Examples with DMNContext org.kie.dmn.api.core.DMNContext used on opensource projects

Example 1 with DMNContext

use of org.kie.dmn.api.core.DMNContext in project drools by kiegroup.

the class DMNListEvaluator method evaluate.

@Override
public EvaluatorResult evaluate(DMNRuntimeEventManager eventManager, DMNResult dmnr) {
    DMNResultImpl result = (DMNResultImpl) dmnr;
    List<Object> results = new ArrayList<>();
    DMNContext previousContext = result.getContext();
    DMNContextImpl dmnContext = (DMNContextImpl) previousContext.clone();
    result.setContext(dmnContext);
    try {
        int index = 0;
        for (DMNExpressionEvaluator ee : elements) {
            try {
                EvaluatorResult er = ee.evaluate(eventManager, result);
                if (er.getResultType() == ResultType.SUCCESS) {
                    results.add(er.getResult());
                } else {
                    MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, null, null, Msg.ERR_EVAL_LIST_ELEMENT_ON_POSITION_ON_LIST, index + 1, name);
                    return new EvaluatorResultImpl(results, ResultType.FAILURE);
                }
            } catch (Exception e) {
                MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, e, null, Msg.ERR_EVAL_LIST_ELEMENT_ON_POSITION_ON_LIST, index + 1, name);
                return new EvaluatorResultImpl(results, ResultType.FAILURE);
            } finally {
                index++;
            }
        }
    } finally {
        result.setContext(previousContext);
    }
    return new EvaluatorResultImpl(results, ResultType.SUCCESS);
}

Example 2 with DMNContext

use of org.kie.dmn.api.core.DMNContext in project drools by kiegroup.

the class DMNRelationEvaluator method evaluate.

@Override
public EvaluatorResult evaluate(DMNRuntimeEventManager eventManager, DMNResult dmnr) {
    DMNResultImpl result = (DMNResultImpl) dmnr;
    List<Map<String, Object>> results = new ArrayList<>();
    DMNContext previousContext = result.getContext();
    DMNContextImpl dmnContext = (DMNContextImpl) previousContext.clone();
    result.setContext(dmnContext);
    try {
        for (int rowIndex = 0; rowIndex < rows.size(); rowIndex++) {
            List<DMNExpressionEvaluator> row = rows.get(rowIndex);
            Map<String, Object> element = new HashMap<>();
            for (int i = 0; i < columns.size(); i++) {
                try {
                    EvaluatorResult er = row.get(i).evaluate(eventManager, result);
                    if (er.getResultType() == ResultType.SUCCESS) {
                        element.put(columns.get(i), er.getResult());
                    } else {
                        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, null, null, Msg.ERR_EVAL_ROW_ELEMENT_ON_POSITION_ON_ROW_OF_RELATION, i + 1, rowIndex + 1, name);
                        return new EvaluatorResultImpl(results, ResultType.FAILURE);
                    }
                } catch (Exception e) {
                    MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, e, null, Msg.ERR_EVAL_ROW_ELEMENT_ON_POSITION_ON_ROW_OF_RELATION, i + 1, rowIndex + 1, name);
                    return new EvaluatorResultImpl(results, ResultType.FAILURE);
                }
            }
            results.add(element);
        }
    } finally {
        result.setContext(previousContext);
    }
    return new EvaluatorResultImpl(results, ResultType.SUCCESS);
}

Example 3 with DMNContext

use of org.kie.dmn.api.core.DMNContext in project drools by kiegroup.

the class InvokeFunction method invoke.

public FEELFnResult<Object> invoke(@ParameterName("ctx") EvaluationContext ctx, @ParameterName("namespace") String namespace, @ParameterName("model name") String modelName, @ParameterName("decision name") String decisionName, @ParameterName("parameters") Map<String, Object> parameters) {
    DMNRuntime dmnRuntime = ctx.getDMNRuntime();
    if (namespace == null) {
        return FEELFnResult.ofError(new InvalidParametersEvent(FEELEvent.Severity.ERROR, "namespace", "cannot be null"));
    }
    if (modelName == null) {
        return FEELFnResult.ofError(new InvalidParametersEvent(FEELEvent.Severity.ERROR, "model name", "cannot be null"));
    }
    if (decisionName == null) {
        return FEELFnResult.ofError(new InvalidParametersEvent(FEELEvent.Severity.ERROR, "decision name", "cannot be null"));
    }
    if (parameters == null) {
        return FEELFnResult.ofError(new InvalidParametersEvent(FEELEvent.Severity.ERROR, "parameters", "cannot be null"));
    }
    FEELEvent capturedException = null;
    try {
        ctx.enterFrame();
        DMNModel dmnModel = dmnRuntime.getModel(namespace, modelName);
        if (dmnModel == null) {
            return FEELFnResult.ofError(new FEELEventBase(FEELEvent.Severity.ERROR, "Cannot find model '" + modelName + "' in namespace " + namespace, null));
        }
        if (dmnModel.getDecisionByName(decisionName) == null) {
            return FEELFnResult.ofError(new FEELEventBase(FEELEvent.Severity.ERROR, "Cannot find decision '" + decisionName + "' in the model", null));
        }
        DMNContext dmnContext = dmnRuntime.newContext();
        dmnContext.getAll().putAll(parameters);
        DMNResult requiredDecisionResult = dmnRuntime.evaluateByName(dmnModel, dmnContext, decisionName);
        if (requiredDecisionResult.hasErrors()) {
            return FEELFnResult.ofError(new FEELEventBase(FEELEvent.Severity.ERROR, "Errors occurred while invoking the external decision: " + requiredDecisionResult.getMessages(), null));
        }
        return FEELFnResult.ofResult(requiredDecisionResult.getContext().get(decisionName));
    } catch (Exception e) {
        capturedException = new FEELEventBase(FEELEvent.Severity.ERROR, "Error invoking function", new RuntimeException("Error invoking function " + getName() + ".", e));
    } finally {
        ctx.exitFrame();
    }
    return FEELFnResult.ofError(capturedException);
}

Example 4 with DMNContext

use of org.kie.dmn.api.core.DMNContext in project drools by kiegroup.

the class DMNRuntimeTest method testEx_4_3simplified.

@Test
public void testEx_4_3simplified() {
    DMNRuntime runtime = DMNRuntimeUtil.createRuntime("Ex_4_3simplified.dmn", this.getClass());
    DMNModel dmnModel = runtime.getModel("http://www.trisotech.com/definitions/_5c5a9c72-627e-4666-ae85-31356fed3658", "Ex_4_3simplified");
    assertThat(dmnModel, notNullValue());
    assertThat(DMNRuntimeUtil.formatMessages(dmnModel.getMessages()), dmnModel.hasErrors(), is(false));
    DMNContext context = DMNFactory.newContext();
    context.set("number", 123.123456d);
    DMNResult dmnResult = runtime.evaluateAll(dmnModel, context);
    System.out.println(dmnResult);
    assertThat(DMNRuntimeUtil.formatMessages(dmnResult.getMessages()), dmnResult.hasErrors(), is(false));
    DMNContext result = dmnResult.getContext();
    assertThat(result.get("Formatted Monthly Payment"), is("€123.12"));
}

Example 5 with DMNContext

use of org.kie.dmn.api.core.DMNContext in project drools by kiegroup.

the class DMNRuntimeTest method testInvalidFunction.

@Test
public void testInvalidFunction() {
    final DMNRuntime runtime = DMNRuntimeUtil.createRuntimeWithAdditionalResources("InvalidFunction.dmn", this.getClass());
    final DMNModel model = runtime.getModel("http://www.trisotech.com/definitions/_84453b71-5d23-479f-9481-5196d92bacae", "0003-iteration-augmented");
    assertThat(model, notNullValue());
    final DMNContext context = DMNFactory.newContext();
    context.set("Loans", new HashMap<>());
    final DMNResult result = runtime.evaluateAll(model, context);
    final List<DMNDecisionResult> decisionResults = result.getDecisionResults();
    FEELStringMarshaller.INSTANCE.marshall(Arrays.asList(decisionResults.get(0).getResult(), decisionResults.get(1).getResult()));
}