NEWBIE: Seam-Project using DAOs instead of org.jboss.seam.framework.Query?

[mean.meanmachine.gmx.at]

Hello,

I'm a student and I'm quiet new in working with seam. Before I started the webproject for my studies, I created a database (Postgres), entities (with NamedQueries), a middle-tier(?) and some DAO (Hibernate) classes with which I fill my entities.

Now I created a new seam project, using the official seam introduction, and build the entities, etc. by using my existing database.

After the project was built and worked so far, I copied the entities I've built in the first step over the generated one and now, I want to use my DAOs instead of the org.jboss.seam.framework.jar, that fetches the SQL-statements out of the xyzList-classes (e.g. AdresseList) by calling the method getEjbql().

Hopefully you understood, what I mean and you can help me.

I would be very happy if you could help me - of course, I also could upload my project, so that you can see its structure, etc.

Please answer in a simple way, because my english is not the best and I'm a newbie in Java/Seam.

Thanks and best regards,

Dirk

[jeffreyhsu]

this is seam application framework.

you can get detail information in Chapter 13. The Seam Application Framework of the reference.

[mean.meanmachine.gmx.at]

Hi Jeffrey,

thanks for your fast reply! I've already read this chapter of the seam framework.

But the way they describe it is not the way I would like to go. I wanted to use a structure like that:

- de.autohaus.benutzerverwaltung
     Benutzerverwaltung.java  <- interface
     BenutzerverwaltungImpl.java implements the interface (= application tier that calls the methods from the DAO-Classes).
- de.autohaus.benutzerverwaltung.db
     BenutzerverwaltungDAO.java <- interface
     BenutzerverwaltungDAOImpl.java <- implements the interface and accessing the database (including functions like "findAllUsers(){..} findAllUsersByName() {..} findAdressesByCode() {..}...") as you can see all functions concerning the users/customers
     Customer (=Entities)
     Address
     BankAccount
     ...

- de.autohaus.fahrzeugverwaltung (the same as above for the vehicles)
    Fahrzeugverwaltung.java
    FahrzeugverwaltungImpl.java
- de.autohaus.fahrzeuverwaltung.db
    FahrzeuverwaltungDAO.java
    FahrzeuverwaltungDAOImpl.java
    Entities

- de.autohaus.bestellverwaltung (the same for the ordering)
    Bestellverwaltung.java
    BestellverwaltungImpl.java
- de.autohaus.bestellverwaltung.db
    BestellverwaltungDAO.java
    BestellverwaltungDAOImpl.java
    Entities

That's the way I would like to solve it (with namedQueries in the entities), but the only way I found it is to write a XYZHome-Class and make a getter that returns a query. But this is not a 3-Tier Architecture (hopefully this is the right word in english) in my mind?!?!

Hopefully someone can help me doing it the way I described above.

Thanks and best regards,

Dirk

[nickarls]

Dear mr. Machine (or may I call you Mean)?

I recommend you read the few first chapters of the manual, too.

Good luck with your homework.

Sorry. Couldn't help myself. I did try. Honest.