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From Sylvain Wallez <sylv...@apache.org>
Subject Re: XSLSerializer, XSLGenerator, XSLReader
Date Mon, 20 Jun 2005 22:11:55 GMT
BURGHARD √Čric wrote:

>>- handle the <?xml-stylesheet?> processing instruction by serializing
>>straight XML for those browsers that do support it, and process on the
>>server for others.
>>
>>    
>>
>
>great idea !
>
>  
>
>>>By extension, why not having an XSLGenerator and an XSLReader ?
>>> 
>>>
>>>      
>>>
>>Hmm... you're starting to build pipelines-in-one-component. This doesn't
>>seem to have the same kind of benefits than the serializer.
>>
>>    
>>
>
>Right, i thought that for simple pipelines that are only
>generator + xslt transformer + xml serializer
>
><read type="xslt" src="{xmldb:///}" xslt="stylesheets/site2xhtml.xsl"/>
>
>would be more readable, but i'm not convinced in fact.
>

:-)

>As i must use the
>sourceResolver here, there's no obvious benefit over
><generator src="{xmldb:///}">
><serialize type="xslt" src="stylesheets/site2xhtml.xsl">
>  
>

Exactly.

>For the precompiled xslt, it's better perhaps to modify the TraxTransformer
>to cache the Templates object.
>  
>

Templates *are* cached already. This is done by the XSLTProcessor component.

>For the generator, i think that the use must be limited to simplified
>stylesheets. Xsl try to be a template and a transform language (the root of
>the stylesheet itself can be <xsl:transform> or <xsl:stylesheet>). For
>templating, sometimes you don't need an input document, so you generally do
>
><generate src="empty.xml"/>
><transform src="mypage.xsl">
> <param/>
> ...
></transform>
><transform src="site2xhtml.xsl"/>
><serialize/>
>
>i would prefer here
>
><generate type="xslt" src="mypage.xsl>
> <param>
> ...
></generate>
><transform src="site2xhtml.xsl"/>
><serialize/>
>
>that way, the difference between templating and transforming xsl appear soon
>on the sitemap side, and because there's no xslt attribute, bad habits are
>not possible.
>  
>

Have a look in trunk at 
src/blocks/scratchpad/trunk/java/org/apache/cocoon/generation/TraxGenerator. 
It's already there :-)

It's probably time to promote this to the core.

Sylvain

-- 
Sylvain Wallez                        Anyware Technologies
http://apache.org/~sylvain            http://anyware-tech.com
Apache Software Foundation Member     Research & Technology Director


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