Examples with ConstructorDeclaration org.drools.javaparser.ast.body.ConstructorDeclaration used on opensource projects

Example 1 with ConstructorDeclaration

use of org.drools.javaparser.ast.body.ConstructorDeclaration in project drools by kiegroup.

the class POJOGenerator method toClassDeclaration.

/**
 * @param packageDescr
 */
public static ClassOrInterfaceDeclaration toClassDeclaration(TypeDeclarationDescr typeDeclaration, PackageDescr packageDescr) {
    EnumSet<Modifier> classModifiers = EnumSet.of(Modifier.PUBLIC);
    String generatedClassName = typeDeclaration.getTypeName();
    ClassOrInterfaceDeclaration generatedClass = new ClassOrInterfaceDeclaration(classModifiers, false, generatedClassName);
    generatedClass.addImplementedType(GeneratedFact.class.getName());
    // Ref: {@link org.drools.core.factmodel.DefaultBeanClassBuilder} by default always receive is Serializable.
    generatedClass.addImplementedType(Serializable.class.getName());
    boolean hasSuper = typeDeclaration.getSuperTypeName() != null;
    if (hasSuper) {
        generatedClass.addExtendedType(typeDeclaration.getSuperTypeName());
    }
    List<AnnotationDescr> softAnnotations = new ArrayList<>();
    for (AnnotationDescr ann : typeDeclaration.getAnnotations()) {
        final String annFqn = Optional.ofNullable(ann.getFullyQualifiedName()).orElse(Optional.ofNullable(predefinedClassLevelAnnotation.get(ann.getName())).map(Class::getCanonicalName).orElse(null));
        if (annFqn != null) {
            NormalAnnotationExpr annExpr = generatedClass.addAndGetAnnotation(annFqn);
            ann.getValueMap().forEach((k, v) -> annExpr.addPair(k, getAnnotationValue(annFqn, k, v.toString())));
        } else {
            softAnnotations.add(ann);
        }
    }
    if (softAnnotations.size() > 0) {
        String softAnnDictionary = softAnnotations.stream().map(a -> "<dt>" + a.getName() + "</dt><dd>" + a.getValuesAsString() + "</dd>").collect(Collectors.joining());
        JavadocComment generatedClassJavadoc = new JavadocComment("<dl>" + softAnnDictionary + "</dl>");
        generatedClass.setJavadocComment(generatedClassJavadoc);
    }
    // No-args ctor
    generatedClass.addConstructor(Modifier.PUBLIC);
    List<Statement> equalsFieldStatement = new ArrayList<>();
    List<Statement> hashCodeFieldStatement = new ArrayList<>();
    List<String> toStringFieldStatement = new ArrayList<>();
    List<TypeFieldDescr> keyFields = new ArrayList<>();
    Collection<TypeFieldDescr> inheritedFields = findInheritedDeclaredFields(typeDeclaration, packageDescr);
    Collection<TypeFieldDescr> typeFields = typeDeclaration.getFields().values();
    if (!inheritedFields.isEmpty() || !typeDeclaration.getFields().isEmpty()) {
        ConstructorDeclaration fullArgumentsCtor = generatedClass.addConstructor(Modifier.PUBLIC);
        NodeList<Statement> ctorFieldStatement = NodeList.nodeList();
        MethodCallExpr superCall = new MethodCallExpr(null, "super");
        for (TypeFieldDescr typeFieldDescr : inheritedFields) {
            String fieldName = typeFieldDescr.getFieldName();
            addCtorArg(fullArgumentsCtor, typeFieldDescr.getPattern().getObjectType(), fieldName);
            superCall.addArgument(fieldName);
            if (typeFieldDescr.getAnnotation("key") != null) {
                keyFields.add(typeFieldDescr);
            }
        }
        ctorFieldStatement.add(new ExpressionStmt(superCall));
        int position = inheritedFields.size();
        for (TypeFieldDescr typeFieldDescr : typeFields) {
            String fieldName = typeFieldDescr.getFieldName();
            Type returnType = addCtorArg(fullArgumentsCtor, typeFieldDescr.getPattern().getObjectType(), fieldName);
            FieldDeclaration field = generatedClass.addField(returnType, fieldName, Modifier.PRIVATE);
            field.createSetter();
            field.addAndGetAnnotation(Position.class.getName()).addPair("value", "" + position++);
            MethodDeclaration getter = field.createGetter();
            equalsFieldStatement.add(generateEqualsForField(getter, fieldName));
            hashCodeFieldStatement.addAll(generateHashCodeForField(getter, fieldName));
            ctorFieldStatement.add(replaceFieldName(parseStatement("this.__fieldName = __fieldName;"), fieldName));
            toStringFieldStatement.add(format("+ {0}+{1}", quote(fieldName + "="), fieldName));
            if (typeFieldDescr.getAnnotation("key") != null) {
                keyFields.add(typeFieldDescr);
            }
        }
        fullArgumentsCtor.setBody(new BlockStmt(ctorFieldStatement));
        if (!keyFields.isEmpty() && keyFields.size() != inheritedFields.size() + typeFields.size()) {
            ConstructorDeclaration keyArgumentsCtor = generatedClass.addConstructor(Modifier.PUBLIC);
            NodeList<Statement> ctorKeyFieldStatement = NodeList.nodeList();
            MethodCallExpr keySuperCall = new MethodCallExpr(null, "super");
            ctorKeyFieldStatement.add(new ExpressionStmt(keySuperCall));
            for (TypeFieldDescr typeFieldDescr : keyFields) {
                String fieldName = typeFieldDescr.getFieldName();
                addCtorArg(keyArgumentsCtor, typeFieldDescr.getPattern().getObjectType(), fieldName);
                if (typeDeclaration.getFields().get(fieldName) != null) {
                    ctorKeyFieldStatement.add(replaceFieldName(parseStatement("this.__fieldName = __fieldName;"), fieldName));
                } else {
                    keySuperCall.addArgument(fieldName);
                }
            }
            keyArgumentsCtor.setBody(new BlockStmt(ctorKeyFieldStatement));
        }
        if (hasSuper) {
            generatedClass.addMember(generateEqualsMethod(generatedClassName, equalsFieldStatement));
            generatedClass.addMember(generateHashCodeMethod(hashCodeFieldStatement));
        }
    }
    generatedClass.addMember(generateToStringMethod(generatedClassName, toStringFieldStatement));
    return generatedClass;
}