Examples with HapiContext ca.uhn.hl7v2.HapiContext used on opensource projects

Example 1 with HapiContext

use of ca.uhn.hl7v2.HapiContext in project camel by apache.

the class HL7ValidateTest method createRouteBuilder.

protected RouteBuilder createRouteBuilder() throws Exception {
    HapiContext hapiContext = new DefaultHapiContext();
    hapiContext.setValidationContext(new NoValidation());
    Parser p = new GenericParser(hapiContext);
    hl7 = new HL7DataFormat();
    hl7.setParser(p);
    /*
         * Let's start by adding a validation rule to the default validation
         * that disallows PID-2 to be empty.
         */
    ValidationRuleBuilder builder = new ValidationRuleBuilder() {

        private static final long serialVersionUID = 1L;

        @Override
        protected void configure() {
            forVersion(Version.V24).message("ADT", "*").terser("PID-2", not(empty()));
        }
    };
    ValidationContext customValidationContext = ValidationContextFactory.fromBuilder(builder);
    HapiContext customContext = new DefaultHapiContext(customValidationContext);
    final Parser customParser = new GenericParser(customContext);
    return new RouteBuilder() {

        public void configure() throws Exception {
            from("direct:unmarshalFailed").unmarshal().hl7().to("mock:unmarshal");
            from("direct:unmarshalOk").unmarshal().hl7(false).to("mock:unmarshal");
            from("direct:unmarshalOkCustom").unmarshal(hl7).to("mock:unmarshal");
            from("direct:start1").marshal().hl7(customParser).to("mock:end");
            from("direct:start2").marshal().hl7(true).to("mock:end");
        }
    };
}

Example 2 with HapiContext

use of ca.uhn.hl7v2.HapiContext in project nifi by apache.

the class TestHL7Query method createMessage.

private HL7Message createMessage(final String msgText) throws HL7Exception, IOException {
    final HapiContext hapiContext = new DefaultHapiContext();
    hapiContext.setValidationContext(ValidationContextFactory.noValidation());
    final PipeParser parser = hapiContext.getPipeParser();
    final Message message = parser.parse(msgText);
    return new HapiMessage(message);
}

Example 3 with HapiContext

use of ca.uhn.hl7v2.HapiContext in project nifi by apache.

the class RouteHL7 method onTrigger.

@Override
public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
    FlowFile flowFile = session.get();
    if (flowFile == null) {
        return;
    }
    final Charset charset = Charset.forName(context.getProperty(CHARACTER_SET).evaluateAttributeExpressions(flowFile).getValue());
    final byte[] buffer = new byte[(int) flowFile.getSize()];
    session.read(flowFile, new InputStreamCallback() {

        @Override
        public void process(final InputStream in) throws IOException {
            StreamUtils.fillBuffer(in, buffer);
        }
    });
    @SuppressWarnings("resource") final HapiContext hapiContext = new DefaultHapiContext();
    hapiContext.setValidationContext((ca.uhn.hl7v2.validation.ValidationContext) ValidationContextFactory.noValidation());
    final PipeParser parser = hapiContext.getPipeParser();
    final String hl7Text = new String(buffer, charset);
    final HL7Message message;
    try {
        final Message hapiMessage = parser.parse(hl7Text);
        message = new HapiMessage(hapiMessage);
    } catch (final Exception e) {
        getLogger().error("Failed to parse {} as HL7 due to {}; routing to failure", new Object[] { flowFile, e });
        session.transfer(flowFile, REL_FAILURE);
        return;
    }
    final Set<String> matchingRels = new HashSet<>();
    final Map<Relationship, HL7Query> queryMap = queries;
    for (final Map.Entry<Relationship, HL7Query> entry : queryMap.entrySet()) {
        final Relationship relationship = entry.getKey();
        final HL7Query query = entry.getValue();
        final QueryResult result = query.evaluate(message);
        if (result.isMatch()) {
            FlowFile clone = session.clone(flowFile);
            clone = session.putAttribute(clone, "RouteHL7.Route", relationship.getName());
            session.transfer(clone, relationship);
            session.getProvenanceReporter().route(clone, relationship);
            matchingRels.add(relationship.getName());
        }
    }
    session.transfer(flowFile, REL_ORIGINAL);
    getLogger().info("Routed a copy of {} to {} relationships: {}", new Object[] { flowFile, matchingRels.size(), matchingRels });
}

Example 4 with HapiContext

use of ca.uhn.hl7v2.HapiContext in project streamsx.health by IBMStreams.

the class TestServer method main.

public static void main(String[] args) {
    try {
        HapiContext ctx = new DefaultHapiContext();
        CanonicalModelClassFactory mcf = new CanonicalModelClassFactory("2.6");
        ctx.setModelClassFactory(mcf);
        ctx.setValidationRuleBuilder(new NoValidationBuilder());
        ctx.setExecutorService(Executors.newCachedThreadPool());
        HL7Service server = ctx.newServer(8082, false);
        server.registerApplication(new HapiMessageHandler(null));
        server.registerConnectionListener(new ConnectionListener() {

            @Override
            public void connectionReceived(Connection c) {
                System.out.println("Connection received.");
            }

            @Override
            public void connectionDiscarded(Connection c) {
                System.out.println("Connection discarded.");
            }
        });
        server.startAndWait();
        ctx.close();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

Example 5 with HapiContext

use of ca.uhn.hl7v2.HapiContext in project nifi by apache.

the class ExtractHL7Attributes method onTrigger.

@Override
public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
    FlowFile flowFile = session.get();
    if (flowFile == null) {
        return;
    }
    final Charset charset = Charset.forName(context.getProperty(CHARACTER_SET).evaluateAttributeExpressions(flowFile).getValue());
    final Boolean useSegmentNames = context.getProperty(USE_SEGMENT_NAMES).asBoolean();
    final Boolean parseSegmentFields = context.getProperty(PARSE_SEGMENT_FIELDS).asBoolean();
    final Boolean skipValidation = context.getProperty(SKIP_VALIDATION).asBoolean();
    final String inputVersion = context.getProperty(HL7_INPUT_VERSION).getValue();
    final byte[] buffer = new byte[(int) flowFile.getSize()];
    session.read(flowFile, new InputStreamCallback() {

        @Override
        public void process(final InputStream in) throws IOException {
            StreamUtils.fillBuffer(in, buffer);
        }
    });
    @SuppressWarnings("resource") final HapiContext hapiContext = new DefaultHapiContext();
    if (!inputVersion.equals("autodetect")) {
        hapiContext.setModelClassFactory(new CanonicalModelClassFactory(inputVersion));
    }
    if (skipValidation) {
        hapiContext.setValidationContext((ValidationContext) ValidationContextFactory.noValidation());
    }
    final PipeParser parser = hapiContext.getPipeParser();
    final String hl7Text = new String(buffer, charset);
    try {
        final Message message = parser.parse(hl7Text);
        final Map<String, String> attributes = getAttributes(message, useSegmentNames, parseSegmentFields);
        flowFile = session.putAllAttributes(flowFile, attributes);
        getLogger().debug("Added the following attributes for {}: {}", new Object[] { flowFile, attributes });
    } catch (final HL7Exception e) {
        getLogger().error("Failed to extract attributes from {} due to {}", new Object[] { flowFile, e });
        session.transfer(flowFile, REL_FAILURE);
        return;
    }
    session.transfer(flowFile, REL_SUCCESS);
}