Examples with Expression org.eclipse.xtext.resource.bug385636.Expression used on opensource projects

Example 16 with Expression

use of org.eclipse.xtext.resource.bug385636.Expression 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);
}

Example 17 with Expression

use of org.eclipse.xtext.resource.bug385636.Expression in project drools by kiegroup.

the class DMNEvaluatorCompiler method compileRelation.

private DMNExpressionEvaluator compileRelation(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String relationName, Relation expression) {
    Relation relationDef = expression;
    DMNRelationEvaluator relationEval = new DMNRelationEvaluator(node.getName(), node.getSource(), relationDef);
    for (InformationItem col : relationDef.getColumn()) {
        DMNCompilerHelper.checkVariableName(model, col, col.getName());
        relationEval.addColumn(col.getName());
    }
    for (org.kie.dmn.model.v1_1.List row : relationDef.getRow()) {
        java.util.List<DMNExpressionEvaluator> values = new ArrayList<>();
        for (Expression expr : row.getExpression()) {
            values.add(compileExpression(ctx, model, node, relationName, expr));
        }
        relationEval.addRow(values);
    }
    return relationEval;
}

Example 18 with Expression

use of org.eclipse.xtext.resource.bug385636.Expression in project drools by kiegroup.

the class ExpressionConverter method writeAttributes.

@Override
protected void writeAttributes(HierarchicalStreamWriter writer, Object parent) {
    super.writeAttributes(writer, parent);
    Expression e = (Expression) parent;
    if (e.getTypeRef() != null)
        writer.addAttribute(TYPE_REF, MarshallingUtils.formatQName(e.getTypeRef()));
}