Programmatic schema generation with HibernateToolTask

mrosso10 · **Joined:** Thu Jan 26, 2012 8:00 pm **Posts:** 1

Hi, i'm new with Hibernate and i'm looking for a nice way to export my database schema (I used JPA Annotations). I've tried the HibernateToolTask with Ant, and it worked flawlessly. But now i'm wondering if there is a way to use this same tool but from Java code. I've been looking around but i didn't find much about this. Maybe there is another way to do this, or is something useless that only occurred to me and i have to do this from the command line with Ant.
I've tried also with SchemaExport and AnnotationConfiguration, but that way i have to manually put each annotated class.
Looking at the org.hibernate.tool.ant package classes i thought that something like this may work:

Code:

HibernateToolTask hibToolTask = new HibernateToolTask();
Hbm2DDLExporterTask schemaExportTask = (Hbm2DDLExporterTask)hibToolTask.createHbm2DDL();
schemaExportTask.setOutputFileName("schema.sql");
schemaExportTask.execute();

but i was too optimistic.

If someone could help me with this, i would appreciate that.

max · **Posted:** Fri Jan 27, 2012 7:21 am

Just created a hibernate configuration and would normally and use SchemaExport on it - that is what hibernate tools does anyway, but you don't have to depend on hibernate tools for it.

Dependent on the version of hibernate you can use Ejb3Configuration - but all depends what you want/version you are at to get "classpath" scanning.

You can also take a look at hibernate tools source code for HibernatetoolTask to see how we do it - it's pretty straightforward ;)

https://github.com/hibernate/hibernate- ... lTask.java