T5 ValueEncoder Override.java

  public static void contributeValueEncoderSource(
      MappedConfiguration<Class, ValueEncoderFactory> configuration,
      final Session session)

  {
    ValueEncoder<Posting> postingValueEncoder = new ValueEncoder<Posting>()
    {

      @Override
      public String toClient(Posting value)
      {
        return String.format("%s:%s", value.getBlog().getName(), value
            .getExternalId());
      }

      @Override
      public Posting toValue(String clientValue)
      {
        int colon = clientValue.indexOf(':');
        String blogName = clientValue.substring(0, colon);
        String externalId = clientValue.substring(colon + 1);

        Query query = session
            .createQuery("from Posting where blog.name = :blogName and externalId = :externalId");

        query.setString("blogName", blogName).setString("externalId",
            externalId);

        return (Posting) query.uniqueResult();
      }
    };

    configuration.override(Posting.class, GenericValueEncoderFactory.create(postingValueEncoder));
  }