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Example 1 with DMNLiteralExpressionEvaluator

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

the class DMNEvaluatorCompiler method compileLiteralExpression.

private DMNExpressionEvaluator compileLiteralExpression(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String exprName, LiteralExpression expression) {
    DMNLiteralExpressionEvaluator evaluator = null;
    if (expression.getExpressionLanguage() == null || expression.getExpressionLanguage().equals(expression.getURIFEEL())) {
        String exprText = expression.getText();
        if (exprText != null) {
            try {
                CompiledExpression compiledExpression = ctx.getFeelHelper().compileFeelExpression(ctx, exprText, model, expression, Msg.ERR_COMPILING_FEEL_EXPR_FOR_NAME_ON_NODE, exprText, exprName, node.getIdentifierString());
                evaluator = new DMNLiteralExpressionEvaluator(compiledExpression, expression, ctx.getFeelHelper().newFEELInstance());
            } catch (Throwable e) {
                MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, expression, model, e, null, Msg.ERR_COMPILING_FEEL_EXPR_FOR_NAME_ON_NODE, exprText, exprName, node.getIdentifierString(), "Exception raised: " + e.getClass().getSimpleName());
            }
        } else {
            MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, expression, model, null, null, Msg.MISSING_EXPRESSION_FOR_NAME, exprName, node.getIdentifierString());
        }
    }
    return evaluator;
}
Also used : DMNLiteralExpressionEvaluator(org.kie.dmn.core.ast.DMNLiteralExpressionEvaluator) CompiledExpression(org.kie.dmn.feel.lang.CompiledExpression)

Example 2 with DMNLiteralExpressionEvaluator

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

the class DMNEvaluatorCompiler method compileFunctionDefinition.

private DMNExpressionEvaluator compileFunctionDefinition(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String functionName, FunctionDefinition expression) {
    FunctionDefinition funcDef = expression;
    String kindStr = funcDef.getAdditionalAttributes().get(FunctionDefinition.KIND_QNAME);
    FunctionDefinition.Kind kind = kindStr != null ? FunctionDefinition.Kind.determineFromString(kindStr) : FunctionDefinition.Kind.FEEL;
    if (kind == null) {
        // unknown function kind
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, funcDef, model, null, null, Msg.FUNC_DEF_INVALID_KIND, kindStr, node.getIdentifierString());
        return new DMNFunctionDefinitionEvaluator(node.getName(), funcDef);
    } else if (kind.equals(FunctionDefinition.Kind.FEEL)) {
        ctx.enterFrame();
        try {
            DMNFunctionDefinitionEvaluator func = new DMNFunctionDefinitionEvaluator(node.getName(), funcDef);
            for (InformationItem p : funcDef.getFormalParameter()) {
                DMNCompilerHelper.checkVariableName(model, p, p.getName());
                DMNType dmnType = compiler.resolveTypeRef(model, node, p, p, p.getTypeRef());
                func.addParameter(p.getName(), dmnType);
                ctx.setVariable(p.getName(), dmnType);
            }
            DMNExpressionEvaluator eval = compileExpression(ctx, model, node, functionName, funcDef.getExpression());
            if (eval instanceof DMNLiteralExpressionEvaluator && ((DMNLiteralExpressionEvaluator) eval).isFunctionDefinition()) {
                // we need to resolve the function and eliminate the indirection
                CompiledExpression fexpr = ((DMNLiteralExpressionEvaluator) eval).getExpression();
                FEELFunction feelFunction = feel.evaluateFunctionDef(ctx, fexpr, model, funcDef, Msg.FUNC_DEF_COMPILATION_ERR, functionName, node.getIdentifierString());
                DMNInvocationEvaluator invoker = new DMNInvocationEvaluator(node.getName(), node.getSource(), functionName, new Invocation(), (fctx, fname) -> feelFunction, // feel can be null as anyway is hardcoded to `feelFunction`
                null);
                for (InformationItem p : funcDef.getFormalParameter()) {
                    invoker.addParameter(p.getName(), func.getParameterType(p.getName()), (em, dr) -> new EvaluatorResultImpl(dr.getContext().get(p.getName()), EvaluatorResult.ResultType.SUCCESS));
                }
                eval = invoker;
            }
            func.setEvaluator(eval);
            return func;
        } finally {
            ctx.exitFrame();
        }
    } else if (kind.equals(FunctionDefinition.Kind.JAVA)) {
        if (funcDef.getExpression() instanceof Context) {
            // proceed
            Context context = (Context) funcDef.getExpression();
            String clazz = null;
            String method = null;
            for (ContextEntry ce : context.getContextEntry()) {
                if (ce.getVariable() != null && ce.getVariable().getName() != null && ce.getExpression() != null && ce.getExpression() instanceof LiteralExpression) {
                    if (ce.getVariable().getName().equals("class")) {
                        clazz = stripQuotes(((LiteralExpression) ce.getExpression()).getText().trim());
                    } else if (ce.getVariable().getName().equals("method signature")) {
                        method = stripQuotes(((LiteralExpression) ce.getExpression()).getText().trim());
                    }
                }
            }
            if (clazz != null && method != null) {
                String params = funcDef.getFormalParameter().stream().map(p -> p.getName()).collect(Collectors.joining(","));
                String expr = String.format("function(%s) external { java: { class: \"%s\", method signature: \"%s\" }}", params, clazz, method);
                try {
                    FEELFunction feelFunction = feel.evaluateFunctionDef(ctx, expr, model, funcDef, Msg.FUNC_DEF_COMPILATION_ERR, functionName, node.getIdentifierString());
                    if (feelFunction != null) {
                        ((BaseFEELFunction) feelFunction).setName(functionName);
                    }
                    DMNInvocationEvaluator invoker = new DMNInvocationEvaluator(node.getName(), node.getSource(), functionName, new Invocation(), (fctx, fname) -> feelFunction, // feel can be null as anyway is hardcoded to `feelFunction`
                    null);
                    DMNFunctionDefinitionEvaluator func = new DMNFunctionDefinitionEvaluator(node.getName(), funcDef);
                    for (InformationItem p : funcDef.getFormalParameter()) {
                        DMNCompilerHelper.checkVariableName(model, p, p.getName());
                        DMNType dmnType = compiler.resolveTypeRef(model, node, p, p, p.getTypeRef());
                        func.addParameter(p.getName(), dmnType);
                        invoker.addParameter(p.getName(), dmnType, (em, dr) -> new EvaluatorResultImpl(dr.getContext().get(p.getName()), EvaluatorResult.ResultType.SUCCESS));
                    }
                    func.setEvaluator(invoker);
                    return func;
                } catch (Throwable e) {
                    MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, expression, model, e, null, Msg.FUNC_DEF_COMPILATION_ERR, functionName, node.getIdentifierString(), "Exception raised: " + e.getClass().getSimpleName());
                }
            } else {
                MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, expression, model, null, null, Msg.FUNC_DEF_MISSING_ENTRY, functionName, node.getIdentifierString());
            }
        } else {
            // error, java function definitions require a context
            MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, funcDef, model, null, null, Msg.FUNC_DEF_BODY_NOT_CONTEXT, node.getIdentifierString());
        }
    } else if (kind.equals(FunctionDefinition.Kind.PMML)) {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, funcDef, model, null, null, Msg.FUNC_DEF_PMML_NOT_SUPPORTED, node.getIdentifierString());
    } else {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, funcDef, model, null, null, Msg.FUNC_DEF_INVALID_KIND, kindStr, node.getIdentifierString());
    }
    return new DMNFunctionDefinitionEvaluator(node.getName(), funcDef);
}
Also used : InformationItem(org.kie.dmn.model.v1_1.InformationItem) DMNMessage(org.kie.dmn.api.core.DMNMessage) ContextEntry(org.kie.dmn.model.v1_1.ContextEntry) OutputClause(org.kie.dmn.model.v1_1.OutputClause) FunctionDefinition(org.kie.dmn.model.v1_1.FunctionDefinition) LoggerFactory(org.slf4j.LoggerFactory) LiteralExpression(org.kie.dmn.model.v1_1.LiteralExpression) DMNExpressionEvaluator(org.kie.dmn.core.api.DMNExpressionEvaluator) DTDecisionRule(org.kie.dmn.feel.runtime.decisiontables.DTDecisionRule) EvaluatorResult(org.kie.dmn.core.api.EvaluatorResult) Binding(org.kie.dmn.model.v1_1.Binding) UnaryTest(org.kie.dmn.feel.runtime.UnaryTest) DMNModelInstrumentedBase(org.kie.dmn.model.v1_1.DMNModelInstrumentedBase) BaseDMNTypeImpl(org.kie.dmn.core.impl.BaseDMNTypeImpl) DMNModelImpl(org.kie.dmn.core.impl.DMNModelImpl) DecisionTable(org.kie.dmn.model.v1_1.DecisionTable) DMNRelationEvaluator(org.kie.dmn.core.ast.DMNRelationEvaluator) Collectors(java.util.stream.Collectors) BusinessKnowledgeModelNode(org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode) Context(org.kie.dmn.model.v1_1.Context) List(java.util.List) DMNDTExpressionEvaluator(org.kie.dmn.core.ast.DMNDTExpressionEvaluator) CompiledExpression(org.kie.dmn.feel.lang.CompiledExpression) Invocation(org.kie.dmn.model.v1_1.Invocation) Optional(java.util.Optional) QName(javax.xml.namespace.QName) DMNLiteralExpressionEvaluator(org.kie.dmn.core.ast.DMNLiteralExpressionEvaluator) BusinessKnowledgeModel(org.kie.dmn.model.v1_1.BusinessKnowledgeModel) DMNElement(org.kie.dmn.model.v1_1.DMNElement) FEEL(org.kie.dmn.feel.FEEL) MsgUtil(org.kie.dmn.core.util.MsgUtil) DMNType(org.kie.dmn.api.core.DMNType) DMNContextEvaluator(org.kie.dmn.core.ast.DMNContextEvaluator) DTOutputClause(org.kie.dmn.feel.runtime.decisiontables.DTOutputClause) EvaluatorResultImpl(org.kie.dmn.core.ast.EvaluatorResultImpl) DTInputClause(org.kie.dmn.feel.runtime.decisiontables.DTInputClause) ArrayList(java.util.ArrayList) HitPolicy(org.kie.dmn.model.v1_1.HitPolicy) Relation(org.kie.dmn.model.v1_1.Relation) DecisionNode(org.kie.dmn.api.core.ast.DecisionNode) FEELFunction(org.kie.dmn.feel.runtime.FEELFunction) DMNBaseNode(org.kie.dmn.core.ast.DMNBaseNode) DecisionRule(org.kie.dmn.model.v1_1.DecisionRule) UnaryTests(org.kie.dmn.model.v1_1.UnaryTests) Expression(org.kie.dmn.model.v1_1.Expression) DMNInvocationEvaluator(org.kie.dmn.core.ast.DMNInvocationEvaluator) Logger(org.slf4j.Logger) DMNListEvaluator(org.kie.dmn.core.ast.DMNListEvaluator) DTInvokerFunction(org.kie.dmn.feel.runtime.functions.DTInvokerFunction) Decision(org.kie.dmn.model.v1_1.Decision) Collectors.toList(java.util.stream.Collectors.toList) DMNFunctionDefinitionEvaluator(org.kie.dmn.core.ast.DMNFunctionDefinitionEvaluator) InputClause(org.kie.dmn.model.v1_1.InputClause) Msg(org.kie.dmn.core.util.Msg) DecisionTableImpl(org.kie.dmn.feel.runtime.decisiontables.DecisionTableImpl) Collections(java.util.Collections) BaseFEELFunction(org.kie.dmn.feel.runtime.functions.BaseFEELFunction) Context(org.kie.dmn.model.v1_1.Context) BaseFEELFunction(org.kie.dmn.feel.runtime.functions.BaseFEELFunction) DMNExpressionEvaluator(org.kie.dmn.core.api.DMNExpressionEvaluator) FEELFunction(org.kie.dmn.feel.runtime.FEELFunction) BaseFEELFunction(org.kie.dmn.feel.runtime.functions.BaseFEELFunction) Invocation(org.kie.dmn.model.v1_1.Invocation) DMNLiteralExpressionEvaluator(org.kie.dmn.core.ast.DMNLiteralExpressionEvaluator) LiteralExpression(org.kie.dmn.model.v1_1.LiteralExpression) InformationItem(org.kie.dmn.model.v1_1.InformationItem) CompiledExpression(org.kie.dmn.feel.lang.CompiledExpression) ContextEntry(org.kie.dmn.model.v1_1.ContextEntry) DMNFunctionDefinitionEvaluator(org.kie.dmn.core.ast.DMNFunctionDefinitionEvaluator) FunctionDefinition(org.kie.dmn.model.v1_1.FunctionDefinition) EvaluatorResultImpl(org.kie.dmn.core.ast.EvaluatorResultImpl) DMNInvocationEvaluator(org.kie.dmn.core.ast.DMNInvocationEvaluator) DMNType(org.kie.dmn.api.core.DMNType)

Aggregations

DMNLiteralExpressionEvaluator (org.kie.dmn.core.ast.DMNLiteralExpressionEvaluator)2 CompiledExpression (org.kie.dmn.feel.lang.CompiledExpression)2 ArrayList (java.util.ArrayList)1 Collections (java.util.Collections)1 List (java.util.List)1 Optional (java.util.Optional)1 Collectors (java.util.stream.Collectors)1 Collectors.toList (java.util.stream.Collectors.toList)1 QName (javax.xml.namespace.QName)1 DMNMessage (org.kie.dmn.api.core.DMNMessage)1 DMNType (org.kie.dmn.api.core.DMNType)1 BusinessKnowledgeModelNode (org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode)1 DecisionNode (org.kie.dmn.api.core.ast.DecisionNode)1 DMNExpressionEvaluator (org.kie.dmn.core.api.DMNExpressionEvaluator)1 EvaluatorResult (org.kie.dmn.core.api.EvaluatorResult)1 DMNBaseNode (org.kie.dmn.core.ast.DMNBaseNode)1 DMNContextEvaluator (org.kie.dmn.core.ast.DMNContextEvaluator)1 DMNDTExpressionEvaluator (org.kie.dmn.core.ast.DMNDTExpressionEvaluator)1 DMNFunctionDefinitionEvaluator (org.kie.dmn.core.ast.DMNFunctionDefinitionEvaluator)1 DMNInvocationEvaluator (org.kie.dmn.core.ast.DMNInvocationEvaluator)1