Hi guyz,


Is there any way to change hbm file at runtime in hibernate .

If so please do post me the reply with demo code sample.

Thank you!!!

It depends on what you mean with "at runtime". Once the SessionFactory has been built, you can't make any configuration changes to it. You'll need to create a new SessionFactory from scratch. This can take quite a long time and is nothing that should be done at regular basis.

In our project, we are doing some "dynamic" changes at application startup. We have a "template" hbm.xml file which we read in as a XML Document and set the values for <class entity-name="..." table="..."> (and a few others). Those values are kept in a separate configuration file. When the application has started we don't change this so it is a one-time event only.

How do you exactly do this ?. Can you post an example please.

Basically I have a custom id generator and Iset pool size of ids as following :

<generator class="com.x.y.z.CutomIdGenerator">
<param name="segment_value">SomeValue</param>
<param name="optimizer">pooled</param>
<param name="increment_size">50</param>
</generator>

I want to change increment_size value from 50 to say 10 for some other deployment without disturbing the hbm files. This I want to do using property file which will be outside the jar file (jar file will have hbms and will be same for all customers)

Long time ago this one... I'll post a few links to our code:

First, the actual code that takes a Hibernate Configuration object and programmatically adds a new entity to it.
http://base.thep.lu.se/browser/tags/2.1 ... .java#L298

Then, the template file, which is more or less a regular hbm.xml file:
http://base.thep.lu.se/browser/tags/2.1 ... awData.xml