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Automatically creation of tables from mapping files

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ismar

Post subject: Automatically creation of tables from mapping files

Posted: Thu Oct 19, 2006 11:20 am

Newbie

Joined: Thu Jun 08, 2006 4:08 am
Posts: 8

Hi!

Im using NHibernate 1.0 and want to ask if its possible to automatically create tables from the hbm.xml mapping files when running the application for the first time ( or if the tables are not present at runtime ). I know that this is possible with Hibernate, but i get exception with NHibernate if I try to persist something and tables doesn't exists.

Regards
Ismar

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Kernel Panic

Post subject:

Posted: Thu Oct 19, 2006 1:09 pm

Newbie

Joined: Wed Sep 06, 2006 8:33 am
Posts: 19

Hi, use this code before you call BuildSessionFactory():

Code:

SchemaExport meta = new SchemaExport(cfg);
meta.SetDelimiter(";");
meta.SetOutputFile("C:/schema.sql");
meta.Execute(true, false, false, false);

note: cfg is your Configuration cfg = new Configuration();

This code create a c:\schema.sql to create your database.

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ismar

Post subject:

Posted: Thu Oct 19, 2006 1:20 pm

Newbie

Joined: Thu Jun 08, 2006 4:08 am
Posts: 8

Tnx!
It worked to generate sql script for tables, but is it possible that generating and executing of this file can be done in the background. Its possible with ant or maven, but with just using NHibernate?

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jstelly

Post subject:

Posted: Thu Oct 19, 2006 4:40 pm

Beginner

Joined: Fri Jul 22, 2005 4:08 pm
Posts: 28

Code:

SchemaExport se = new SchemaExport(Configuration);
se.Create(false, true);

First parameter to Create() is to dump the creation script to a file, second is to execute it directly (I believe?)

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