Hibernate Tools : how to generate base classes?

Question

I recently installed Eclipse Helios and Hibernate Tools 3.4.0.Beta1.

I've been trying to generate "base class" from mapping files but can't find out how to do. Let us say I have a mapping file called Individual.hbm.xml. I want Hibernate Tools to generate 2 POJOs : - a BaseIndividual.java that would contain constructors and getters/setters - an Individual.java where I could add "custom" code that would not be removed whenever I re-generate POJOs

I spent a lot of time seeking information but never found a practical answer. If anyone can help... thanks in advance

score 1 · Answer 1 · answered May 27 '12 at 16:24

I have just come across your question while trying to do the same thing myself (I think).

What I have done is set the following in my hbm.xml config file:

<class
    name="User"
    table="USERS">
    <meta attribute="generated-class">ocs.authentication.UserBase</meta>
    <id
        name="user_id"
        column="USER_ID"
        type="integer">
        <generator class="increment"/>
    </id>
    <property
        name="username"
        column="USERNAME"
        type="string" />
</class>

Note the <meta attribute="generated-class"> section. This will cause the generated class to be called UserBase (in this case). You can then create another class (called User for example) that will extend this base class:

public class User extends UserBase {

    public User() {
    }

    public void SomeFunction() {
    ...
    }

}

This seems to be working for me. I hope this is useful for you, or for others wanting to do a similar thing.

score 0 · Answer 2 · answered Sep 02 '11 at 08:21

I'm looking for a way to do it as well. What I'm doing right now, is to:

to save my custom class "Individual.java" to another package without updating the reference.
generate all my pojo (with the name of the table, ie Individual)
rename them tablename+"Base" (ie IndividualBase) without updating the references)
then moving my custom class (Individual) which extends the pojo from the other package.

Did you find out an automatic way to do it by for example:

Using a custom template
Writing you own ant task
Configure hibernate.reveng.xml

I agree that Hibernate Synchronizer was doing it quite well!

Hibernate Tools : how to generate base classes?

2 Answers2