Hi Laurent,
If you make your Application object also implement
ApplicationExceptionHandler, there is a callback which will be invoked
whenever a parse error occurs. This at least lets you trap the error if you
just want to know about it.
If what you actually want is a way to not have HAPI choke when you get
version-less messages, the easiest way would probably be to subclass
PipeParser and override getVersion(String) to always return (for example)
"2.5".
Cheers,
James
On Thu, Nov 8, 2012 at 9:49 AM, LDH <l...@360fresh.com> wrote:
> Hello,
>
> I have written a class that extends ca.uhn.hl7v2.app.Application. I have
> implemented the ProcessMessage() method. I initialize everything as follows:
>
> LowerLayerProtocol llp = LowerLayerProtocol.makeLLP(); // The
> transport protocol
> PipeParser parser = new PipeParser(new
> CanonicalModelClassFactory("2.6")); // The message parser
> parser.setValidationContext(new NoValidation());
> HL7Listener = new SimpleServer(PORT, llp, parser);
> Application handler = new HL7ListenerApp();
> HL7Listener.registerApplication("*", "*", handler);
> HL7Listener.start();
>
> I am working with a new system and we get bad messages that HAPI cannot
> parse. For example, we get ADT-A08 messages where the MSH has no VersionId,
> which causes issues :) They are meant for custom software that is not
> really proper HL7. I want to ignore those, but my problem is that HAPI
> bails out before i even get a chance to handle the error in my
> ProcessMessage() method.
>
> ca.uhn.hl7v2.HL7Exception: Can't find version ID - MSH has only 10 fields.
> at ca.uhn.hl7v2.parser.PipeParser.getVersion(PipeParser.java:965)
> at ca.uhn.hl7v2.parser.Parser.parse(Parser.java:164)
> at ca.uhn.hl7v2.parser.PipeParser.parse(PipeParser.java:885)
>
> Is there a way to catch that exception and return a custom ACK?
>
>
> ------------------------------
> *Laurent (Harry) Hasson*
> Co-Founder, 360Fresh.com
>
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