Hi, I am using hibernate 3 and trying to retrieve records form contact table and it has first, last name,phno, contactid is key. i have contact.hbm.xml file with all these mappings. i am able to retrive all records using this hbm file. when I want to insert a record in by using the same hbm file (key is auto genrated by db) I am getting sql error exception.
So i have created a different bean with out contact id and genrated hbm file with out contact id. then I tried to insert a record , it's going through.
My question is it right way, if it's right way then why do we need hibernate? or please let me know if there is altenative for this.
Thanks,
reddy.

Please respond me ..

You'll probably have better luck if you post your mapping file for the contact table. You shouldn't need two mapping files. If the table has a generated identity column, you will need to specify that in the mapping.

Look here: http://docs.jboss.org/hibernate/core/3. ... aration-id

Specifically, look at section 5.1.2.2. (Identifier generator)

What you're probably missing is this:

<generator class="identity" />