@Basic()
    @Column(name = "mutdatime")
    @Version
    private Timestamp changedOn = null;

2013-10-09 11:05:58:528 + 02:00

    @Override
    public Object convertObject(Object sourceObject, Class javaClass)
            throws ConversionException {
        if (sourceObject instanceof String && javaClass.equals(Timestamp.class)) {
            // do our own conversion
        }

        return super.convertObject(sourceObject, javaClass);
    }


    @Override
    public Object convertToDatabaseType(Object value) {
        if (value instanceof Timestamp) {
            // do our own conversion
        }
        return super.convertToDatabaseType(value);
    }

    @Override
    public void setParameterValueInDatabaseCall(Object parameter,
            PreparedStatement statement, int index, AbstractSession session)
            throws SQLException {
        if (parameter instanceof Timestamp) {
            String converted = (String) convertToDatabaseType(parameter);
            statement.setString(index, converted);
            return;
        }

        super.setParameterValueInDatabaseCall(parameter, statement, index,
                session);
    }