use of org.kie.dmn.core.ast.DecisionNodeImpl in project drools by kiegroup.
the class DMNRuntimeImpl method evaluateDecision.
private boolean evaluateDecision(DMNContext context, DMNResultImpl result, DecisionNode d, boolean typeCheck) {
DecisionNodeImpl decision = (DecisionNodeImpl) d;
if (result.getContext().isDefined(decision.getName())) {
// already resolved
return true;
} else {
// check if the decision was already evaluated before and returned error
DMNDecisionResult.DecisionEvaluationStatus status = result.getDecisionResultById(decision.getId()).getEvaluationStatus();
if (FAILED == status || SKIPPED == status || EVALUATING == status) {
return false;
}
}
try {
DMNRuntimeEventManagerUtils.fireBeforeEvaluateDecision(eventManager, decision, result);
boolean missingInput = false;
DMNDecisionResultImpl dr = (DMNDecisionResultImpl) result.getDecisionResultById(decision.getId());
dr.setEvaluationStatus(DMNDecisionResult.DecisionEvaluationStatus.EVALUATING);
for (DMNNode dep : decision.getDependencies().values()) {
try {
if (typeCheck && !checkDependencyValueIsValid(dep, result)) {
missingInput = true;
DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, ((DMNBaseNode) dep).getSource(), result, null, null, Msg.ERROR_EVAL_NODE_DEP_WRONG_TYPE, getIdentifier(decision), getIdentifier(dep), MsgUtil.clipString(result.getContext().get(dep.getName()).toString(), 50), ((DMNBaseNode) dep).getType());
reportFailure(dr, message, DMNDecisionResult.DecisionEvaluationStatus.SKIPPED);
}
} catch (Exception e) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, ((DMNBaseNode) dep).getSource(), result, e, null, Msg.ERROR_CHECKING_ALLOWED_VALUES, getIdentifier(dep), e.getMessage());
}
if (!result.getContext().isDefined(dep.getName())) {
if (dep instanceof DecisionNode) {
if (!evaluateDecision(context, result, (DecisionNode) dep, typeCheck)) {
missingInput = true;
DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, decision.getSource(), result, null, null, Msg.UNABLE_TO_EVALUATE_DECISION_REQ_DEP, getIdentifier(decision), getIdentifier(dep));
reportFailure(dr, message, DMNDecisionResult.DecisionEvaluationStatus.SKIPPED);
}
} else if (dep instanceof BusinessKnowledgeModelNode) {
evaluateBKM(context, result, (BusinessKnowledgeModelNode) dep, typeCheck);
} else {
missingInput = true;
DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, decision.getSource(), result, null, null, Msg.REQ_DEP_NOT_FOUND_FOR_NODE, getIdentifier(dep), getIdentifier(decision));
reportFailure(dr, message, DMNDecisionResult.DecisionEvaluationStatus.SKIPPED);
}
}
}
if (missingInput) {
return false;
}
if (decision.getEvaluator() == null) {
DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, decision.getSource(), result, null, null, Msg.MISSING_EXPRESSION_FOR_DECISION, getIdentifier(decision));
reportFailure(dr, message, DMNDecisionResult.DecisionEvaluationStatus.SKIPPED);
return false;
}
try {
EvaluatorResult er = decision.getEvaluator().evaluate(this, result);
if (er.getResultType() == EvaluatorResult.ResultType.SUCCESS) {
Object value = er.getResult();
if (!decision.getResultType().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];
}
try {
if (typeCheck && !d.getResultType().isAssignableValue(value)) {
DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, decision.getSource(), result, null, null, Msg.ERROR_EVAL_NODE_RESULT_WRONG_TYPE, getIdentifier(decision), decision.getResultType(), value);
reportFailure(dr, message, DMNDecisionResult.DecisionEvaluationStatus.FAILED);
return false;
}
} catch (Exception e) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, decision.getSource(), result, e, null, Msg.ERROR_CHECKING_ALLOWED_VALUES, getIdentifier(decision), e.getMessage());
return false;
}
result.getContext().set(decision.getDecision().getVariable().getName(), value);
dr.setResult(value);
dr.setEvaluationStatus(DMNDecisionResult.DecisionEvaluationStatus.SUCCEEDED);
} else {
dr.setEvaluationStatus(DMNDecisionResult.DecisionEvaluationStatus.FAILED);
return false;
}
} catch (Throwable t) {
DMNMessage message = MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, decision.getSource(), result, t, null, Msg.ERROR_EVAL_DECISION_NODE, getIdentifier(decision), t.getMessage());
reportFailure(dr, message, DMNDecisionResult.DecisionEvaluationStatus.FAILED);
}
return true;
} finally {
DMNRuntimeEventManagerUtils.fireAfterEvaluateDecision(eventManager, decision, result);
}
}
use of org.kie.dmn.core.ast.DecisionNodeImpl in project drools by kiegroup.
the class DMNRuntimeTest method testCycleDetectionSelfReference.
@Test
public void testCycleDetectionSelfReference() {
DecisionNodeImpl decision = new DecisionNodeImpl();
decision.addDependency("self", decision);
DMNModelImpl model = new DMNModelImpl();
model.addDecision(decision);
DMNRuntime runtime = DMNRuntimeUtil.createRuntime(this.getClass());
DMNResult result = runtime.evaluateAll(model, DMNFactory.newContext());
assertTrue(result.hasErrors());
}
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