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

Example 76 with DMNContext

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

the class DMNRuntimeTest method testCompositeItemDefinition.

@Test
public void testCompositeItemDefinition() {
    DMNRuntime runtime = DMNRuntimeUtil.createRuntime("0008-LX-arithmetic.dmn", this.getClass());
    DMNModel dmnModel = runtime.getModel("https://github.com/kiegroup/kie-dmn", "0008-LX-arithmetic");
    assertThat(dmnModel, notNullValue());
    DMNContext context = DMNFactory.newContext();
    Map loan = new HashMap();
    loan.put("principal", 600000);
    loan.put("rate", 0.0375);
    loan.put("termMonths", 360);
    context.set("loan", loan);
    DMNResult dmnResult = runtime.evaluateAll(dmnModel, context);
    DMNContext result = dmnResult.getContext();
    assertThat(result.get("payment"), is(new BigDecimal("2778.693549432766768088520383236299")));
}

Example 77 with DMNContext

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

the class DMNRuntimeTest method testDateAllowedValues.

@Test
public void testDateAllowedValues() {
    DMNRuntime runtime = DMNRuntimeUtil.createRuntime("date_allowed_values.dmn", this.getClass());
    DMNModel dmnModel = runtime.getModel("http://www.trisotech.com/definitions/_fbf002a3-615b-4f02-98e4-c28d4676225a", "Error with constraints verification");
    assertThat(dmnModel, notNullValue());
    assertThat(DMNRuntimeUtil.formatMessages(dmnModel.getMessages()), dmnModel.hasErrors(), is(false));
    DMNContext ctx = runtime.newContext();
    Object duration = BuiltInType.DURATION.fromString("P20Y");
    ctx.set("yearsMonth", duration);
    Object dateTime = BuiltInType.DATE_TIME.fromString("2017-05-16T17:58:00.000");
    ctx.set("dateTime", dateTime);
    DMNResult dmnResult = runtime.evaluateAll(dmnModel, ctx);
    DMNContext result = dmnResult.getContext();
    assertThat(DMNRuntimeUtil.formatMessages(dmnResult.getMessages()), dmnResult.hasErrors(), is(false));
    assertThat((Map<String, Object>) result.get("Decision Logic 1"), hasEntry("years and months", duration));
    assertThat((Map<String, Object>) result.get("Decision Logic 1"), hasEntry("Date Time", dateTime));
}

Example 78 with DMNContext

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

the class DMNRuntimeTest method testVerifyExtendedKieFEELFunction_today.

@Test
public void testVerifyExtendedKieFEELFunction_today() {
    // DROOLS-2322
    DMNRuntime runtime = DMNRuntimeUtil.createRuntime("just_today.dmn", this.getClass());
    DMNModel dmnModel = runtime.getModel("http://www.trisotech.com/definitions/_56fd6445-ff6a-4c28-8206-71fce7f80436", "just today");
    assertThat(dmnModel, notNullValue());
    assertThat(DMNRuntimeUtil.formatMessages(dmnModel.getMessages()), dmnModel.hasErrors(), is(false));
    DMNContext emptyContext = DMNFactory.newContext();
    DMNResult dmnResult = runtime.evaluateAll(dmnModel, emptyContext);
    assertThat(DMNRuntimeUtil.formatMessages(dmnResult.getMessages()), dmnResult.hasErrors(), is(false));
    assertThat(dmnResult.getDecisionResultByName("a decision just today").getResult(), notNullValue());
}

Example 79 with DMNContext

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

the class DMNContextEvaluator method evaluate.

@Override
public EvaluatorResult evaluate(DMNRuntimeEventManager eventManager, DMNResult dmnr) {
    DMNResultImpl result = (DMNResultImpl) dmnr;
    // when this evaluator is executed, it should either return a Map of key/value pairs
    // where keys are the name of the entries and values are the result of the evaluations
    // OR if a default result is implemented, it should return the result instead
    Map<String, Object> results = new HashMap<>();
    DMNContext previousContext = result.getContext();
    DMNContextImpl dmnContext = (DMNContextImpl) previousContext.clone();
    result.setContext(dmnContext);
    try {
        for (ContextEntryDef ed : entries) {
            try {
                EvaluatorResult er = ed.getEvaluator().evaluate(eventManager, result);
                if (er.getResultType() == ResultType.SUCCESS) {
                    Object value = er.getResult();
                    if (!ed.getType().isCollection() && value instanceof Collection && ((Collection) value).size() == 1) {
                        // spec defines that "a=[a]", i.e., singleton collections should be treated as the single element
                        // and vice-versa
                        value = ((Collection) value).toArray()[0];
                    }
                    if (((DMNRuntimeImpl) eventManager.getRuntime()).performRuntimeTypeCheck(result.getModel())) {
                        if (!(ed.getContextEntry().getExpression() instanceof FunctionDefinition)) {
                            // checking directly the result type...
                            if (ed.getType() != null && !ed.getType().isAssignableValue(value)) {
                                MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, contextDef, result, null, null, Msg.ERROR_EVAL_NODE_RESULT_WRONG_TYPE, ed.getName(), ed.getType(), value);
                                return new EvaluatorResultImpl(results, ResultType.FAILURE);
                            }
                        } else {
                        // TODO ...will need calculation/inference of function return type.
                        }
                    }
                    results.put(ed.getName(), value);
                    dmnContext.set(ed.getName(), value);
                } else {
                    MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, contextDef, result, null, null, Msg.ERR_EVAL_CTX_ENTRY_ON_CTX, ed.getName(), name);
                    return new EvaluatorResultImpl(results, ResultType.FAILURE);
                }
            } catch (Exception e) {
                logger.error("Error invoking expression for node '" + name + "'.", e);
                return new EvaluatorResultImpl(results, ResultType.FAILURE);
            }
        }
    } finally {
        result.setContext(previousContext);
    }
    if (results.containsKey(RESULT_ENTRY)) {
        return new EvaluatorResultImpl(results.get(RESULT_ENTRY), ResultType.SUCCESS);
    } else {
        return new EvaluatorResultImpl(results, ResultType.SUCCESS);
    }
}

Example 80 with DMNContext

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

the class DMNInvocationEvaluator method evaluate.

@Override
public EvaluatorResult evaluate(DMNRuntimeEventManager eventManager, DMNResult dmnr) {
    final List<FEELEvent> events = new ArrayList<>();
    DMNResultImpl result = (DMNResultImpl) dmnr;
    DMNContext previousContext = result.getContext();
    DMNContextImpl dmnContext = (DMNContextImpl) previousContext.clone();
    result.setContext(dmnContext);
    Object invocationResult = null;
    try {
        FEELFunction function = this.functionLocator.apply(previousContext, functionName);
        if (function == null) {
            // check if it is a configured/built-in function
            Object r = null;
            if (feel != null) {
                r = ((FEELImpl) feel).newEvaluationContext(Collections.emptyList(), Collections.emptyMap()).getValue(functionName);
            } else {
                r = RootExecutionFrame.INSTANCE.getValue(functionName);
            }
            if (r != null && r instanceof FEELFunction) {
                function = (FEELFunction) r;
            }
        }
        if (function == null) {
            MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, null, null, Msg.FUNCTION_NOT_FOUND, functionName, nodeName);
            return new EvaluatorResultImpl(null, ResultType.FAILURE);
        }
        Object[] namedParams = new Object[parameters.size()];
        int index = 0;
        for (ActualParameter param : parameters) {
            try {
                EvaluatorResult value = param.expression.evaluate(eventManager, result);
                if (value.getResultType() == ResultType.SUCCESS) {
                    namedParams[index++] = new NamedParameter(param.name, value.getResult());
                } else {
                    MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, null, null, Msg.ERR_EVAL_PARAM_FOR_INVOCATION_ON_NODE, param.name, functionName, nodeName);
                    return new EvaluatorResultImpl(null, ResultType.FAILURE);
                }
            } catch (Exception e) {
                MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, e, null, Msg.ERR_INVOKING_PARAM_EXPR_FOR_PARAM_ON_NODE, param.name, nodeName);
                return new EvaluatorResultImpl(null, ResultType.FAILURE);
            }
        }
        FEELEventListenersManager listenerMgr = new FEELEventListenersManager();
        listenerMgr.addListener(events::add);
        EvaluationContextImpl ctx = new EvaluationContextImpl(listenerMgr, eventManager.getRuntime());
        invocationResult = function.invokeReflectively(ctx, namedParams);
        boolean hasErrors = hasErrors(events, eventManager, result);
        return new EvaluatorResultImpl(invocationResult, hasErrors ? ResultType.FAILURE : ResultType.SUCCESS);
    } catch (Throwable t) {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, node, result, t, null, Msg.ERR_INVOKING_FUNCTION_ON_NODE, functionName, nodeName);
        return new EvaluatorResultImpl(null, ResultType.FAILURE);
    } finally {
        result.setContext(previousContext);
    }
}