Accessing the wrapped context from a tag file.

[Rick Ross <rr...@stupendousman.com>]

Hi all,

I have a simple jsp that I used to include statically to pages when I 
needed to see what variables were in all of the implicit objects 
(parameters, session etc).  For example:
<table>
<c:forEach items='${pageScope}' var='page'>
       <tr><th>${page.key}</th><td>${page.value}</td></tr>
</c:forEach>
</table>

Now I want to convert it to a tag file, but the problem is that the 
pageScope inside a tag file is a fresh clean pageScope, as demanded by 
the Spec.  I want access to the original pageScope as well.    Any one 
know if this scope is available via the EL?

Thanks,

Rick

Re: Accessing the wrapped context from a tag file.

[Rick Ross <rr...@stupendousman.com>]

Thanks.  I guess I'll write the tag... bummer.   I suspect that the 
'outer' scope should be made available, surely there will be other use 
cases for it.

R

Serge Knystautas wrote:

> Rick Ross wrote:
>
>> Hi all,
>>
>> I have a simple jsp that I used to include statically to pages when I 
>> needed to see what variables were in all of the implicit objects 
>> (parameters, session etc).  For example:
>> <table>
>> <c:forEach items='${pageScope}' var='page'>
>>       <tr><th>${page.key}</th><td>${page.value}</td></tr>
>> </c:forEach>
>> </table>
>>
>> Now I want to convert it to a tag file, but the problem is that the 
>> pageScope inside a tag file is a fresh clean pageScope, as demanded 
>> by the Spec.  I want access to the original pageScope as well.    Any 
>> one know if this scope is available via the EL?
>
>
> This doesn't really have anything to do with EL.  You can't access 
> this other scope.  Alternatives might be:
> 1. iterate through the pageContext attributes and store them in a Map 
> in a request attriubte.
> 2. create a custom tag instead of an include file.  then the tag would 
> exist in the same page scope.
> 3. do a static include, so you're just inlining that separate file and 
> you stay in the same page scope.
>

Re: Accessing the wrapped context from a tag file.

[Serge Knystautas <se...@lokitech.com>]

Rick Ross wrote:
> Hi all,
> 
> I have a simple jsp that I used to include statically to pages when I 
> needed to see what variables were in all of the implicit objects 
> (parameters, session etc).  For example:
> <table>
> <c:forEach items='${pageScope}' var='page'>
>       <tr><th>${page.key}</th><td>${page.value}</td></tr>
> </c:forEach>
> </table>
> 
> Now I want to convert it to a tag file, but the problem is that the 
> pageScope inside a tag file is a fresh clean pageScope, as demanded by 
> the Spec.  I want access to the original pageScope as well.    Any one 
> know if this scope is available via the EL?

This doesn't really have anything to do with EL.  You can't access this 
other scope.  Alternatives might be:
1. iterate through the pageContext attributes and store them in a Map in 
a request attriubte.
2. create a custom tag instead of an include file.  then the tag would 
exist in the same page scope.
3. do a static include, so you're just inlining that separate file and 
you stay in the same page scope.

-- 
Serge Knystautas
President
Lokitech >> software . strategy . design >> http://www.lokitech.com
p. 301.656.5501
e. sergek@lokitech.com