Examples with StringLiteralExpr org.drools.javaparser.ast.expr.StringLiteralExpr used on opensource projects

Example 1 with StringLiteralExpr

use of org.drools.javaparser.ast.expr.StringLiteralExpr in project drools by kiegroup.

the class ModelGenerator method ruleMetaAttributes.

/**
 * Build a list of method calls, representing each needed {@link org.drools.model.impl.RuleBuilder#metadata(String, Object)}
 * starting from a drools-compiler {@link RuleDescr}.
 */
private static List<MethodCallExpr> ruleMetaAttributes(RuleContext context, RuleDescr ruleDescr) {
    List<MethodCallExpr> ruleMetaAttributes = new ArrayList<>();
    for (String metaAttr : ruleDescr.getAnnotationNames()) {
        MethodCallExpr metaAttributeCall = new MethodCallExpr(METADATA_CALL);
        metaAttributeCall.addArgument(new StringLiteralExpr(metaAttr));
        AnnotationDescr ad = ruleDescr.getAnnotation(metaAttr);
        String adFqn = ad.getFullyQualifiedName();
        if (adFqn != null) {
            AnnotationDefinition annotationDefinition;
            try {
                annotationDefinition = AnnotationDefinition.build(context.getTypeResolver().resolveType(adFqn), ad.getValueMap(), context.getTypeResolver());
            } catch (NoSuchMethodException | ClassNotFoundException e) {
                throw new RuntimeException(e);
            }
            if (annotationDefinition.getValues().size() == 1 && annotationDefinition.getValues().containsKey(AnnotationDescr.VALUE)) {
                Object annValue = annotationDefinition.getPropertyValue(AnnotationDescr.VALUE);
                metaAttributeCall.addArgument(new StringLiteralExpr(annValue.toString()));
            } else {
                Map<String, Object> map = new HashMap<>(annotationDefinition.getValues().size());
                for (String key : annotationDefinition.getValues().keySet()) {
                    map.put(key, annotationDefinition.getPropertyValue(key));
                }
                metaAttributeCall.addArgument(objectAsJPExpression(map));
            }
        } else {
            if (ad.hasValue()) {
                if (ad.getValues().size() == 1) {
                    metaAttributeCall.addArgument(objectAsJPExpression(resolveValue(ad.getSingleValueAsString())));
                } else {
                    metaAttributeCall.addArgument(objectAsJPExpression(ad.getValueMap()));
                }
            } else {
                metaAttributeCall.addArgument(new NullLiteralExpr());
            }
        }
        ruleMetaAttributes.add(metaAttributeCall);
    }
    return ruleMetaAttributes;
}

Example 2 with StringLiteralExpr

use of org.drools.javaparser.ast.expr.StringLiteralExpr in project drools by kiegroup.

the class ModelGenerator method processRule.

private static void processRule(KnowledgeBuilderImpl kbuilder, TypeResolver typeResolver, PackageModel packageModel, PackageDescr packageDescr, RuleDescr ruleDescr, boolean isPattern) {
    RuleContext context = new RuleContext(kbuilder, packageModel, ruleDescr, typeResolver, isPattern);
    for (Entry<String, Object> kv : ruleDescr.getNamedConsequences().entrySet()) {
        context.addNamedConsequence(kv.getKey(), kv.getValue().toString());
    }
    new ModelGeneratorVisitor(context, packageModel).visit(getExtendedLhs(packageDescr, ruleDescr));
    final String ruleMethodName = "rule_" + toId(ruleDescr.getName());
    MethodDeclaration ruleMethod = new MethodDeclaration(EnumSet.of(Modifier.PUBLIC, Modifier.STATIC), RULE_TYPE, ruleMethodName);
    ruleMethod.setJavadocComment(" Rule name: " + ruleDescr.getName() + " ");
    VariableDeclarationExpr ruleVar = new VariableDeclarationExpr(RULE_TYPE, RULE_CALL);
    MethodCallExpr ruleCall = new MethodCallExpr(null, RULE_CALL);
    if (!ruleDescr.getNamespace().isEmpty()) {
        ruleCall.addArgument(new StringLiteralExpr(ruleDescr.getNamespace()));
    }
    ruleCall.addArgument(new StringLiteralExpr(ruleDescr.getName()));
    RuleUnitDescr ruleUnitDescr = context.getRuleUnitDescr();
    MethodCallExpr buildCallScope = ruleUnitDescr != null ? new MethodCallExpr(ruleCall, UNIT_CALL).addArgument(new ClassExpr(classToReferenceType(ruleUnitDescr.getRuleUnitClass()))) : ruleCall;
    for (MethodCallExpr attributeExpr : ruleAttributes(context, ruleDescr)) {
        attributeExpr.setScope(buildCallScope);
        buildCallScope = attributeExpr;
    }
    for (MethodCallExpr metaAttributeExpr : ruleMetaAttributes(context, ruleDescr)) {
        metaAttributeExpr.setScope(buildCallScope);
        buildCallScope = metaAttributeExpr;
    }
    MethodCallExpr buildCall = new MethodCallExpr(buildCallScope, BUILD_CALL, NodeList.nodeList(context.getExpressions()));
    BlockStmt ruleVariablesBlock = new BlockStmt();
    createUnitData(ruleUnitDescr, ruleVariablesBlock);
    createVariables(kbuilder, ruleVariablesBlock, packageModel, context);
    ruleMethod.setBody(ruleVariablesBlock);
    MethodCallExpr executeCall = new Consequence(context).createCall(ruleDescr, ruleDescr.getConsequence().toString(), ruleVariablesBlock, false);
    buildCall.addArgument(executeCall);
    ruleVariablesBlock.addStatement(new AssignExpr(ruleVar, buildCall, AssignExpr.Operator.ASSIGN));
    ruleVariablesBlock.addStatement(new ReturnStmt(RULE_CALL));
    packageModel.putRuleMethod(ruleMethodName, ruleMethod);
}

Example 3 with StringLiteralExpr

use of org.drools.javaparser.ast.expr.StringLiteralExpr in project drools by kiegroup.

the class POJOGenerator method registerTypeMetaData.

private static MethodCallExpr registerTypeMetaData(String pkg, String name) {
    MethodCallExpr typeMetaDataCall = new MethodCallExpr(null, TYPE_META_DATA_CALL);
    typeMetaDataCall.addArgument(new StringLiteralExpr(pkg));
    typeMetaDataCall.addArgument(new StringLiteralExpr(name));
    return typeMetaDataCall;
}

Example 4 with StringLiteralExpr

use of org.drools.javaparser.ast.expr.StringLiteralExpr in project drools by kiegroup.

the class POJOGenerator method processType.

private static void processType(PackageModel packageModel, TypeDeclarationDescr typeDescr, Class<?> type) {
    MethodCallExpr typeMetaDataCall = registerTypeMetaData(type.getPackage().getName(), type.getSimpleName());
    for (AnnotationDescr ann : typeDescr.getAnnotations()) {
        typeMetaDataCall = new MethodCallExpr(typeMetaDataCall, "addAnnotation");
        typeMetaDataCall.addArgument(new StringLiteralExpr(ann.getName()));
        for (Map.Entry<String, Object> entry : ann.getValueMap().entrySet()) {
            MethodCallExpr annotationValueCall = new MethodCallExpr(null, "annotationValue");
            annotationValueCall.addArgument(new StringLiteralExpr(entry.getKey()));
            annotationValueCall.addArgument(new StringLiteralExpr(entry.getValue().toString()));
            typeMetaDataCall.addArgument(annotationValueCall);
        }
    }
    packageModel.addTypeMetaDataExpressions(typeMetaDataCall);
}

Example 5 with StringLiteralExpr

use of org.drools.javaparser.ast.expr.StringLiteralExpr in project drools by kiegroup.

the class ConstraintParser method getDrlxParseResult.

private DrlxParseResult getDrlxParseResult(Class<?> patternType, String bindingId, String expression, DrlxExpression drlx, boolean isPositional) {
    Expression drlxExpr = drlx.getExpr();
    boolean isEnclosed = false;
    while (drlxExpr instanceof EnclosedExpr) {
        drlxExpr = ((EnclosedExpr) drlxExpr).getInner();
        isEnclosed = true;
    }
    if (drlxExpr instanceof MethodCallExpr && !((MethodCallExpr) drlxExpr).getScope().isPresent() && ((MethodCallExpr) drlxExpr).getNameAsString().equals("eval")) {
        drlxExpr = ((MethodCallExpr) drlxExpr).getArgument(0);
    }
    String exprId;
    if (GENERATE_EXPR_ID) {
        exprId = context.getExprId(patternType, expression);
    }
    if (drlxExpr instanceof BinaryExpr) {
        BinaryExpr binaryExpr = (BinaryExpr) drlxExpr;
        BinaryExpr.Operator operator = binaryExpr.getOperator();
        IndexUtil.ConstraintType decodeConstraintType = DrlxParseUtil.toConstraintType(operator);
        final ExpressionTyperContext expressionTyperContext = new ExpressionTyperContext();
        final ExpressionTyper expressionTyper = new ExpressionTyper(context, patternType, bindingId, isPositional, expressionTyperContext);
        TypedExpressionResult leftTypedExpressionResult = expressionTyper.toTypedExpression(binaryExpr.getLeft());
        Optional<TypedExpression> optLeft = leftTypedExpressionResult.getTypedExpression();
        if (!optLeft.isPresent()) {
            return new DrlxParseFail();
        }
        List<String> usedDeclarationsOnLeft = drlx.getBind() == null ? null : new ArrayList<>(expressionTyperContext.getUsedDeclarations());
        TypedExpressionResult rightExpressionResult = expressionTyper.toTypedExpression(binaryExpr.getRight());
        Optional<TypedExpression> optRight = rightExpressionResult.getTypedExpression();
        if (!optRight.isPresent()) {
            context.addCompilationError(new ParseExpressionErrorResult(drlxExpr));
            return new DrlxParseFail();
        }
        TypedExpression left = optLeft.get();
        TypedExpression right = optRight.get();
        Expression combo;
        if (left.isPrimitive()) {
            if (!right.getType().isPrimitive() && !Number.class.isAssignableFrom(right.getType()) && !Boolean.class.isAssignableFrom(right.getType()) && !String.class.isAssignableFrom(right.getType())) {
                context.addCompilationError(new InvalidExpressionErrorResult("Comparison operation requires compatible types. Found " + left.getType() + " and " + right.getType()));
                return new DrlxParseFail();
            }
            if (right.getExpression() instanceof StringLiteralExpr) {
                right.setExpression(new IntegerLiteralExpr(((StringLiteralExpr) right.getExpression()).asString()));
            } else if (right.getExpression() instanceof LiteralStringValueExpr) {
                right.setExpression(coerceLiteralExprToType((LiteralStringValueExpr) right.getExpression(), left.getType()));
            }
            combo = new BinaryExpr(left.getExpression(), right.getExpression(), operator);
        } else {
            coerceRightExpression(left, right);
            switch(operator) {
                case EQUALS:
                case NOT_EQUALS:
                    combo = getEqualityExpression(left, right, operator);
                    break;
                default:
                    if (left.getExpression() == null || right.getExpression() == null) {
                        context.addCompilationError(new ParseExpressionErrorResult(drlxExpr));
                        return new DrlxParseFail();
                    }
                    combo = handleSpecialComparisonCases(operator, left, right);
            }
        }
        for (Expression e : leftTypedExpressionResult.getPrefixExpressions()) {
            combo = new BinaryExpr(e, combo, BinaryExpr.Operator.AND);
        }
        boolean isBetaNode = false;
        if (right.getExpression() instanceof BinaryExpr) {
            if (((BinaryExpr) right.getExpression()).getRight() instanceof MethodCallExpr) {
                isBetaNode = true;
            }
        } else if (right.getExpression() instanceof NameExpr) {
            isBetaNode = true;
        }
        if (isEnclosed) {
            combo = new EnclosedExpr(combo);
        }
        return new DrlxParseSuccess(patternType, exprId, bindingId, combo, left.getType()).setDecodeConstraintType(decodeConstraintType).setUsedDeclarations(expressionTyperContext.getUsedDeclarations()).setUsedDeclarationsOnLeft(usedDeclarationsOnLeft).setReactOnProperties(expressionTyperContext.getReactOnProperties()).setLeft(left).setRight(right).setBetaNode(isBetaNode);
    }
    if (drlxExpr instanceof UnaryExpr) {
        UnaryExpr unaryExpr = (UnaryExpr) drlxExpr;
        TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, patternType, bindingId, isPositional).toTypedExpression(unaryExpr);
        return typedExpressionResult.getTypedExpression().<DrlxParseResult>map(left -> {
            return new DrlxParseSuccess(patternType, exprId, bindingId, left.getExpression(), left.getType()).setUsedDeclarations(typedExpressionResult.getUsedDeclarations()).setReactOnProperties(typedExpressionResult.getReactOnProperties()).setLeft(left);
        }).orElse(new DrlxParseFail());
    }
    if (drlxExpr instanceof PointFreeExpr) {
        PointFreeExpr pointFreeExpr = (PointFreeExpr) drlxExpr;
        TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, patternType, bindingId, isPositional).toTypedExpression(pointFreeExpr);
        final Optional<TypedExpression> optTypedExpression = typedExpressionResult.getTypedExpression();
        return optTypedExpression.<DrlxParseResult>map(typedExpression -> {
            final Expression returnExpression = typedExpression.getExpression();
            final Class<?> returnType = typedExpression.getType();
            return new DrlxParseSuccess(patternType, exprId, bindingId, returnExpression, returnType).setUsedDeclarations(typedExpressionResult.getUsedDeclarations()).setReactOnProperties(typedExpressionResult.getReactOnProperties()).setLeft(typedExpression.getLeft()).setStatic(typedExpression.isStatic()).setValidExpression(true);
        }).orElse(new DrlxParseFail());
    }
    if (drlxExpr instanceof MethodCallExpr) {
        MethodCallExpr methodCallExpr = (MethodCallExpr) drlxExpr;
        // when the methodCallExpr will be placed in the model/DSL, any parameter being a "this" need to be implemented as _this by convention.
        List<ThisExpr> rewriteThisExprs = recurseCollectArguments(methodCallExpr).stream().filter(ThisExpr.class::isInstance).map(ThisExpr.class::cast).collect(Collectors.toList());
        for (ThisExpr t : rewriteThisExprs) {
            methodCallExpr.replace(t, new NameExpr("_this"));
        }
        Optional<MethodDeclaration> functionCall = packageModel.getFunctions().stream().filter(m -> m.getName().equals(methodCallExpr.getName())).findFirst();
        if (functionCall.isPresent()) {
            Class<?> returnType = DrlxParseUtil.getClassFromContext(context.getTypeResolver(), functionCall.get().getType().asString());
            NodeList<Expression> arguments = methodCallExpr.getArguments();
            List<String> usedDeclarations = new ArrayList<>();
            for (Expression arg : arguments) {
                if (arg instanceof NameExpr && !arg.toString().equals("_this")) {
                    usedDeclarations.add(arg.toString());
                } else if (arg instanceof MethodCallExpr) {
                    TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, null, bindingId, isPositional).toTypedExpression(arg);
                    usedDeclarations.addAll(typedExpressionResult.getUsedDeclarations());
                }
            }
            return new DrlxParseSuccess(patternType, exprId, bindingId, methodCallExpr, returnType).setUsedDeclarations(usedDeclarations);
        } else if (methodCallExpr.getScope().isPresent() && methodCallExpr.getScope().get() instanceof StringLiteralExpr) {
            TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, String.class, bindingId, isPositional).toTypedExpression(methodCallExpr);
            Optional<TypedExpression> optConverted = typedExpressionResult.getTypedExpression();
            return optConverted.<DrlxParseResult>map(converted -> {
                return new DrlxParseSuccess(String.class, exprId, bindingId, converted.getExpression(), converted.getType()).setLeft(converted).setUsedDeclarations(typedExpressionResult.getUsedDeclarations());
            }).orElse(new DrlxParseFail());
        } else if (patternType != null) {
            NameExpr _this = new NameExpr("_this");
            TypedExpression converted = DrlxParseUtil.toMethodCallWithClassCheck(context, methodCallExpr, bindingId, patternType, context.getTypeResolver());
            Expression withThis = DrlxParseUtil.prepend(_this, converted.getExpression());
            return new DrlxParseSuccess(patternType, exprId, bindingId, withThis, converted.getType()).setLeft(converted);
        } else {
            return new DrlxParseSuccess(patternType, exprId, bindingId, methodCallExpr, null);
        }
    }
    if (drlxExpr instanceof FieldAccessExpr) {
        FieldAccessExpr fieldCallExpr = (FieldAccessExpr) drlxExpr;
        NameExpr _this = new NameExpr("_this");
        TypedExpression converted = DrlxParseUtil.toMethodCallWithClassCheck(context, fieldCallExpr, bindingId, patternType, context.getTypeResolver());
        Expression withThis = DrlxParseUtil.prepend(_this, converted.getExpression());
        return new DrlxParseSuccess(patternType, exprId, bindingId, withThis, converted.getType()).setLeft(converted);
    }
    if (drlxExpr instanceof NameExpr) {
        NameExpr nameExpr = (NameExpr) drlxExpr;
        NameExpr _this = new NameExpr("_this");
        TypedExpression converted = DrlxParseUtil.toMethodCallWithClassCheck(context, nameExpr, bindingId, patternType, context.getTypeResolver());
        Expression withThis = DrlxParseUtil.prepend(_this, converted.getExpression());
        if (drlx.getBind() != null) {
            return new DrlxParseSuccess(patternType, exprId, bindingId, null, converted.getType()).setLeft(new TypedExpression(withThis, converted.getType())).addReactOnProperty(lcFirst(nameExpr.getNameAsString()));
        } else {
            return new DrlxParseSuccess(patternType, exprId, bindingId, withThis, converted.getType()).addReactOnProperty(nameExpr.getNameAsString());
        }
    }
    if (drlxExpr instanceof OOPathExpr) {
        return new DrlxParseSuccess(patternType, exprId, bindingId, drlxExpr, null);
    }
    if (drlxExpr instanceof LiteralExpr) {
        return new DrlxParseSuccess(patternType, exprId, bindingId, drlxExpr, getLiteralExpressionType(((LiteralExpr) drlxExpr)));
    }
    // TODO
    throw new UnsupportedOperationException("Unknown expression: " + toDrlx(drlxExpr));
}