You need to read the Hibernate documentation to find out how to construct various queries. But a key point here is that Hibernate (or JPA) is an “Object Relational Mapping” framework. That means you work with Java objects not database columns in your application.

Selecting a single column from a database table is doable in Hibernate (run native queries) but it is not recommended since it exposes the details of your relational model into the abstract object layer.

cheers
Michael

I have read your article and your book “JBOSS SEAM”. I am trying to get started writing the first class. But I have a naïve question. In the ManagerAction.java for the Hello example project, you have the following code:

fans = em.createQuery(”select p from Person p”) .getResultList();

if I want to select a particular column, say name, how can I do that? I have tried p.name. It does not give any return results, no errors. If I use p.NAME, then get errors.

Can you help on this?

Thanks.

Everett

I would like to ask you about chapter 12 (Developing Scalable Applciations). I found Antenna as a flexible tool for building application to various devices, and I want to continue using it. Would you suggest today to try other tools that were not known at that time (when the book was published)?
Thanks in advance,
David

Sorry my bad. There is no ready tool to generate a complete CRUD app. What we have are:

1. The Seam Gen tool that generates a complete project template with all configuration files and IDE / Ant integration.

2. A CRUD application framework that allows you to declaratively write the data access object. This way you can write a simple app with no Java code.

cheers
Michael

I’ve already purchased the rough-cut and I look forward to the hard copy.
I was wondering if you could give a hint on which Seam tools will help automatically create CRUD from the database that are mentioned in Chapter 12?

Yes, the book will be fully updated to incorporate Seam 1.1 features. That is why there is so much delay in publication!

I am not sure what is the problem with roughcut. It certainly sounds bad. Maybe I should start to take paypal payments on my own web site.

cheers
Michael