Is it Best way to use HibernateCompositeUser type for handling localized contents

Question

I am trying to use HibernateCompositeUser type to handle i18n specific data in my application. i am trying to use the below approach.

I have a table named master table which contains all locale independent data while i have created another table master_translation which contains all locale sensitive information. Master table contains a reference to the master_translation.here is the detailed table structure

master
 ---ID
 ---master_translation
 ---Other locale independent fields.

master_translation
 ---ID
 ---language_id
 ---Other locale sensitive fields

now i am using HibernateCompositeUser type to handle this internal process. here is the mapping for master class.

<hibernate-mapping>
    <class name="Master"
        table="MASTER">
        <id name="uuid" type="java.lang.String">
            <column name="UUID" />
            <generator class="uuid" />
        </id>

        <property name="master_i18n" type="masteri18n">
           <column name="NAME"/>
           <column name="SHORTDESCRIPTION"/>
           <column name="LONGDESCRIPTION"/>
    </class>
</hibernate-mapping>

where type="masteri18n" is hibernate CompositeUserType.now when i am fetching the master content it is correctly fetching the data based on the language and my Master class contain a reference to the Master_translation which holding locale specific data

i am handling this case

public Object nullSafeGet(ResultSet rs, String[] arg1,
            SessionImplementor arg2, Object arg3) throws HibernateException,
            SQLException {

        Master_i18n master_i18n=Master_i18n.getInstance();
        master_i18n=dao.getMaster_i18n(rs.getString(arg1[0]), "nl_NL");;

        //return Master_i18n.getName();
        return Master_i18n;
    }

    @Override
    public void nullSafeSet(PreparedStatement ps, Object arg1, int index,
            SessionImplementor arg3) throws HibernateException, SQLException {

        if(arg1==null){
            ps.setNull(index, Hibernate.STRING.sqlType());
            //ps.setNull(index+1, Hibernate.STRING.sqlType());
            //ps.setNull(index+2, Hibernate.STRING.sqlType());set
        }
        else{
             Master_i18n des=(Master_i18n)arg1;
             des=dao.saveMaster_i18n(des);
             ps.setString(index, des.getUuid());
             ps.setString(index+1, des.getUuid());
             ps.setString(index+2, des.getUuid());
             ps.setString(index+3, des.getUuid());

        }
    }

Somehow i am not sure not feeling confident about my approach.my query is if i am implementing it in right way or not?