version: Hibernate 3
db: MySql
dialect: org.hibernate.dialect.MySQLDialect
table creation:
create table if not exists myTable
( pk integer(10) unsigned not null auto_increment primary key,
name char(35),
) TYPE=INNODB;

mapping:
<hibernate-mapping>
<class name="com.MyObject" table="myTable">
<id name="pk" column="pk" type="java.lang.Long">
<generator class="native"/>
</id>

In my Pojo class, my primary key is using a java.lang.Long. When I run a simple select with hibernate, the field pk in my pojo would contain a value like 4294967297 instead of 1. If I change the type back to int in my mapping it sets pk to 1 which is fine. However I would like to use a Long in my Pojo. Can you clarify why this is happening and what to do? Sorry if thats a stupid question, I am new to Hibernate. Thanks.

Actually I was wondering if that was the jdbc driver, the way it was converting datatype from the database to Java?

Hi,

Use <generator class="increment" />.

cool it worked. Thanks!
My understanding was that this 'increment' or 'native' attribute was only used when inserting a new row... obviously I was wrong!