Examples with FunctionDefinition org.kie.dmn.model.api.FunctionDefinition used on opensource projects

Example 6 with FunctionDefinition

use of org.kie.dmn.model.api.FunctionDefinition 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);
}

Example 7 with FunctionDefinition

use of org.kie.dmn.model.api.FunctionDefinition 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 {
        loadInCtx(bkmi, ctx, model);
        // 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();
        if (bkmi.getType() != null && funcDef != null) {
            checkFnConsistency(model, bkmi, bkmi.getType(), funcDef);
        }
        DMNExpressionEvaluator exprEvaluator = compiler.getEvaluatorCompiler().compileExpression(ctx, model, bkmi, bkmi.getName(), funcDef);
        bkmi.setEvaluator(exprEvaluator);
    } finally {
        ctx.exitFrame();
    }
}

Example 8 with FunctionDefinition

use of org.kie.dmn.model.api.FunctionDefinition in project drools by kiegroup.

the class FunctionDefinitionConverter method writeChildren.

@Override
protected void writeChildren(HierarchicalStreamWriter writer, MarshallingContext context, Object parent) {
    super.writeChildren(writer, context, parent);
    FunctionDefinition fd = (FunctionDefinition) parent;
    for (InformationItem fparam : fd.getFormalParameter()) {
        writeChildrenNode(writer, context, fparam, FORMAL_PARAMETER);
    }
    if (fd.getExpression() != null)
        writeChildrenNode(writer, context, fd.getExpression(), MarshallingUtils.defineExpressionNodeName(fd.getExpression()));
}

Example 9 with FunctionDefinition

use of org.kie.dmn.model.api.FunctionDefinition in project drools by kiegroup.

the class FunctionDefinitionConverter method writeAttributes.

@Override
protected void writeAttributes(HierarchicalStreamWriter writer, Object parent) {
    super.writeAttributes(writer, parent);
    FunctionDefinition fd = (FunctionDefinition) parent;
    writer.addAttribute(KIND, fd.getKind().value());
}

Example 10 with FunctionDefinition

use of org.kie.dmn.model.api.FunctionDefinition in project drools by kiegroup.

the class DMNEvaluatorCompiler method compileFunctionDefinitionPMML.

private DMNExpressionEvaluator compileFunctionDefinitionPMML(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String functionName, FunctionDefinition funcDef) {
    if (funcDef.getExpression() instanceof Context) {
        Context context = (Context) funcDef.getExpression();
        String pmmlDocument = null;
        String pmmlModel = null;
        for (ContextEntry ce : context.getContextEntry()) {
            if (ce.getVariable() != null && ce.getVariable().getName() != null && ce.getExpression() instanceof LiteralExpression) {
                LiteralExpression ceLitExpr = (LiteralExpression) ce.getExpression();
                if (ce.getVariable().getName().equals("document")) {
                    if (ceLitExpr.getText() != null) {
                        pmmlDocument = stripQuotes(ceLitExpr.getText().trim());
                    }
                } else if (ce.getVariable().getName().equals("model")) {
                    if (ceLitExpr.getText() != null) {
                        pmmlModel = stripQuotes(ceLitExpr.getText().trim());
                    }
                }
            }
        }
        final String nameLookup = pmmlDocument;
        Optional<Import> lookupImport = model.getDefinitions().getImport().stream().filter(x -> x.getName().equals(nameLookup)).findFirst();
        if (lookupImport.isPresent()) {
            Import theImport = lookupImport.get();
            logger.trace("theImport: {}", theImport);
            Resource pmmlResource = DMNCompilerImpl.resolveRelativeResource(getRootClassLoader(), model, theImport, funcDef, ctx.getRelativeResolver());
            logger.trace("pmmlResource: {}", pmmlResource);
            DMNImportPMMLInfo pmmlInfo = model.getPmmlImportInfo().get(pmmlDocument);
            logger.trace("pmmlInfo: {}", pmmlInfo);
            if (pmmlModel == null || pmmlModel.isEmpty()) {
                List<String> pmmlModelNames = pmmlInfo.getModels().stream().map(PMMLModelInfo::getName).filter(x -> x != null).collect(Collectors.toList());
                if (pmmlModelNames.size() > 0) {
                    MsgUtil.reportMessage(logger, DMNMessage.Severity.WARN, funcDef, model, null, null, Msg.FUNC_DEF_PMML_MISSING_MODEL_NAME, pmmlModelNames.stream().collect(Collectors.joining(",")));
                }
            }
            AbstractPMMLInvocationEvaluator invoker = PMMLInvocationEvaluatorFactory.newInstance(model, getRootClassLoader(), funcDef, pmmlResource, pmmlModel, pmmlInfo);
            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);
            }
            func.setEvaluator(invoker);
            return func;
        } else {
            MsgUtil.reportMessage(logger, DMNMessage.Severity.ERROR, funcDef, model, null, null, Msg.FUNC_DEF_PMML_MISSING_ENTRY, functionName, node.getIdentifierString());
        }
    } else {
        // error, PMML 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);
}