Hi everybody,

I beginning to use hibernate and i have some question if somebody can help me i am very happy ! :)

I have start to create my mapping xml file .hbm described my tables on my database oracle described in hibernate.properties. I starting all described in hibernate.cfg.xml by an classe java who contained :

public static void main(String[] args) throws HibernateException, net.sf.hibernate.HibernateException, InstantiationException, IllegalAccessException, SQLException {

session = (Session) HibernateUtil.currentSession();
tx= (Transaction) session.beginTransaction();

That's is very good , it's create all the table in database oracle described in file hbm BUT the problem is when i insert a element in base and i restart application hibernate, my tables are recreated and reinitialized. why ?

And second question, how can I check that the property which I want to insert in my table does not exist? by request ?


thank you in advance, Cordially,

cyril.


Hibernate version: 3.0

Name and version of the database you are using: oracle

1) Whats in your hibernate.properties file ? Please paste is here.

I think there is an option to create tables on startup, maybe you enabled it thinking it would only do it the first time it runs, not every time it runs.

something like "autoddlgen" or something...



2) The property ? You insert rows into tables, these rows are usualy based on objects, its common for one row to be one object. Maybe you can explain what you mean better ?

You can lookup an object with:

Session.get(MyObject.class, new Integer(1))

to get the instance number 1 of the primary key / id.

Yes cool it's that hbm2ddl create i have comment it ! it's good thks u ! how i give u an credit ?

#hibernate.hbm2ddl.auto create
hibernate.hbm2ddl.auto update

And for the property i have an table AC and there are an param name = axis , and i want to know if in my table AC i have already an axis in param name .

thks u again,

If thats the 2nd problem, please re-phrase that so I can understand better.