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From Vadim Gritsenko <>
Subject Re: Postable block protocol
Date Thu, 26 Oct 2006 20:01:49 GMT
Daniel Fagerstrom wrote:
> What I would propose is to create some new pipeline components that 
> calls postable sources, and make the block protocol postable. Then we 
> have four cases for the different combinations of XML or non XML input 
> and output respectably:
> non XML -> non XML
> <map:read type="service" src="block:b:/foo1"/>
> non XML -> XML
> <map:generate type="service" src="input.txt">
>   <map:parameter name="service" value="block:b:/foo2"/>
> </map:generate>
> XML -> XML
> <map:transform type="service" src="block:b:/foo3"/>
> XML -> non XML
> <map:serialize type="service" src="block:b:/foo4"/>

It took me at least 5 min to understand what you mean... So I want to confirm 
that I got it right. :)

Do you mean that proposed "service" Reader / Generator / Transformer will 
resolve the Source object passed to it and will try to "forward" post body (if 
any) of the current Request into that Source?

Do I get it right that you are proposing to introduce new PostableSource interface?

And WRT to ModifiableSource, I do not think it is a good match here. 
Semantically, good old Source.getInputStream() corresponds to GET, 
ModifiableSource.getOutputStream() corresponds to PUT, so it looks like 
'postable' source should not be using ModifiableSource but introduce its own 


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