public WrapperHelper createWrapperHelper()

in rt/databinding/jaxb/src/main/java/org/apache/cxf/jaxb/JAXBDataBinding.java [648:818]
144 lines of code
43 McCabe index (conditional complexity)

    public WrapperHelper createWrapperHelper(Class<?> wrapperType, QName wrapperName, List<String> partNames,
                                             List<String> elTypeNames, List<Class<?>> partClasses) {
        List<Method> getMethods = new ArrayList<>(partNames.size());
        List<Method> setMethods = new ArrayList<>(partNames.size());
        List<Method> jaxbMethods = new ArrayList<>(partNames.size());
        List<Field> fields = new ArrayList<>(partNames.size());

        Method[] allMethods = wrapperType.getMethods();
        String packageName = PackageUtils.getPackageName(wrapperType);

        //if wrappertype class is generated by ASM, getPackage() always return null
        if (wrapperType.getPackage() != null) {
            packageName = wrapperType.getPackage().getName();
        }

        String objectFactoryClassName = packageName + ".ObjectFactory";

        Object objectFactory = null;
        try {
            objectFactory = wrapperType.getClassLoader().loadClass(objectFactoryClassName)
                .getDeclaredConstructor().newInstance();
        } catch (Exception e) {
            //ignore, probably won't need it
        }
        Method[] allOFMethods;
        if (objectFactory != null) {
            allOFMethods = objectFactory.getClass().getMethods();
        } else {
            allOFMethods = new Method[0];
        }

        for (int x = 0; x < partNames.size(); x++) {
            String partName = partNames.get(x);
            if (partName == null) {
                getMethods.add(null);
                setMethods.add(null);
                fields.add(null);
                jaxbMethods.add(null);
                continue;
            }

            String elementType = elTypeNames.get(x);

            String getAccessor = JAXBUtils.nameToIdentifier(partName, JAXBUtils.IdentifierType.GETTER);
            String setAccessor = JAXBUtils.nameToIdentifier(partName, JAXBUtils.IdentifierType.SETTER);
            Method getMethod = null;
            Method setMethod = null;
            Class<?> valueClass = wrapperType;

            try {
                getMethod = valueClass.getMethod(getAccessor, AbstractWrapperHelper.NO_CLASSES);
            } catch (NoSuchMethodException ex) {
                //ignore for now
            }

            Field elField = getElField(partName, valueClass);
            if (getMethod == null
                && elementType != null
                && "boolean".equalsIgnoreCase(elementType)
                && (elField == null
                    || (!Collection.class.isAssignableFrom(elField.getType())
                    && !elField.getType().isArray()))) {

                try {
                    String newAcc = getAccessor.replaceFirst("get", "is");
                    getMethod = wrapperType.getMethod(newAcc, AbstractWrapperHelper.NO_CLASSES);
                } catch (NoSuchMethodException ex) {
                    //ignore for now
                }
            }
            if (getMethod == null
                && "return".equals(partName)) {
                //RI generated code uses this
                try {
                    getMethod = valueClass.getMethod("get_return", AbstractWrapperHelper.NO_CLASSES);
                } catch (NoSuchMethodException ex) {
                    try {
                        getMethod = valueClass.getMethod("is_return",
                                                          new Class[0]);
                    } catch (NoSuchMethodException ex2) {
                        //ignore for now
                    }
                }
            }
            if (getMethod == null && elField != null) {
                getAccessor = JAXBUtils.nameToIdentifier(elField.getName(), JAXBUtils.IdentifierType.GETTER);
                setAccessor = JAXBUtils.nameToIdentifier(elField.getName(), JAXBUtils.IdentifierType.SETTER);
                try {
                    getMethod = valueClass.getMethod(getAccessor, AbstractWrapperHelper.NO_CLASSES);
                } catch (NoSuchMethodException ex) {
                    //ignore for now
                }
            }
            String setAccessor2 = setAccessor;
            if ("return".equals(partName)) {
                //some versions of jaxb map "return" to "set_return" instead of "setReturn"
                setAccessor2 = "set_return";
            }

            for (Method method : allMethods) {
                if (method.getParameterTypes() != null && method.getParameterTypes().length == 1
                    && (setAccessor.equals(method.getName())
                        || setAccessor2.equals(method.getName()))) {
                    setMethod = method;
                    break;
                }
            }

            getMethods.add(getMethod);
            setMethods.add(setMethod);
            if (setMethod != null
                && JAXBElement.class.isAssignableFrom(setMethod.getParameterTypes()[0])) {

                Type t = setMethod.getGenericParameterTypes()[0];
                Class<?> pcls = null;
                if (t instanceof ParameterizedType) {
                    t = ((ParameterizedType)t).getActualTypeArguments()[0];
                }
                if (t instanceof Class) {
                    pcls = (Class<?>)t;
                }

                String methodName = "create" + wrapperType.getSimpleName()
                    + setMethod.getName().substring(3);

                for (Method m : allOFMethods) {
                    if (m.getName().equals(methodName)
                        && m.getParameterTypes().length == 1
                        && (pcls == null
                            || pcls.equals(m.getParameterTypes()[0]))) {
                        jaxbMethods.add(m);
                    }
                }
            } else {
                jaxbMethods.add(null);
            }

            if (elField != null) {
                // JAXB Type get XmlElement Annotation
                XmlElement el = elField.getAnnotation(XmlElement.class);
                if (el != null
                    && (partName.equals(el.name())
                        || "##default".equals(el.name()))) {
                    ReflectionUtil.setAccessible(elField);
                    fields.add(elField);
                } else {
                    if (getMethod == null && setMethod == null) {
                        if (el != null) {
                            LOG.warning("Could not create accessor for property " + partName
                                        + " of type " + wrapperType.getName() + " as the @XmlElement "
                                        + "defines the name as " + el.name());
                        } else {
                            LOG.warning("Could not create accessor for property " + partName
                                        + " of type " + wrapperType.getName());
                        }
                    }
                    fields.add(null);
                }
            } else {
                fields.add(null);
            }

        }

        return createWrapperHelper(getBus(), wrapperType,
                                 setMethods.toArray(new Method[0]),
                                 getMethods.toArray(new Method[0]),
                                 jaxbMethods.toArray(new Method[0]),
                                 fields.toArray(new Field[0]),
                                 objectFactory);
    }