Duvida Mapear Enum com Hibernate

public interface StringValuedEnum {    
    
    /**
     * Current string value stored in the enum.
     * @return string value.
     */
    public String getValue();
    
}

public class StringValuedEnumReflect {
    
    /**
     * Don't let anyone instantiate this class.
     * @throws UnsupportedOperationException Always.
     */
    private StringValuedEnumReflect() {
        throw new UnsupportedOperationException("This class must not be instanciated.");
    }
    
    /**
     * All Enum constants (instances) declared in the specified class. 
     * @param enumClass Class to reflect
     * @return Array of all declared EnumConstants (instances).
     */
    private static <T extends Enum<T>> T[] 
            getValues(Class<T> enumClass){
        return enumClass.getEnumConstants();
    }
    
    /**
     * All possible string values of the string valued enum.
     * @param enumClass Class to reflect.
     * @return Available string values.
     */
    public static <T extends Enum<T> & StringValuedEnum> String[] 
            getStringValues(Class<T> enumClass){ 
        T[] values = getValues(enumClass);
        String[] result = new String[values.length];
        for (int i=0; i<values.length; i++){
            result[i] = values[i].getValue();
        }
        return result;
    }
    
    /**
     * Name of the enum instance which hold the especified string value.
     * If value has duplicate enum instances than returns the first occurency.
     * @param enumClass Class to inspect.
     * @param value String.
     * @return name of the enum instance.
     */
    public static <T extends Enum<T> & StringValuedEnum> String 
            getNameFromValue(Class<T> enumClass, String value){
        T[] values = getValues(enumClass);
        for (T v : values){
            if (v.getValue().equals(value)){
                return v.name();
            }
        }
        return "";
    }
    
}

public class StringValuedEnumType <T extends Enum<T> & StringValuedEnum> 
        implements EnhancedUserType, ParameterizedType{
    
    /**
     * Enum class for this particular user type.
     */
    private Class<T> enumClass;
 
    /**
     * Value to use if null.
     */
    private String defaultValue;
    
    /** Creates a new instance of ActiveStateEnumType */
    public StringValuedEnumType() {
    }
    
    public void setParameterValues(Properties parameters) {
        String enumClassName = parameters.getProperty("enum");
        try {
            enumClass = (Class<T>) Class.forName(enumClassName).asSubclass(Enum.class).
                    asSubclass(StringValuedEnum.class); //Validates the class but does not eliminate the cast
        } catch (ClassNotFoundException cnfe) {
            throw new HibernateException("Enum class not found", cnfe);
        }
 
        setDefaultValue(parameters.getProperty("defaultValue"));
    }
 
    public String getDefaultValue() {
        return defaultValue;
    }
    
    public void setDefaultValue(String defaultValue) {
        this.defaultValue = defaultValue;
    }
    
    /**
     * The class returned by <tt>nullSafeGet()</tt>.
     * @return Class
     */
    public Class returnedClass() {
        return enumClass;
    }
 
    public int[] sqlTypes() {
        return new int[] { Types.VARCHAR };
    }
    
    public boolean isMutable() {
        return false;
    }
 
    /**
     * Retrieve an instance of the mapped class from a JDBC resultset. Implementors
     * should handle possibility of null values.
     *
     * @param rs a JDBC result set
     * @param names the column names
     * @param owner the containing entity
     * @return Object
     * @throws HibernateException
     * @throws SQLException
     */
    public Object nullSafeGet(ResultSet rs, String[] names, Object owner)
            throws HibernateException, SQLException {
        String value = rs.getString( names[0] );
        if (value==null) {
            value = getDefaultValue();
            if (value==null){ //no default value
                return null;
            } 
        }
        String name = getNameFromValue(enumClass, value);
        Object res = rs.wasNull() ? null : Enum.valueOf(enumClass, name);
        
        return res;
    }
 
    /**
     * Write an instance of the mapped class to a prepared statement. Implementors
     * should handle possibility of null values. A multi-column type should be written
     * to parameters starting from <tt>index</tt>.
     *
     * @param st a JDBC prepared statement
     * @param value the object to write
     * @param index statement parameter index
     * @throws HibernateException
     * @throws SQLException
     */   
    public void nullSafeSet(PreparedStatement st, Object value, int index)
    throws HibernateException, SQLException {
        if (value==null) {
            st.setNull(index, Types.VARCHAR);
        } else {
            st.setString( index, ((T) value).getValue() );
        }
    }
    
    public Object assemble(Serializable cached, Object owner)
            throws HibernateException {
        return cached;
    }
    
    public Serializable disassemble(Object value) throws HibernateException {
        return (Enum) value;
    }
        
    public Object deepCopy(Object value) throws HibernateException {
        return value;
    }
 
    public boolean equals(Object x, Object y) throws HibernateException {
        return x==y;
    }
    
    public int hashCode(Object x) throws HibernateException {
        return x.hashCode();
    }
 
    public Object replace(Object original, Object target, Object owner)
            throws HibernateException {
        return original;
    }
 
    public String objectToSQLString(Object value) {
        return '\'' + ((T) value).getValue() + '\'';
    }
    
    public String toXMLString(Object value) {
        return ((T) value).getValue();
    }
 
    public Object fromXMLString(String xmlValue) {
        String name = getNameFromValue(enumClass, xmlValue);
        return Enum.valueOf(enumClass, name);
    }
        
}

public enum Status implements StringValuedEnum{
    

    Ativo("A"),
    
    Inativo("I");
 
    private final String status;
    
    ActiveState(final String status){
        this.status = status;
    }
 
    public String getValue() {
        return this.status;
    }
    
}

@Enumerated(EnumType.STRING)
	@Column(name = "IDN_STATUS", columnDefinition = "char(1)")
	private Status status;