Re: [xmlblaster] Message Structure ..

[Marcel Ruff <mr at marcelruff.info>]

Arghad Arnaout wrote:
> Hallo Everybody:
> OK .. I have a question related to the message structure in XMLBlaster:
> What if We want to create a topic which accepts only well defined 
> messages structure,
> for example, what if I want to create a topic accepts the messages in 
> the following format:
> <book>
> <title>Title of the book</title>
> <ISBN>08324937424324</ISBN>
> <publisher>Publisher here .. </publisher>
> <pubYear>2006</pubYear>
> <cover>image of the cover</cover>
> </book>
>
> I searched the requirements and examples for such thing and I found 
> that we need define filter plug in to do that ..
> Am I right ???? or we can do that using a different way ..
>
> Thank you .. .
> ARGHAD
Hi Arghad,

Yes, a publish mime plugin is the way to go, see

 http://www.xmlblaster.org/MessageFlowPubSubOverview.html

it intercepts all incoming messages, does the schema check
and rejects unwanted messages.
See 
http://www.xmlblaster.org/xmlBlaster/doc/requirements/mime.plugin.publishfilter.html
You have to code such a plugin for your use case yourself (it is quite 
simple).

Note that subscribers can further filter the messages they
receive with specific "access mime plugins" using XPath, regex etc.
Such plugins are available with xmlBlaster already.


regards
Marcel