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List:       xml-cocoon-users
Subject:    Re: Why are ReadDOMSession and WriteDOMSession transformers?
From:       Joerg Heinicke <joerg.heinicke () gmx ! de>
Date:       2004-06-30 21:22:03
Message-ID: 40E32EFB.3010607 () gmx ! de
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On 30.06.2004 23:05, Terry Brick wrote:

> I guess I'm just not grasping some concepts.  Could somebody explain to me why we have
> ReadDOMSessionTransformer and WriteDOMSessionTransformer instead of ReadDOMSessionGenerator and
> WriteDOMSessionGenerator?
> I mean, shouldn't a tranformer take existing XML in the pipeline and transform it using XSL?  Well
> my DOM object is in the session, not the pipleline....
> I ask this because I have a situation where I need to put a DOM that's in the session into the
> pipeline and THEN transform it... but Cocoon is complaining that I'm trying to transform something
> without a generator first!  But the XML i need to 'generate' is only accessible by the
> 'transformer' (ReadDOMSessionTransformer)!

Yes, you are absolutely correct. This is why I absolutely don't like 
them, they are hacks. The same is true for the SourceWritingTransformer. 
In the meantime there is a valid replacement available with the 
XModuleSource: http://wiki.cocoondev.org/Wiki.jsp?page=XModuleSource.

Joerg

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