dev@jsftemplating.java.net

Re: JSFTemplating: Re: How to use 'if'

From: Anissa Lam <Anissa.Lam_at_Sun.COM>
Date: Mon, 04 Sep 2006 15:44:51 -0700

Hi Ken,
I will file an enhancement request.
But i do think that the ability to control if a handler should be called
is really needed,
In gui, there are lots of codes that depends the availability of 'if' to
decide what to be called. eg

<call name="createMBeanWithReferences" if="$attribute(isMBean)" />
<call name="createResourceWithReferences" if="!$attribute(isMBean)" />

If we can't do something equivalent to this, it will be major drawback
from the jato framework.

thanks
Anissa.

Ken Paulsen wrote:
>
> Hi Anissa,
>
> I may support this the way you listed below, however, the support
> doesn't exist right now. (FYI, the basic support for this in handlers
> is there as handlers can be hierarchical and conditionally execute
> "child" handlers... but the syntax is not robust enough to create this
> use case.)
>
> There is "if" support a the "(Layout)Component" level, however. This
> allows you to make conditional areas of a page. Something like:
>
> <if $attribute{"version"}=EE>
> "This is the EE Version
> </if>
> <if !($attribute{"version"}=EE)>
> "This is the PE Version
> </if>
>
> I'd like to expand this to support "else" and to expand this to
> handlers... please file an enhancement request on issue tracker if
> you can. In the mean time, I hope the above syntax will support what
> you need.
>
> Thanks!
>
> Ken
>
> Anissa Lam wrote:
>> Hi Ken,
>>
>> I want to know if 'if' is supported in jsftemplating. If so, can
>> you show us the syntax on how to use it ?
>>
>> Specificially, i am looking for something like this:
>>
>> <event>
>> <! beforeEncode
>> *if ( $attribute{"version"} == "EE") *{
>> println(value="this is EE version");
>> } ???? Can i use else here ?
>> *if ($attribute{"version"} != "EE") *{
>> println(value=" This is NOT EE version");
>> }
>> />
>> </event>
>>
>> thanks
>> Anissa
>>