Examples with DMNDecisionServiceEvaluator org.kie.dmn.core.ast.DMNDecisionServiceEvaluator used on opensource projects

Example 1 with DMNDecisionServiceEvaluator

use of org.kie.dmn.core.ast.DMNDecisionServiceEvaluator in project drools by kiegroup.

the class DMNRuntimeImpl method evaluateDecisionService.

@Override
public DMNResult evaluateDecisionService(DMNModel model, DMNContext context, String decisionServiceName) {
    Objects.requireNonNull(model, () -> MsgUtil.createMessage(Msg.PARAM_CANNOT_BE_NULL, "model"));
    Objects.requireNonNull(context, () -> MsgUtil.createMessage(Msg.PARAM_CANNOT_BE_NULL, "context"));
    Objects.requireNonNull(decisionServiceName, () -> MsgUtil.createMessage(Msg.PARAM_CANNOT_BE_NULL, "decisionServiceName"));
    boolean typeCheck = performRuntimeTypeCheck(model);
    DMNResultImpl result = createResultImpl(model, context);
    // the engine should evaluate all belonging to the "local" model namespace, not imported nodes explicitly.
    Optional<DecisionServiceNode> lookupDS = ((DMNModelImpl) model).getDecisionServices().stream().filter(d -> d.getModelNamespace().equals(model.getNamespace())).filter(ds -> ds.getName().equals(decisionServiceName)).findFirst();
    if (lookupDS.isPresent()) {
        DecisionServiceNodeImpl decisionService = (DecisionServiceNodeImpl) lookupDS.get();
        for (DMNNode dep : decisionService.getInputParameters().values()) {
            if (!isNodeValueDefined(result, decisionService, dep)) {
                DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, decisionService.getSource(), result, null, null, Msg.REQ_INPUT_NOT_FOUND_FOR_DS, getDependencyIdentifier(decisionService, dep), getIdentifier(decisionService));
                final boolean walkingIntoScope = walkIntoImportScope(result, decisionService, dep);
                result.getContext().set(dep.getName(), null);
                if (walkingIntoScope) {
                    result.getContext().popScope();
                }
            } else {
                final boolean walkingIntoScope = walkIntoImportScope(result, decisionService, dep);
                final Object originalValue = result.getContext().get(dep.getName());
                DMNType depType = ((DMNModelImpl) model).getTypeRegistry().unknown();
                if (dep instanceof InputDataNode) {
                    depType = ((InputDataNode) dep).getType();
                } else if (dep instanceof DecisionNode) {
                    depType = ((DecisionNode) dep).getResultType();
                }
                Object c = coerceUsingType(originalValue, depType, typeCheck, (r, t) -> MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, decisionService.getDecisionService(), result, null, null, Msg.PARAMETER_TYPE_MISMATCH_DS, dep.getName(), t, MsgUtil.clipString(r.toString(), 50)));
                if (c != originalValue) {
                    // intentional by-reference
                    result.getContext().set(dep.getName(), c);
                }
                if (walkingIntoScope) {
                    result.getContext().popScope();
                }
            }
        }
        // please note singleton output coercion does not influence anyway when invoked DS on a model.
        EvaluatorResult evaluate = new DMNDecisionServiceEvaluator(decisionService, true, false).evaluate(this, result);
    } else {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, null, result, null, null, Msg.DECISION_SERVICE_NOT_FOUND_FOR_NAME, decisionServiceName);
    }
    return result;
}