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Example 1 with DMNInvocationEvaluator

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

the class DMNEvaluatorCompiler method compileFunctionDefinitionJAVA.

private DMNExpressionEvaluator compileFunctionDefinitionJAVA(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String functionName, FunctionDefinition funcDef) {
    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 = ctx.getFeelHelper().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, null, (fctx, fname) -> feelFunction, // feel can be null as anyway is hardcoded to `feelFunction`
                null);
                DMNFunctionDefinitionEvaluator func = new DMNFunctionDefinitionEvaluator(node, funcDef);
                for (InformationItem p : funcDef.getFormalParameter()) {
                    DMNCompilerHelper.checkVariableName(model, p, p.getName());
                    DMNType dmnType = compiler.resolveTypeRef(model, 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, funcDef, model, e, null, Msg.FUNC_DEF_COMPILATION_ERR, functionName, node.getIdentifierString(), "Exception raised: " + e.getClass().getSimpleName());
            }
        } else {
            MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, funcDef, 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());
    }
    return new DMNFunctionDefinitionEvaluator(node, funcDef);
}
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Example 2 with DMNInvocationEvaluator

use of org.kie.dmn.core.ast.DMNInvocationEvaluator 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)

Example 3 with DMNInvocationEvaluator

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

the class DMNEvaluatorCompiler method compileInvocation.

private DMNExpressionEvaluator compileInvocation(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, Invocation expression) {
    Invocation invocation = expression;
    // expression must be a literal text with the name of the function
    if (invocation.getExpression() == null || ((LiteralExpression) invocation.getExpression()).getText().isEmpty()) {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, invocation, model, null, null, Msg.MISSING_EXPRESSION_FOR_INVOCATION, node.getIdentifierString());
        return null;
    }
    String functionName = ((LiteralExpression) invocation.getExpression()).getText();
    String[] fnameParts = functionName.split("\\.");
    Optional<DMNNode> findAsDep = Optional.empty();
    if (fnameParts.length > 1) {
        findAsDep = node.getDependencies().values().stream().filter(dmnNode -> dmnNode.getModelImportAliasFor(dmnNode.getModelNamespace(), dmnNode.getModelName()).map(alias -> Objects.equals(functionName, alias + "." + dmnNode.getName())).orElse(false)).findFirst();
    } else {
        findAsDep = node.getDependencies().values().stream().filter(d -> d.getName().equals(functionName)).findAny();
    }
    boolean findAsBuiltin = RootExecutionFrame.INSTANCE.getValue(functionName) != null;
    boolean findAsCustomFunction = ctx.getFeelHelper().newCompilerContext().getFEELFunctions().stream().anyMatch(f -> f.getName().equals(functionName));
    boolean findInContext = ctx.getVariables().get(functionName) != null;
    if (!findAsDep.isPresent() && !findAsBuiltin && !findAsCustomFunction && !findInContext) {
        MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, invocation, model, null, null, Msg.EXPRESSION_FOR_INVOCATION_NOT_RESOLVED, functionName, node.getIdentifierString(), node.getDependencies().values().stream().map(DMNNode::getName).collect(Collectors.toList()));
    }
    DMNInvocationEvaluator invEval = new DMNInvocationEvaluator(node.getName(), node.getSource(), functionName, invocation, null, ctx.getFeelHelper().newFEELInstance());
    for (Binding binding : invocation.getBinding()) {
        if (binding.getParameter() == null) {
            // error, missing binding parameter
            MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, binding, model, null, null, Msg.MISSING_PARAMETER_FOR_INVOCATION, node.getIdentifierString());
            return null;
        }
        if (binding.getExpression() == null) {
            MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, binding, model, null, null, Msg.MISSING_EXPRESSION_FOR_PARAM_OF_INVOCATION, binding.getParameter().getIdentifierString(), node.getIdentifierString());
            return null;
        }
        invEval.addParameter(binding.getParameter().getName(), compiler.resolveTypeRef(model, binding.getParameter(), binding.getParameter(), binding.getParameter().getTypeRef()), compileExpression(ctx, model, node, binding.getParameter().getName(), binding.getExpression()));
    }
    return invEval;
}
Also used : Binding(org.kie.dmn.model.api.Binding) Invocation(org.kie.dmn.model.api.Invocation) LiteralExpression(org.kie.dmn.model.api.LiteralExpression) DMNNode(org.kie.dmn.api.core.ast.DMNNode) DMNInvocationEvaluator(org.kie.dmn.core.ast.DMNInvocationEvaluator)

Aggregations

DMNInvocationEvaluator (org.kie.dmn.core.ast.DMNInvocationEvaluator)3 ArrayList (java.util.ArrayList)2 Collections (java.util.Collections)2 List (java.util.List)2 Optional (java.util.Optional)2 Collectors (java.util.stream.Collectors)2 Collectors.toList (java.util.stream.Collectors.toList)2 QName (javax.xml.namespace.QName)2 DMNMessage (org.kie.dmn.api.core.DMNMessage)2 DMNType (org.kie.dmn.api.core.DMNType)2 BusinessKnowledgeModelNode (org.kie.dmn.api.core.ast.BusinessKnowledgeModelNode)2 DMNNode (org.kie.dmn.api.core.ast.DMNNode)2 DecisionNode (org.kie.dmn.api.core.ast.DecisionNode)2 DMNExpressionEvaluator (org.kie.dmn.core.api.DMNExpressionEvaluator)2 EvaluatorResult (org.kie.dmn.core.api.EvaluatorResult)2 DMNBaseNode (org.kie.dmn.core.ast.DMNBaseNode)2 DMNContextEvaluator (org.kie.dmn.core.ast.DMNContextEvaluator)2 DMNDTExpressionEvaluator (org.kie.dmn.core.ast.DMNDTExpressionEvaluator)2 DMNFunctionDefinitionEvaluator (org.kie.dmn.core.ast.DMNFunctionDefinitionEvaluator)2 DMNListEvaluator (org.kie.dmn.core.ast.DMNListEvaluator)2