James,
I don't think that solution will work.
The compiler will have already resolved the ED reference to be the class
in the segment package.
Merely deleting that class will not cause it to resolve to the ED from
the datatype package.
I think the only solution is to recompile the UAC.java class with the
getUserAuthenticationCredential method replaced with the following text.
public ca.uhn.hl7v2.model.v26.datatype.ED
getUserAuthenticationCredential() {
ca.uhn.hl7v2.model.v26.datatype.ED ret = null;
try {
Type t = this.getField(2, 0);
ret = (ca.uhn.hl7v2.model.v26.datatype.ED)t;
} catch (ClassCastException cce) {
HapiLogFactory.getHapiLog(this.getClass()).error("Unexpected
problem obtaining field value. This is a bug.", cce);
throw new RuntimeException(cce);
} catch (HL7Exception he) {
HapiLogFactory.getHapiLog(this.getClass()).error("Unexpected
problem obtaining field value. This is a bug.", he);
throw new RuntimeException(he);
}
return ret;
}
Chris Selwyn
On 07/01/2010 02:45, James Agnew wrote:
> Hi Marc,
>
> Your analysis is exactly correct I would say, the problem is the
> conflicting segment class called "ED". This class shouldn't be there,
> it is created because of an unexpected row in the HL7 database which
> appears to be a bug with the database. Frank Oemig's (the maintainer
> of the HL7 database) website lists this as an old but unsolved issue
> in section 1.2 here: http://www.oemig.de/HL7/hl7v26fs.htm . I don't
> have a copy of the spec handy at the moment, but it might shed some
> light on this in section 7.11.2 as mentioned on Frank's page.
>
> Probably the right thing to do is to fix the structure JAR generator
> so that it doesn't generate this segment. I'll make this change for
> the next version of the HAPI. I am hoping to put out a new beta quite
> soon to fix a few issues including the one you mention where there
> seems to have been a problem with the build process, resulting in the
> jars for HL7 0.5.1 and 0.6 being empty.
>
> In the mean time probably your easiest fix would be to unzip the 0.6
> structures JAR, delete the ED.class in the segments package, and
> re-zip it up.
>
> Cheers,
> James
>
> On Tue, Jan 5, 2010 at 9:53 AM,<[email protected]> wrote:
>
>> Hello,
>>
>> I'm currently experiencing an exception showing up in log4j's log output :
>>
>> 15:05:57,516 ERROR UAC:56 - Can't instantiate
>> ca.uhn.hl7v2.model.v26.segment.UAC
>> ca.uhn.hl7v2.HL7Exception: Class ca.uhn.hl7v2.model.v26.segment.ED does not
>> inherit from ca.on.uhn.datatype.Type
>>
>> I have looked at the code in UAC class and found this :
>>
>> 060 ED ret = null;
>> 061 try {
>> 062 Type t = this.getField(2, 0);
>> 063 ret = (ED)t;
>> 064 } catch (ClassCastException cce) {
>>
>> This class is imporing all files in model.v26.datatype and happens to be
>> part of model.v26.segment, both contain a class called ED.
>>
>> Is it possible that UAC class is trying to cast the variable t of type Type
>> in the segment class ED instead of the datatype class ED thus resulting in
>> the ClassCastException ?
>>
>> Can anyone help me out ?
>> Thanks.
>>
>> PS : I'm using HAPI v0.6 because when downloading HAPI v1.0beta1 I have
>> gotten empty datatype and segment packages...
>>
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