use of org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode in project drools by kiegroup.
the class BusinessKnowledgeModelCompiler method compileEvaluator.
@Override
public void compileEvaluator(DMNNode node, DMNCompilerImpl compiler, DMNCompilerContext ctx, DMNModelImpl model) {
BusinessKnowledgeModelNodeImpl bkmi = (BusinessKnowledgeModelNodeImpl) node;
compiler.linkRequirements(model, bkmi);
ctx.enterFrame();
try {
for (DMNNode dep : bkmi.getDependencies().values()) {
if (dep instanceof BusinessKnowledgeModelNode) {
// might need to create a DMNType for "functions" and replace the type here by that
ctx.setVariable(dep.getName(), ((BusinessKnowledgeModelNode) dep).getResultType());
}
}
// to allow recursive call from inside a BKM node, a variable for self must be available for the compiler context:
ctx.setVariable(bkmi.getName(), bkmi.getResultType());
FunctionDefinition funcDef = bkmi.getBusinessKnowledModel().getEncapsulatedLogic();
DMNExpressionEvaluator exprEvaluator = compiler.getEvaluatorCompiler().compileExpression(ctx, model, bkmi, bkmi.getName(), funcDef);
bkmi.setEvaluator(exprEvaluator);
} finally {
ctx.exitFrame();
}
}
use of org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode in project drools by kiegroup.
the class DMNCompilerImpl method processDrgElements.
private void processDrgElements(DMNCompilerContext ctx, DMNFEELHelper feel, DMNModelImpl model, Definitions dmndefs) {
for (DRGElement e : dmndefs.getDrgElement()) {
boolean foundIt = false;
for (DRGElementCompiler dc : drgCompilers) {
if (dc.accept(e)) {
foundIt = true;
dc.compileNode(e, this, model);
continue;
}
}
if (!foundIt) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, e, model, null, null, Msg.UNSUPPORTED_ELEMENT, e.getClass().getSimpleName(), e.getId());
}
}
for (BusinessKnowledgeModelNode bkm : model.getBusinessKnowledgeModels()) {
BusinessKnowledgeModelNodeImpl bkmi = (BusinessKnowledgeModelNodeImpl) bkm;
for (DRGElementCompiler dc : drgCompilers) {
if (bkmi.getEvaluator() == null && dc.accept(bkm)) {
dc.compileEvaluator(bkm, this, ctx, model);
}
}
}
for (DecisionNode d : model.getDecisions()) {
DecisionNodeImpl di = (DecisionNodeImpl) d;
for (DRGElementCompiler dc : drgCompilers) {
if (di.getEvaluator() == null && dc.accept(d)) {
dc.compileEvaluator(d, this, ctx, model);
}
}
}
detectCycles(model);
}
use of org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode in project drools by kiegroup.
the class DMNEvaluatorCompiler method compileDecisionTable.
private DMNExpressionEvaluator compileDecisionTable(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String dtName, DecisionTable dt) {
java.util.List<DTInputClause> inputs = new ArrayList<>();
int index = 0;
for (InputClause ic : dt.getInput()) {
index++;
String inputExpressionText = ic.getInputExpression().getText();
String inputValuesText = Optional.ofNullable(ic.getInputValues()).map(UnaryTests::getText).orElse(null);
java.util.List<UnaryTest> inputValues = null;
if (inputValuesText != null) {
inputValues = textToUnaryTestList(ctx, inputValuesText, model, ic, Msg.ERR_COMPILING_FEEL_EXPR_ON_DT_INPUT_CLAUSE_IDX, inputValuesText, node.getIdentifierString(), index);
} else if (ic.getInputExpression().getTypeRef() != null) {
QName inputExpressionTypeRef = ic.getInputExpression().getTypeRef();
BaseDMNTypeImpl typeRef = (BaseDMNTypeImpl) model.getTypeRegistry().resolveType(resolveNamespaceForTypeRef(inputExpressionTypeRef, ic.getInputExpression()), inputExpressionTypeRef.getLocalPart());
inputValues = typeRef.getAllowedValuesFEEL();
}
CompiledExpression compiledInput = feel.compileFeelExpression(ctx, inputExpressionText, model, dt, Msg.ERR_COMPILING_FEEL_EXPR_ON_DT_INPUT_CLAUSE_IDX, inputExpressionText, dtName, index);
inputs.add(new DTInputClause(inputExpressionText, inputValuesText, inputValues, compiledInput));
}
java.util.List<DTOutputClause> outputs = new ArrayList<>();
index = 0;
boolean hasOutputValues = false;
for (OutputClause oc : dt.getOutput()) {
String outputName = oc.getName();
if (outputName != null) {
DMNCompilerHelper.checkVariableName(model, node.getSource(), outputName);
}
String id = oc.getId();
String outputValuesText = Optional.ofNullable(oc.getOutputValues()).map(UnaryTests::getText).orElse(null);
String defaultValue = oc.getDefaultOutputEntry() != null ? oc.getDefaultOutputEntry().getText() : null;
BaseDMNTypeImpl typeRef = (BaseDMNTypeImpl) DMNTypeRegistry.UNKNOWN;
java.util.List<UnaryTest> outputValues = null;
if (oc.getTypeRef() != null) {
QName outputExpressionTypeRef = oc.getTypeRef();
typeRef = (BaseDMNTypeImpl) model.getTypeRegistry().resolveType(resolveNamespaceForTypeRef(outputExpressionTypeRef, oc), outputExpressionTypeRef.getLocalPart());
if (typeRef == null) {
typeRef = (BaseDMNTypeImpl) DMNTypeRegistry.UNKNOWN;
}
} else if (dt.getOutput().size() == 1 && (dt.getParent() instanceof Decision || dt.getParent() instanceof BusinessKnowledgeModel || dt.getParent() instanceof ContextEntry)) {
QName inferredTypeRef = recurseUpToInferTypeRef(model, oc, dt);
// if inferredTypeRef is null, a std err will have been reported
if (inferredTypeRef != null) {
typeRef = (BaseDMNTypeImpl) model.getTypeRegistry().resolveType(resolveNamespaceForTypeRef(inferredTypeRef, oc), inferredTypeRef.getLocalPart());
}
}
if (outputValuesText != null) {
outputValues = textToUnaryTestList(ctx, outputValuesText, model, oc, Msg.ERR_COMPILING_FEEL_EXPR_ON_DT_OUTPUT_CLAUSE_IDX, outputValuesText, node.getIdentifierString(), ++index);
} else if (typeRef != DMNTypeRegistry.UNKNOWN) {
outputValues = typeRef.getAllowedValuesFEEL();
}
if (outputValues != null && !outputValues.isEmpty()) {
hasOutputValues = true;
}
outputs.add(new DTOutputClause(outputName, id, outputValues, defaultValue, typeRef.getFeelType(), typeRef.isCollection()));
}
if (dt.getHitPolicy().equals(HitPolicy.PRIORITY) && !hasOutputValues) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, dt.getParent(), model, null, null, Msg.MISSING_OUTPUT_VALUES, dt.getParent());
}
java.util.List<DTDecisionRule> rules = new ArrayList<>();
index = 0;
for (DecisionRule dr : dt.getRule()) {
DTDecisionRule rule = new DTDecisionRule(index);
for (UnaryTests ut : dr.getInputEntry()) {
final java.util.List<UnaryTest> tests;
if (ut == null || ut.getText() == null || ut.getText().isEmpty()) {
tests = Collections.emptyList();
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, ut, model, null, null, Msg.DTABLE_EMPTY_ENTRY, dt.getRule().indexOf(dr) + 1, dr.getInputEntry().indexOf(ut) + 1, dt.getParentDRDElement().getIdentifierString());
} else {
tests = textToUnaryTestList(ctx, ut.getText(), model, dr, Msg.ERR_COMPILING_FEEL_EXPR_ON_DT_RULE_IDX, ut.getText(), node.getIdentifierString(), index + 1);
}
rule.getInputEntry().add((c, x) -> tests.stream().anyMatch(t -> {
Boolean result = t.apply(c, x);
return result != null && result == true;
}));
}
for (LiteralExpression le : dr.getOutputEntry()) {
String expressionText = le.getText();
CompiledExpression compiledExpression = feel.compileFeelExpression(ctx, expressionText, model, dr, Msg.ERR_COMPILING_FEEL_EXPR_ON_DT_RULE_IDX, expressionText, dtName, index + 1);
rule.getOutputEntry().add(compiledExpression);
}
rules.add(rule);
index++;
}
String policy = dt.getHitPolicy().value() + (dt.getAggregation() != null ? " " + dt.getAggregation().value() : "");
org.kie.dmn.feel.runtime.decisiontables.HitPolicy hp = org.kie.dmn.feel.runtime.decisiontables.HitPolicy.fromString(policy);
java.util.List<String> parameterNames = new ArrayList<>();
if (node instanceof BusinessKnowledgeModelNode) {
// need to break this statement down and check for nulls
parameterNames.addAll(((BusinessKnowledgeModelNode) node).getBusinessKnowledModel().getEncapsulatedLogic().getFormalParameter().stream().map(f -> f.getName()).collect(toList()));
} else {
parameterNames.addAll(node.getDependencies().keySet());
}
// creates a FEEL instance which will be used by the invoker/impl (s)
FEEL feelInstance = feel.newFEELInstance();
DecisionTableImpl dti = new DecisionTableImpl(dtName, parameterNames, inputs, outputs, rules, hp, feelInstance);
DTInvokerFunction dtf = new DTInvokerFunction(dti);
DMNDTExpressionEvaluator dtee = new DMNDTExpressionEvaluator(node, feelInstance, dtf);
return dtee;
}
use of org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode in project drools by kiegroup.
the class DecisionCompiler method compileEvaluator.
@Override
public void compileEvaluator(DMNNode node, DMNCompilerImpl compiler, DMNCompilerContext ctx, DMNModelImpl model) {
DecisionNodeImpl di = (DecisionNodeImpl) node;
compiler.linkRequirements(model, di);
ctx.enterFrame();
try {
Map<String, DMNType> importedTypes = new HashMap<>();
for (DMNNode dep : di.getDependencies().values()) {
if (dep instanceof DecisionNode) {
ctx.setVariable(dep.getName(), ((DecisionNode) dep).getResultType());
} else if (dep instanceof InputDataNode) {
ctx.setVariable(dep.getName(), ((InputDataNode) dep).getType());
} else if (dep instanceof BusinessKnowledgeModelNode) {
if (dep.getModelNamespace().equals(model.getNamespace())) {
// might need to create a DMNType for "functions" and replace the type here by that
ctx.setVariable(dep.getName(), ((BusinessKnowledgeModelNode) dep).getResultType());
} else {
// then the BKM dependency is an imported BKM.
Optional<String> alias = model.getImportAliasFor(dep.getModelNamespace(), dep.getModelName());
if (alias.isPresent()) {
CompositeTypeImpl importedComposite = (CompositeTypeImpl) importedTypes.computeIfAbsent(alias.get(), a -> new CompositeTypeImpl());
importedComposite.addField(dep.getName(), ((BusinessKnowledgeModelNode) dep).getResultType());
}
}
}
}
for (Entry<String, DMNType> importedType : importedTypes.entrySet()) {
ctx.setVariable(importedType.getKey(), importedType.getValue());
}
DMNExpressionEvaluator evaluator = compiler.getEvaluatorCompiler().compileExpression(ctx, model, di, di.getName(), di.getDecision().getExpression());
di.setEvaluator(evaluator);
} finally {
ctx.exitFrame();
}
}
use of org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode in project drools by kiegroup.
the class DMNRuntimeImpl method evaluateBKM.
private void evaluateBKM(DMNContext context, DMNResultImpl result, BusinessKnowledgeModelNode b, boolean typeCheck) {
BusinessKnowledgeModelNodeImpl bkm = (BusinessKnowledgeModelNodeImpl) b;
if (isNodeValueDefined(result, bkm)) {
// TODO: do we need to check if the defined variable is a function as it should?
return;
}
// TODO: do we need to check/resolve dependencies?
if (bkm.getEvaluator() == null) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, bkm.getSource(), result, null, null, Msg.MISSING_EXPRESSION_FOR_BKM, getIdentifier(bkm));
return;
}
try {
DMNRuntimeEventManagerUtils.fireBeforeEvaluateBKM(eventManager, bkm, result);
for (DMNNode dep : bkm.getDependencies().values()) {
if (typeCheck && !checkDependencyValueIsValid(dep, result)) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, ((DMNBaseNode) dep).getSource(), result, null, null, Msg.ERROR_EVAL_NODE_DEP_WRONG_TYPE, getIdentifier(bkm), getIdentifier(dep), MsgUtil.clipString(result.getContext().get(dep.getName()).toString(), 50), ((DMNBaseNode) dep).getType());
return;
}
if (!isNodeValueDefined(result, dep)) {
if (dep instanceof BusinessKnowledgeModelNode) {
evaluateBKM(context, result, (BusinessKnowledgeModelNode) dep, typeCheck);
} else {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, bkm.getSource(), result, null, null, Msg.REQ_DEP_NOT_FOUND_FOR_NODE, getIdentifier(dep), getIdentifier(bkm));
return;
}
}
}
EvaluatorResult er = bkm.getEvaluator().evaluate(this, result);
if (er.getResultType() == EvaluatorResult.ResultType.SUCCESS) {
FEELFunction resultFn = (FEELFunction) er.getResult();
if (bkm.getModelNamespace().equals(result.getModel().getNamespace())) {
// TODO check of the return type will need calculation/inference of function return type.
result.getContext().set(bkm.getBusinessKnowledModel().getVariable().getName(), resultFn);
} else {
DMNModelImpl model = (DMNModelImpl) result.getModel();
Optional<String> importAlias = model.getImportAliasFor(bkm.getModelNamespace(), bkm.getModelName());
Map<String, Object> aliasContext = (Map) result.getContext().getAll().computeIfAbsent(importAlias.get(), x -> new LinkedHashMap<>());
aliasContext.put(bkm.getBusinessKnowledModel().getVariable().getName(), resultFn);
}
}
} catch (Throwable t) {
MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, bkm.getSource(), result, t, null, Msg.ERROR_EVAL_BKM_NODE, getIdentifier(bkm), t.getMessage());
} finally {
DMNRuntimeEventManagerUtils.fireAfterEvaluateBKM(eventManager, bkm, result);
}
}
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