Re: [HAPI-devel] Using a non-standard message definition in the simpleserver processMessage

[James A. <ja...@ja...>]

Hi Ian,

There are two options here. The traditional way is to use "custom
packages". To do this, you create your custom structure, call it "ORU_R01",
put it in a specific package and create a property file that points to it.
There is a description of this functionality here:

http://hl7api.sourceforge.net/apidocs/ca/uhn/hl7v2/parser/DefaultModelClassFactory.html#packageList%28java.lang.String%29

One other way you might look to do this is with a new implementation of a
ModelClassFactory which always instantiates your structure and then passing
it to the parser that your SimpleServer uses. If you only ever receive this
one type of message on this particular interface, this is probably your far
easier option. (Incidentally, if you do this and happen to want to
contribute back an example, we would certainly welcome that :) )

Cheers,
James

On Thu, May 17, 2012 at 12:58 AM, Ian Vowles
<Ian...@he...>wrote:

>  We have a vendor who sends us non-standard messages which resemble ORU
> R01, and the MSH states that they are ORU R01.
>
> A class to represent the message has been built, and it works well, except
> when we want to use it in the processMessage method of a SimpleServer.
> processMessage requires the message to be Message, which throws an
> exception if we try to cast it to our specific message class.
>
> Whilst we can get things working by encoding the Message object and
> parsing the result with our specific implementation, this doesn't feel
> light the 'right way' to do it.
>
> How can we get the messageProcessor method to deal with our specific
> message implementation?
>
> Thanks
> Ian
>
>
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