public static Exception unmarshallException()

in rt/databinding/jaxb/src/main/java/org/apache/cxf/jaxb/JAXBEncoderDecoder.java [518:632]
110 lines of code
23 McCabe index (conditional complexity)

    public static Exception unmarshallException(Unmarshaller u,
                                                Object source,
                                                MessagePartInfo part) {
        XMLStreamReader reader;
        if (source instanceof XMLStreamReader) {
            reader = (XMLStreamReader)source;
        } else if (source instanceof Element) {
            reader = StaxUtils.createXMLStreamReader((Element)source);
            try {
                // advance into the node
                reader.nextTag();
            } catch (XMLStreamException e) {
                // ignore
            }
        } else {
            throw new Fault(new Message("UNKNOWN_SOURCE", LOG, source.getClass().getName()));
        }
        try {
            QName qn = part.getElementQName();
            if (!qn.equals(reader.getName())) {
                throw new Fault(new Message("ELEMENT_NAME_MISMATCH", LOG, qn, reader.getName()));
            }

            Class<?> cls = part.getTypeClass();
            Object obj;
            try {
                Constructor<?> cons = cls.getConstructor();
                obj = cons.newInstance();
            } catch (NoSuchMethodException nse) {
                Constructor<?> cons = cls.getConstructor(new Class[] {String.class});
                obj = cons.newInstance(new Object[1]);
            }

            XmlAccessType accessType = Utils.getXmlAccessType(cls);
            reader.nextTag();
            while (reader.getEventType() == XMLStreamConstants.START_ELEMENT) {
                QName q = reader.getName();
                String fieldName = q.getLocalPart();
                Field f = Utils.getField(cls, accessType, fieldName);
                if (f != null) {
                    Type type = f.getGenericType();
                    ReflectionUtil.setAccessible(f);
                    if (JAXBSchemaInitializer.isArray(type)) {
                        Class<?> compType = JAXBSchemaInitializer.getArrayComponentType(type);
                        List<Object> ret = unmarshallArray(u, reader, q, compType, createList(type));
                        Object o = ret;
                        if (!isList(type)) {
                            if (compType.isPrimitive()) {
                                o = java.lang.reflect.Array.newInstance(compType, ret.size());
                                for (int x = 0; x < ret.size(); x++) {
                                    Array.set(o, x, ret.get(x));
                                }
                            } else {
                                o = ret.toArray((Object[]) Array.newInstance(compType, ret.size()));
                            }
                        }

                        f.set(obj, o);
                    } else {
                        Object o = getElementValue(u.unmarshal(reader, Utils.getFieldType(f)));
                        Utils.setFieldValue(f, obj, o);
                    }
                } else {
                    String s = StringUtils.capitalize(q.getLocalPart());
                    Method m = Utils.getMethod(cls, accessType, "get" + s);
                    if (m == null) {
                        m = Utils.getMethod(cls, accessType, "is" + s);
                    }
                    Type type = m.getGenericReturnType();
                    Object o;
                    if (JAXBSchemaInitializer.isArray(type)) {
                        Class<?> compType = JAXBSchemaInitializer
                            .getArrayComponentType(type);
                        List<Object> ret = unmarshallArray(u, reader,
                                                           q,
                                                           compType,
                                                           createList(type));
                        o = ret;
                        if (!isList(type)) {
                            if (compType.isPrimitive()) {
                                o = java.lang.reflect.Array.newInstance(compType, ret.size());
                                for (int x = 0; x < ret.size(); x++) {
                                    Array.set(o, x, ret.get(x));
                                }
                            } else {
                                o = ret.toArray((Object[])Array.newInstance(compType, ret.size()));
                            }
                        }
                    } else {
                        o = getElementValue(u.unmarshal(reader, Utils.getMethodReturnType(m)));
                    }
                    Method m2 = Utils.getMethod(cls, accessType, "set" + s, m.getReturnType());
                    if (m2 != null) {
                        if (JAXBSchemaInitializer.isArray(type)) {
                            m2.invoke(obj, o);
                        } else {
                            Utils.setMethodValue(m, m2, obj, o);
                        }
                    } else {
                        Field fn = ReflectionUtil.getDeclaredField(cls, q.getLocalPart());
                        if (fn != null) {
                            ReflectionUtil.setAccessible(fn);
                            fn.set(obj, o);
                        }
                    }
                }
                if (reader.getEventType() == XMLStreamConstants.END_ELEMENT && q.equals(reader.getName())) {
                    reader.next();
                }
            }
            return (Exception)obj;
        } catch (Exception e) {
            throw new Fault(new Message("MARSHAL_ERROR", LOG, e.getMessage()), e);
        }
    }