public Map getSerializablePersistentFields()

in xstream/src/java/com/thoughtworks/xstream/core/util/SerializationMembers.java [211:246]

36 lines of code
12 McCabe index (conditional complexity)


    public Map<String, ObjectStreamField> getSerializablePersistentFields(final Class<?> type) {
        if (type == null) {
            return null;
        }
        Map<String, ObjectStreamField> result = fieldCache.get(type.getName());
        if (result == null) {
            ErrorWritingException ex = null;
            try {
                final Field field = type.getDeclaredField("serialPersistentFields");
                if ((field.getModifiers() & PERSISTENT_FIELDS_MODIFIER) == PERSISTENT_FIELDS_MODIFIER) {
                    field.setAccessible(true);
                    final ObjectStreamField[] fields = (ObjectStreamField[])field.get(null);
                    if (fields != null) {
                        result = new HashMap<>();
                        for (final ObjectStreamField f : fields) {
                            result.put(f.getName(), f);
                        }
                    }
                }
            } catch (final NoSuchFieldException e) {
            } catch (final IllegalAccessException e) {
                ex = new ObjectAccessException("Cannot get field", e);
            } catch (final ClassCastException e) {
                ex = new ConversionException("Incompatible field type", e);
            }
            if (ex != null) {
                ex.add("field", type.getName() + ".serialPersistentFields");
                throw ex;
            }
            if (result == null) {
                result = NO_FIELDS;
            }
            fieldCache.putIfAbsent(type.getName(), result);
        }
        return result == NO_FIELDS ? null : result;
    }