wrote:
>
> Hi Babak,
>
> maybe this helps:
>
> *8.2 Accessing OpenCms functionality via the EL *
>
> OpenCms comes with several Java beans to provide access to 
> OpenCms-specific functionality in JSPs. In general, if required, an 
> object of each bean could be made available separately in a JSP. Also 
> several tags of the <cms:> taglib initialize and expose objects of 
> such beans (see section 8.1).
>
> Since OpenCms 9.0.1 the variable cms is present in the page scope for 
> each JSP. It makes an object of type 
> org.opencms.jsp.util.CmsJspStandardContextBean available. The object 
> provides a convenient way to access the most important OpenCms 
> functions via JSTL/EL. Thus, in most cases no bean at all has to be 
> included and initialized manually, and also formerly required use of 
> scriptlet code becomes obsolete.
>
> The standard context bean has a very rich interface. In particular, 
> access to several other Java beans shipped with OpenCms is granted. A 
> complete overview of the functionality exposed via the standard 
> context bean can be looked up in the JavaDoc of the current OpenCms 
> version. Look up the documentation of the class 
> CmsJspStandardContextBean. Starting there, you can easily explore the 
> interfaces of all other beans accessible via the standard context bean 
> as well. Aware of the naming conventions for Java Beans, you obtain an 
> overview of the properties available in EL.
>
> Taken from the documentation pdf shipped with OpenCms 9.0.1.
>
> If you need it, let me know.
>
> Best regards
>
> Kai
>
> *Von:*opencms-dev-bounces at opencms.org 
> [mailto:opencms-dev-bounces at opencms.org] *Im Auftrag von *Babak
> *Gesendet:* Donnerstag, 20. November 2014 17:56
> *An:* opencms-dev at opencms.org
> *Betreff:* Re: [opencms-dev] Java Expression Language EL Question
>
> And with doing a bit more research found that 
> http://www.opencms.org/taglib/cms is mapped to /WEB-INF/opencms.tld in 
> web.xml
>
>     <jsp-config>
>         <taglib>
>             <taglib-uri>http://www.opencms.org/taglib/cms</taglib-uri>
> <taglib-location>/WEB-INF/opencms.tld</taglib-location>
>         </taglib>
>     </jsp-config>
>
>
> So CMsJspLoader is going to load taglib.cms from /WEB-INF/opencms.tld
> but still can't track cms.element in tag library file.
> does CMsJspLoader actually instantiate cms object when it loads it ?
>
> even I don't know how ${cms.locale} is being translated.
>
> Thanks for help.
>
> Babak
>
> On 11/20/2014 2:23 AM, Babak wrote:
>
>     So I did a bit of research and found that all usable taglibs are
>     defined in the */WEB-INF/config/opencms-vfs.xml
>
>     *    <loader class="org.opencms.loader.CmsJspLoader">
>                         <param
>     name="taglib.cms">http://www.opencms.org/taglib/cms</param>
>
>     but still can't figure how to translate ${cms.element.id} or
>     ${cms.element.settings.boxschema}
>
>
>
>     On 11/19/2014 8:00 PM, Babak wrote:
>
>         I am trying to understand how ${cms.element.id}is being
>         translated in below source code.
>
>         https://github.com/alkacon/vie-related/blob/master/resources/detail.jsp
>
>
>         I mean, where at source code I should look to find the result
>         of ${cms.element.id}?
>
>         I know EL and I know cms is an object but in most of the codes
>         I don't see any cms object
>         being instantiated, and it only being used in code.
>
>         Does cms object being instantiated implicitly ?
>         from which class and how do I find the result of <div
>         class="box ${cms.element.settings.boxschema}">
>
>
>         Thanks
>         Babak
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>
>
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>
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