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Example 16 with Function

use of org.hl7.fhir.dstu2.model.ExpressionNode.Function in project drug-formulary-ri by HL7-DaVinci.

the class ExampleServerDstu3IT method testWebsocketSubscription.

@Test
public void testWebsocketSubscription() throws Exception {
    /*
		 * Create subscription
		 */
    Subscription subscription = new Subscription();
    subscription.setReason("Monitor new neonatal function (note, age will be determined by the monitor)");
    subscription.setStatus(Subscription.SubscriptionStatus.REQUESTED);
    subscription.setCriteria("Observation?status=final");
    Subscription.SubscriptionChannelComponent channel = new Subscription.SubscriptionChannelComponent();
    channel.setType(Subscription.SubscriptionChannelType.WEBSOCKET);
    channel.setPayload("application/json");
    subscription.setChannel(channel);
    MethodOutcome methodOutcome = ourClient.create().resource(subscription).execute();
    IIdType mySubscriptionId = methodOutcome.getId();
    // Wait for the subscription to be activated
    waitForSize(1, () -> ourClient.search().forResource(Subscription.class).where(Subscription.STATUS.exactly().code("active")).cacheControl(new CacheControlDirective().setNoCache(true)).returnBundle(Bundle.class).execute().getEntry().size());
    /*
		 * Attach websocket
		 */
    WebSocketClient myWebSocketClient = new WebSocketClient();
    SocketImplementation mySocketImplementation = new SocketImplementation(mySubscriptionId.getIdPart(), EncodingEnum.JSON);
    myWebSocketClient.start();
    URI echoUri = new URI("ws://localhost:" + ourPort + "/hapi-fhir-jpaserver/websocket");
    ClientUpgradeRequest request = new ClientUpgradeRequest();
    ourLog.info("Connecting to : {}", echoUri);
    Future<Session> connection = myWebSocketClient.connect(mySocketImplementation, echoUri, request);
    Session session = connection.get(2, TimeUnit.SECONDS);
    ourLog.info("Connected to WS: {}", session.isOpen());
    /*
		 * Create a matching resource
		 */
    Observation obs = new Observation();
    obs.setStatus(Observation.ObservationStatus.FINAL);
    ourClient.create().resource(obs).execute();
    // Give some time for the subscription to deliver
    Thread.sleep(2000);
    /*
		 * Ensure that we receive a ping on the websocket
		 */
    waitForSize(1, () -> mySocketImplementation.myPingCount);
    /*
		 * Clean up
		 */
    ourClient.delete().resourceById(mySubscriptionId).execute();
}
Also used : CacheControlDirective(ca.uhn.fhir.rest.api.CacheControlDirective) WebSocketClient(org.eclipse.jetty.websocket.client.WebSocketClient) MethodOutcome(ca.uhn.fhir.rest.api.MethodOutcome) URI(java.net.URI) Observation(org.hl7.fhir.dstu3.model.Observation) ClientUpgradeRequest(org.eclipse.jetty.websocket.client.ClientUpgradeRequest) Subscription(org.hl7.fhir.dstu3.model.Subscription) IIdType(org.hl7.fhir.instance.model.api.IIdType) Session(org.eclipse.jetty.websocket.api.Session) Test(org.junit.Test)

Example 17 with Function

use of org.hl7.fhir.dstu2.model.ExpressionNode.Function in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method execute.

private List<Base> execute(ExecutionContext context, List<Base> focus, ExpressionNode exp, boolean atEntry) throws PathEngineException {
    // System.out.println("Evaluate {'"+exp.toString()+"'} on "+focus.toString());
    List<Base> work = new ArrayList<Base>();
    switch(exp.getKind()) {
        case Name:
            if (atEntry && exp.getName().equals("$this"))
                work.add(context.getThisItem());
            else
                for (Base item : focus) {
                    List<Base> outcome = execute(context, item, exp, atEntry);
                    for (Base base : outcome) if (base != null)
                        work.add(base);
                }
            break;
        case Function:
            List<Base> work2 = evaluateFunction(context, focus, exp);
            work.addAll(work2);
            break;
        case Constant:
            Base b = processConstant(context, exp.getConstant());
            if (b != null)
                work.add(b);
            break;
        case Group:
            work2 = execute(context, focus, exp.getGroup(), atEntry);
            work.addAll(work2);
    }
    if (exp.getInner() != null)
        work = execute(context, work, exp.getInner(), false);
    if (exp.isProximal() && exp.getOperation() != null) {
        ExpressionNode next = exp.getOpNext();
        ExpressionNode last = exp;
        while (next != null) {
            List<Base> work2 = preOperate(work, last.getOperation());
            if (work2 != null)
                work = work2;
            else if (last.getOperation() == Operation.Is || last.getOperation() == Operation.As) {
                work2 = executeTypeName(context, focus, next, false);
                work = operate(work, last.getOperation(), work2);
            } else {
                work2 = execute(context, focus, next, true);
                work = operate(work, last.getOperation(), work2);
            // System.out.println("Result of {'"+last.toString()+" "+last.getOperation().toCode()+" "+next.toString()+"'}: "+focus.toString());
            }
            last = next;
            next = next.getOpNext();
        }
    }
    // System.out.println("Result of {'"+exp.toString()+"'}: "+work.toString());
    return work;
}
Also used : ExpressionNode(org.hl7.fhir.dstu2.model.ExpressionNode) ArrayList(java.util.ArrayList) ArrayList(java.util.ArrayList) List(java.util.List) Base(org.hl7.fhir.dstu2.model.Base)

Example 18 with Function

use of org.hl7.fhir.dstu2.model.ExpressionNode.Function in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method executeType.

private TypeDetails executeType(ExecutionTypeContext context, TypeDetails focus, ExpressionNode exp, boolean atEntry) throws PathEngineException, DefinitionException {
    // System.out.println("Evaluate {'"+exp.toString()+"'} on "+focus.toString());
    TypeDetails result = new TypeDetails(null);
    switch(exp.getKind()) {
        case Name:
            if (atEntry && exp.getName().equals("$this"))
                result.update(context.getThisItem());
            else {
                for (String s : focus.getTypes()) {
                    result.update(executeType(s, exp, atEntry));
                }
                if (result.hasNoTypes())
                    throw new PathEngineException("The name " + exp.getName() + " is not valid for any of the possible types: " + focus.describe());
            }
            break;
        case Function:
            result.update(evaluateFunctionType(context, focus, exp));
            break;
        case Constant:
            result.addType(readConstantType(context, exp.getConstant()));
            break;
        case Group:
            result.update(executeType(context, focus, exp.getGroup(), atEntry));
    }
    exp.setTypes(result);
    if (exp.getInner() != null) {
        result = executeType(context, result, exp.getInner(), false);
    }
    if (exp.isProximal() && exp.getOperation() != null) {
        ExpressionNode next = exp.getOpNext();
        ExpressionNode last = exp;
        while (next != null) {
            TypeDetails work;
            if (last.getOperation() == Operation.Is || last.getOperation() == Operation.As)
                work = executeTypeName(context, focus, next, atEntry);
            else
                work = executeType(context, focus, next, atEntry);
            result = operateTypes(result, last.getOperation(), work);
            last = next;
            next = next.getOpNext();
        }
        exp.setOpTypes(result);
    }
    return result;
}
Also used : TypeDetails(org.hl7.fhir.dstu2.model.ExpressionNode.TypeDetails) ExpressionNode(org.hl7.fhir.dstu2.model.ExpressionNode) PathEngineException(org.hl7.fhir.exceptions.PathEngineException)

Example 19 with Function

use of org.hl7.fhir.dstu2.model.ExpressionNode.Function in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method parseExpression.

private ExpressionNode parseExpression(FHIRLexer lexer, boolean proximal) throws FHIRLexerException {
    ExpressionNode result = new ExpressionNode(lexer.nextId());
    SourceLocation c = lexer.getCurrentStartLocation();
    result.setStart(lexer.getCurrentLocation());
    // special:
    if (lexer.getCurrent().equals("-")) {
        lexer.take();
        lexer.setCurrent("-" + lexer.getCurrent());
    }
    if (lexer.getCurrent().equals("+")) {
        lexer.take();
        lexer.setCurrent("+" + lexer.getCurrent());
    }
    if (lexer.isConstant(false)) {
        checkConstant(lexer.getCurrent(), lexer);
        result.setConstant(lexer.take());
        result.setKind(Kind.Constant);
        result.setEnd(lexer.getCurrentLocation());
    } else if ("(".equals(lexer.getCurrent())) {
        lexer.next();
        result.setKind(Kind.Group);
        result.setGroup(parseExpression(lexer, true));
        if (!")".equals(lexer.getCurrent()))
            throw lexer.error("Found " + lexer.getCurrent() + " expecting a \")\"");
        result.setEnd(lexer.getCurrentLocation());
        lexer.next();
    } else {
        if (!lexer.isToken() && !lexer.getCurrent().startsWith("\""))
            throw lexer.error("Found " + lexer.getCurrent() + " expecting a token name");
        if (lexer.getCurrent().startsWith("\""))
            result.setName(lexer.readConstant("Path Name"));
        else
            result.setName(lexer.take());
        result.setEnd(lexer.getCurrentLocation());
        if (!result.checkName())
            throw lexer.error("Found " + result.getName() + " expecting a valid token name");
        if ("(".equals(lexer.getCurrent())) {
            Function f = Function.fromCode(result.getName());
            FunctionDetails details = null;
            if (f == null) {
                details = hostServices != null ? hostServices.resolveFunction(result.getName()) : null;
                if (details == null)
                    throw lexer.error("The name " + result.getName() + " is not a valid function name");
                f = Function.Custom;
            }
            result.setKind(Kind.Function);
            result.setFunction(f);
            lexer.next();
            while (!")".equals(lexer.getCurrent())) {
                result.getParameters().add(parseExpression(lexer, true));
                if (",".equals(lexer.getCurrent()))
                    lexer.next();
                else if (!")".equals(lexer.getCurrent()))
                    throw lexer.error("The token " + lexer.getCurrent() + " is not expected here - either a \",\" or a \")\" expected");
            }
            result.setEnd(lexer.getCurrentLocation());
            lexer.next();
            checkParameters(lexer, c, result, details);
        } else
            result.setKind(Kind.Name);
    }
    ExpressionNode focus = result;
    if ("[".equals(lexer.getCurrent())) {
        lexer.next();
        ExpressionNode item = new ExpressionNode(lexer.nextId());
        item.setKind(Kind.Function);
        item.setFunction(ExpressionNode.Function.Item);
        item.getParameters().add(parseExpression(lexer, true));
        if (!lexer.getCurrent().equals("]"))
            throw lexer.error("The token " + lexer.getCurrent() + " is not expected here - a \"]\" expected");
        lexer.next();
        result.setInner(item);
        focus = item;
    }
    if (".".equals(lexer.getCurrent())) {
        lexer.next();
        focus.setInner(parseExpression(lexer, false));
    }
    result.setProximal(proximal);
    if (proximal) {
        while (lexer.isOp()) {
            focus.setOperation(ExpressionNode.Operation.fromCode(lexer.getCurrent()));
            focus.setOpStart(lexer.getCurrentStartLocation());
            focus.setOpEnd(lexer.getCurrentLocation());
            lexer.next();
            focus.setOpNext(parseExpression(lexer, false));
            focus = focus.getOpNext();
        }
        result = organisePrecedence(lexer, result);
    }
    return result;
}
Also used : SourceLocation(org.hl7.fhir.dstu2.model.ExpressionNode.SourceLocation) Function(org.hl7.fhir.dstu2.model.ExpressionNode.Function) FunctionDetails(org.hl7.fhir.dstu2.utils.FHIRPathEngine.IEvaluationContext.FunctionDetails) ExpressionNode(org.hl7.fhir.dstu2.model.ExpressionNode)

Example 20 with Function

use of org.hl7.fhir.dstu2.model.ExpressionNode.Function in project org.hl7.fhir.core by hapifhir.

the class FHIRPathEngine method executeType.

private TypeDetails executeType(ExecutionTypeContext context, TypeDetails focus, ExpressionNode exp, boolean atEntry) throws PathEngineException, DefinitionException {
    TypeDetails result = new TypeDetails(null);
    switch(exp.getKind()) {
        case Name:
            if (atEntry && exp.getName().equals("$this"))
                result.update(context.getContext());
            else {
                for (String s : focus.getTypes()) {
                    result.update(executeType(s, exp, atEntry));
                }
                if (result.hasNoTypes())
                    throw new PathEngineException("The name " + exp.getName() + " is not valid for any of the possible types: " + focus.describe());
            }
            break;
        case Function:
            result.update(evaluateFunctionType(context, focus, exp));
            break;
        case Constant:
            result.addType(readConstantType(context, exp.getConstant()));
            break;
        case Group:
            result.update(executeType(context, focus, exp.getGroup(), atEntry));
    }
    exp.setTypes(result);
    if (exp.getInner() != null) {
        result = executeType(context, result, exp.getInner(), false);
    }
    if (exp.isProximal() && exp.getOperation() != null) {
        ExpressionNode next = exp.getOpNext();
        ExpressionNode last = exp;
        while (next != null) {
            TypeDetails work;
            if (last.getOperation() == Operation.Is || last.getOperation() == Operation.As)
                work = executeTypeName(context, focus, next, atEntry);
            else
                work = executeType(context, focus, next, atEntry);
            result = operateTypes(result, last.getOperation(), work);
            last = next;
            next = next.getOpNext();
        }
        exp.setOpTypes(result);
    }
    return result;
}
Also used : TypeDetails(org.hl7.fhir.dstu2016may.model.ExpressionNode.TypeDetails) ExpressionNode(org.hl7.fhir.dstu2016may.model.ExpressionNode) PathEngineException(org.hl7.fhir.exceptions.PathEngineException)

Aggregations

Test (org.junit.jupiter.api.Test)17 List (java.util.List)8 FhirPath (au.csiro.pathling.fhirpath.FhirPath)7 Reference (org.hl7.fhir.r4.model.Reference)7 SpringBootTest (org.springframework.boot.test.context.SpringBootTest)7 ParserContext (au.csiro.pathling.fhirpath.parser.ParserContext)6 MethodOutcome (ca.uhn.fhir.rest.api.MethodOutcome)6 URI (java.net.URI)6 Row (org.apache.spark.sql.Row)6 Session (org.eclipse.jetty.websocket.api.Session)6 ClientUpgradeRequest (org.eclipse.jetty.websocket.client.ClientUpgradeRequest)6 WebSocketClient (org.eclipse.jetty.websocket.client.WebSocketClient)6 IIdType (org.hl7.fhir.instance.model.api.IIdType)6 Complex (org.hl7.fhir.r4.utils.formats.Turtle.Complex)6 FhirReference (org.openmrs.module.fhir2.model.FhirReference)6 FhirTask (org.openmrs.module.fhir2.model.FhirTask)6 DatasetBuilder (au.csiro.pathling.test.builders.DatasetBuilder)5 ElementPathBuilder (au.csiro.pathling.test.builders.ElementPathBuilder)5 ParserContextBuilder (au.csiro.pathling.test.builders.ParserContextBuilder)5 ArrayList (java.util.ArrayList)5