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From Leszek Gawron <>
Subject Re: Caching jx *without* flow
Date Mon, 18 Sep 2006 20:03:56 GMT
Niels van Kampenhout wrote:
> Leszek Gawron wrote:
>> Please update your cocoon checkout to the latest trunk. Then build 
>> cocoon-webapp, run it and point your browser to: 
>> http://localhost:8888/blocks/cocoon-template-sample/view/caching3
>> The template header is:
>> <page xmlns:jx="" 
>> jx:cache-key="${cocoon.request.parameters.toString()}" 
>> jx:cache-validity="${}">

>> you probably may do the same with 
>> jx:cache-key="${cocoon.parameters.toString()}" which will 
>> automatically build up cache-key out of all cocoon parameters passed 
>> to the template. Haven't tested it though. This means you probably 
>> don't even need any additional code to achieve your goals.
> I see what you mean, and I agree that it would allow us to do what we 
> are doing now with our custom code.
> BTW, we use Cocoon 2.1.8, not the trunk.
This should also work with 2.1

>> The only thing that's missing from 
>> functionality is the ability to exclude some parameters from cache 
>> key. Anyway this looks like FS from the start:
> What do you mean by FS? False Security?
Flexibility Syndrome :)

>>  - if template makes use of all cocoon parameters they should be a part
>>    of the cache key,
>>  - if not - you shouldn't pass them instead of excluding.
>> Please comment.
> These two statements are true, and exactly satisfy our requirements. You 
> may have other requirements, though.
I was refering to jx:includeKey and jx:excludeKey parameters in your 
generator. Why do you use it at all?

> What matters to me is this: in our projects we mainly use JXTG and XSLT, 
> and (as far as I can see from a user perspective) with our solution the 
> formation of the cache key is consistent between the two (cocoon 
> parameters == cache key). This is a big plus in the fragmented world of 
> Cocoon technologies.
I like the analogy. In order to fully utilise it we would have to go 
further in similarities: JTGX object model in this case should be 
constructed only with sitemap parameters.

automatic cache key from sitemap parameters + small object model = full 
XSLT analogy. We could try this.

> Bottom line: we prefer different solutions and are both happy with them. 
> Good thing we live in a free world ;-)
Agreed :)

Leszek Gawron, IT Manager                          MobileBox sp. z o.o.
+48 (61) 855 06 67                    
mobile: +48 (501) 720 812                       fax: +48 (61) 853 29 65

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