Examples of Terser

ca.uhn.hl7v2.util.Terser

Wraps a message to provide access to fields using a terse location specification syntax. For example:

terser.set("MSH-9-3", "ADT_A01");
can be used instead of
message.getMSH().getMessageType().getMessageStructure().setValue("ADT_A01");

The syntax of a location spec is as follows:

location_spec: segment_path_spec "-" field ["(" rep ")"] ["-" component ["-" subcomponent]]

... where rep, field, component, and subcomponent are integers (representing, respectively, the field repetition (starting at 0), and the field number, component number, and subcomponent numbers (starting at 1). Omitting the rep is equivalent to specifying 0; omitting the component or subcomponent is equivalent to specifying 1.

The syntax for the segment_path_spec is as follows:

segment_path_spec: ["/"] (group_spec ["(" rep ")"] "/")* segment_spec ["(" rep ")"]

... where rep has the same meaning as for fields.

A leading "/" indicates that navigation to the location begins at the root of the message; omitting this indicates that navigation begins at the current location of the underlying SegmentFinder (see getFinder() -- this allows manual navigation if desired). The syntax for group_spec is:

group_spec: ["."] group_name_pattern

Here, a . indicates that the group should be searched for (using a SegmentFinder) starting at the current location in the message. The wildcards "*" and "?" represent any number of arbitrary characters, and a single arbitrary character, respectively. For example, "M*" and "?S?" match MSH. The first group with a name that matches the given group_name_pattern will be matched.

The segment_spec is analogous to the group_spec.

As another example, the following subcomponent in an SIU_S12 message:

msg.getSIU_S12_RGSAISNTEAIGNTEAILNTEAIPNTE(1).getSIU_S12_AIGNTE().getAIG().getResourceGroup(1).getIdentifier();

... is referenced by all of the following location_spec:

/SIU_S12_RGSAISNTEAIGNTEAILNTEAIPNTE(1)/SIU_S12_AIGNTE/AIG-5(1)-1 /*AIG*(1)/SIU_S12_AIGNTE/AIG-5(1)-1 /*AIG*(1)/.AIG-5(1)
The search function only iterates through rep 0 of each group. Thus if rep 0 of the first group in this example was desired instead of rep 1, the following syntax would also work (since there is only one AIG segment position in SUI_S12): /.AIG-5(1) @author Bryan Tripp @author Ryan W. Gross (General Electric Corporation - Healthcare IT).




Examples of ca.uhn.hl7v2.util.Terser
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208           public void run() {
            try {
              // get message ID
              String ID = generator.getID();
              Message out = parser.parse(outText);
              Terser tOut = new Terser(out);
              tOut.set("/MSH-10", ID);


              // send, get response
              Message in = initiator.sendAndReceive(out);
              // get ACK ID
              Terser tIn = new Terser(in);
              String ackID = tIn.get("/MSA-2");
              if (ID.equals(ackID)) {
                System.out.println("OK - ack ID matches");
              } else {
                throw new RuntimeException(
                    "Ack ID for message " + ID + " is "

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171       String version = inbound.getVersion();
      if (version == null)
        version = "2.4"; // TODO: This should be set dynamically based on available HL7 version
      clazz = mcf.getMessageClass("ACK", version, false);
      Message out = clazz.newInstance();
      Terser terser = new Terser(out);


      // populate outbound MSH using data from inbound message ...
      Segment outHeader = (Segment) out.get("MSH");
      fillResponseHeader(inboundHeader, outHeader);


      terser.set("/MSH-9-1", "ACK");
      terser.set("/MSH-9-2", Terser.get(inboundHeader, 9, 0, 2, 1));
      terser.set("/MSH-12", Terser.get(inboundHeader, 12, 0, 1, 1));
      terser.set("/MSA-1", "AA");
      terser.set("/MSA-2", Terser.get(inboundHeader, 10, 0, 1, 1));
      return out;


    } catch (Exception e) {
      throw new HL7Exception("Can't instantiate ACK", e);
    }

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Examples of ca.uhn.hl7v2.util.Terser
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122         
        return (ValidationException[]) problems.toArray(new ValidationException[0]);
    }
    
    private String[] getDeclaredProfileIDs(Message theMessage) throws HL7Exception {
        Terser t = new Terser(theMessage);
        boolean noMore = false;
        int c = 0;
        List<String> declaredProfiles = new ArrayList<String>(8);
        while (!noMore) {
            String path = "MSH-21(" + c++ + ")";
            String idRep = t.get(path);
            //FIXME fails if empty rep precedes full rep ... should add getAll() to Terser and use that
            if (idRep == null || idRep.equals("")) {
                noMore = true;
            } else {
                declaredProfiles.add(idRep);

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Examples of ca.uhn.hl7v2.util.Terser
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107       }
    
      break;
    }
    
    String responseControlId = new Terser(response.getMessage()).get("/MSH-10");
    ourLog.info("Received response to ID {} with ID {} in {} ms", new Object[] {controlId, responseControlId, delay});
    
    return response.getMessage();
  }

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Examples of ca.uhn.hl7v2.util.Terser
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123     public Object unmarshal(Exchange exchange, InputStream inputStream) throws Exception {
        String body = ExchangeHelper.convertToMandatoryType(exchange, String.class, inputStream);
        Message message = HL7Converter.parse(body, parser);


        // add MSH fields as message out headers
        Terser terser = new Terser(message);
        for (Map.Entry<String, String> entry : HEADER_MAP.entrySet()) {
            exchange.getOut().setHeader(entry.getKey(), terser.get(entry.getValue()));
        }
        exchange.getOut().setHeader(HL7_CONTEXT, hapiContext);
        return message;
    }

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Examples of ca.uhn.hl7v2.util.Terser
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47 
            @Override
            public Object evaluate(Exchange exchange) {
                Message message = exchange.getIn().getBody(Message.class);
                try {
                    return new Terser(message).get(expression.trim());
                } catch (HL7Exception e) {
                    throw ObjectHelper.wrapRuntimeCamelException(e);
                }
            }


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Examples of ca.uhn.hl7v2.util.Terser
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64         assertTrue(xml.contains("<ORM_O01"));
        template.sendBody("direct:unmarshalOkXml", xml);


        assertMockEndpointsSatisfied();
        Message received = mock.getReceivedExchanges().get(0).getIn().getMandatoryBody(Message.class);
        assertEquals("O01", new Terser(received).get("MSH-9-2"));
    }    

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110       }
    
      break;
    }
    
    String responseControlId = new Terser(response.getMessage()).get("/MSH-10");
    ourLog.info("Received response to ID {} with ID {} in {} ms", new Object[] {controlId, responseControlId, delay});
    
    return response.getMessage();
  }

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Examples of ca.uhn.hl7v2.util.Terser
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118     public Object unmarshal(Exchange exchange, InputStream inputStream) throws Exception {
        String body = ExchangeHelper.convertToMandatoryType(exchange, String.class, inputStream);
        Message message = HL7Converter.parse(body, parser);


        // add MSH fields as message out headers
        Terser terser = new Terser(message);
        for (Map.Entry<String, String> entry : HEADER_MAP.entrySet()) {
            exchange.getOut().setHeader(entry.getKey(), terser.get(entry.getValue()));
        }
        return message;
    }

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Examples of ca.uhn.hl7v2.util.Terser
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62         assertTrue(xml.contains("<ORM_O01"));
        template.sendBody("direct:unmarshalOkXml", xml);


        assertMockEndpointsSatisfied();
        Message received = mock.getReceivedExchanges().get(0).getIn().getMandatoryBody(Message.class);
        assertEquals("O01", new Terser(received).get("MSH-9-2"));
    }    

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