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Hibernate version: Hibernate3 3.2.3.ga

Mapping documents:
<id name="id" type="long" column="Id">
<generator class="increment" />
</id>

Code between sessionFactory.openSession() and session.close():

Full stack trace of any exception that occurs:

Name and version of the database you are using:
DB2 version9.1

The generated SQL (show_sql=true):

Debug level Hibernate log excerpt:


Problem with an entity with primary key zero
Following is the description of the problem
I have an entity whose primary key is defined as
<id name="id" type="long" column="Id">
<generator class="increment" />
</id>
in its hbm mapping file

There is a row in the corresponding table for that entity in DB2 with id zero
I want to retrieve this entity with id zero, modify it and then update it in the database.
The retrieval works perfectly fine but update creates a new entity instead of updating the entity with id zero with the modification

Can any one tell me what is wrong.

Thanks in advance

Read this: http://hibernate.org/42.html

You are probably calling update() unnecessarily.
session.update() does not do what you think it does.
Please read this article

http://hibernar.org/articulos_en/persis ... ethods.php


where I explain this in detail