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From Sylvain Wallez <>
Subject Request interface change (was: Re: environment input module)
Date Tue, 21 Jan 2003 19:53:27 GMT
Christian Haul wrote:

>On 21.Jan.2003 -- 05:35 PM, Torsten Curdt wrote:
>>>>sure - will do...
>>>What's the need for an environment input module besides getting the 
>>>current uri prefix ?
>>I couldn't really think of anything else yet..
>>>Remember that environment is an internal object used by the pipeline 
>>>system (sitemap + pipeline implementations) that isn't visible from 
>>>other classes.
>>>I also recently needed to get the uri-prefix, and was thinking of adding 
>>>a new getSitemapPath() to Request, that would complement 
>>>getContextPath() with the current uri prefix.
>>>Thoughts ?
>>Something like that was also my first thought... just hesitated to 
>>propose a change/addition of the Request interface ...since I only need 
>>it inside the sitemap - so I came up with the idea of the environment 
>>Shall we add it to the Request?
>Sounds even better.

Thinking further about this, we have to define carefully how this 
relates to the "cocoon:" protocol, because in such a case we have _two_ 
request paths :
- the protocol-level path, accessible using getRequestURI(),
- the sitemap-level path, accessible using getSitemapURI() (different 
from the above in the case of a mount or "cocoon:")

We also have to consider that, through getSitemapURI(), the 
"getSitemapXxx" names are tied to the current sitemap request (i.e. the 
"cocoon:" one).

IMO, the use case is more related to the protocol-level URI : I had the 
need for this when building links to images located at the root of the 
current sitemap from an abitrarily nested URI (see [1] and search for 

But this is only my view of the problem. Any other use case ?

We also have to consider how to handle the interface change :
- on 2.1, no problem : we're not even alpha ;-)
- on 2.0, there can be some backwards compatibility for people having 
implemented their own Request without extending one of the provided 
classes. Are there many of them ? I would say no, but if there are, 
please stand up !



Sylvain Wallez                                  Anyware Technologies 
{ XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }

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