Hi Ian,
This is an issue that we have faced many times over the years, especially
over the last 2 as we moved a bunch of legacy interfaces off of an eGate
Interface Engine. Ugh.
What you are describing looks suspiciously like a bug we fixed in HAPI 2.1.
What version of the library are you using?
Cheers,
James
On Tue, Apr 30, 2013 at 6:14 PM, Ian Vowles <ian_vow...@health.qld.gov.au>wrote:
> One of the most common problems I face with vendors who claim to follow
> the HL7 standard is their failure to escape the delimiters.
>
> On a recent project I have implemented all the HL7 transforms in hapi, and
> everything was looking good until it was noted that a description field
> could have un-escaped ^ and & in it.
>
> The client asked me to reconstruct the correct content, which I was
> hopeful I could do. Unfortunately, I have hit a snag.
>
> Below is my test case code, and it's output. As you can see, there is
> some strangeness about what happens when you parse, terse and encode.
>
> Can anyone shed any light on how I might be able to reconstruct the text
> content of the field, despite it's failure to adhere to the standard?
>
> Thanks
> Ian
>
> Code:
> public void TestZAE() throws HL7Exception {
>
> ModelClassFactory cmf = new
> CustomModelClassFactory("au.gov.qld.health.sit.hl7");
> QH_ZPACK zPack = new QH_ZPACK(cmf);
> String message =
> "MSH|^~\\&|HAS|201^201|CIS^prjOrmisIn|00201|20120508000011||ORU^R01|9833|P|^2.4|||||||en\r"
> + "ZAE|20120528130312|Location Group|Arrival Transport
> Code|Ambulance Number|Not Used 1|Not Used 2|Not Used 3|Presenting
> Problem&C1SC1^Second Component&C2SC1^Third Component&C3SC1^Fourth
> Component&C4SC1";
> zPack.parse(message);
> Terser terser = new Terser(zPack);
> System.out.println(zPack.printStructure());
>
> System.out.println(zPack.getZAE().getZAE1_DateTimeSeen().getTimeOfAnEvent().getValueAsDate());
> ST presentingProblem = zPack.getZAE().getZAE8_PresentingProblem();
> System.out.println("Presenting Problem '" +
> presentingProblem.getValue() + "'");
> System.out.println("Presenting Problem has " +
> presentingProblem.getExtraComponents().numComponents() + " extra
> components.");
> String reconstructed = presentingProblem.getValue();
> System.out.println("Tersing /ZAE-8-1-2 '" +
> terser.get("/ZAE-8-1-2") + "'");
> System.out.println("Tersing /ZAE-8-2-2 '" +
> terser.get("/ZAE-8-2-2") + "'");
> ST testExample = new ST(zPack);
> testExample.parse("Presenting Problem&C1SC1^Second
> Component&C2SC1^Third Component&C3SC1");
> System.out.println(testExample.encode());
> for (int i = 2; i <
> presentingProblem.getExtraComponents().numComponents() + 2; i++) {
> Varies extraData =
> presentingProblem.getExtraComponents().getComponent(i - 2);
> int ec = extraData.getExtraComponents().numComponents();
> System.out.println("Extra component " + i + " has " + ec + "
> extra components.");
> String extraComponent = terser.get("/ZAE-8-" + i);
> int j = 1;
> String extraSubcomponent = terser.get("/ZAE-8-" + i + "-" + j);
> while (extraSubcomponent != null) {
> extraComponent = extraComponent + "&" + extraSubcomponent;
> j++;
> extraSubcomponent = terser.get("/ZAE-8-" + i + "-" + j);
> }
> reconstructed = reconstructed + "^" + extraComponent;
> }
> System.out.println("Presnting Problem '" + reconstructed + "'");
> }
> Result:
> QH_ZPACK (start)
> MSH -
> MSH|^~\&|HAS|201^201|CIS^prjOrmisIn|00201|20120508000011||ORU^R01|9833|P|^2.4|||||||en
> ZAE - ZAE|20120528130312|Location Group|Arrival Transport
> Code|Ambulance Number|Not Used 1|Not Used 2|Not Used 3|Presenting
> Problem^Second Component&C2SC1^Third Component&C3SC1^Fourth Component&C4SC1
> ZAL - Not populated
> ZAP - Not populated
> ZBD - Not populated
> ZCD - Not populated
> ZEI - Not populated
> ZMR - Not populated
> ZMV - Not populated
> ZPD - Not populated
> ZPX - Not populated
> ZRC - Not populated
> ZTD - Not populated
> ZV1 - Not populated
> ZVX - Not populated
> ZWL - Not populated
> QH_ZPACK (end)
>
> Mon May 28 13:03:12 EST 2012
> Presenting Problem 'Presenting Problem'
> Presenting Problem has 3 extra components.
> Tersing /ZAE-8-1-2 'Second Component'
> Tersing /ZAE-8-2-2 'C2SC1'
> Presenting Problem\T\C1SC1^Second Component^Third Component
> Extra component 2 has 0 extra components.
> Extra component 3 has 0 extra components.
> Extra component 4 has 0 extra components.
> Presenting Problem 'Presenting Problem^Second Component&Second
> Component&C2SC1^Third Component&Third Component&C3SC1^Fourth
> Component&Fourth Component&C4SC1'
>
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