Hibernate question hbm2ddl.auto possible values and what they do

Posted by Suzan on Stack Overflow See other posts from Stack Overflow or by Suzan
Published on 2009-01-13T06:40:48Z Indexed on 2010/06/05 16:02 UTC
Read the original article Hit count: 272

Filed under:

hibernate

|

hbm2ddl

I really want to know more about the update, export and the values that could be given to hbm2ddl.auto.
I need to know when to use the update and when not? And what is the alternative?

These are changes that could happen over DB:

New tables
new columns in old tables
columns deleted
data type of a column changed
a type of a column changed it attributes
tables have been dropped
values of a column has changed

In each case what is the best solution?

© Stack Overflow or respective owner

Related posts about hibernate

Hibernate unable to instantiate default tuplizer - cannot find getter

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to use Hibernate to persist a class that looks like this: public class Item implements Serializable, Comparable<Item> { // Item id private Integer id; // Description of item in inventory private String description; // Number of items described by this inventory item private int… >>> More
Hibernate + PostgreSQL : relation does not exist - SQL Error: 0, SQLState: 42P01

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am having some problems trying to work with PostgreSQL and Hibernate, more specifically, the issue mentioned in the title. I've been searching the net for a few hours now but none of the found solutions worked for me. I am using Eclipse Java EE IDE for Web Developers. Build id: 20090920-1017… >>> More
Problem connecting to Hsqldb via Hibernate when running a Eclipse GWT project.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm trying to run a simple GWT project where I'm trying to do a simple persitence via hibernate to a HSQLDB database. The database I'm using I have been using for at least 2 years with several osgi applications without any problems. So all I done is reused the same configuration and added a simple… >>> More
Hibernate : load and

as seen on Stack Overflow - Search for 'Stack Overflow'
According to the tutorial : http://jpa.ezhibernate.com/Javacode/learn.jsp?tutorial=27hibernateloadvshibernateget, If you initialize a JavaBean instance with a load method call, you can only access the properties of that JavaBean, for the first time, within the transactional context in which it… >>> More
Hibernate Exception, what wrong ? [[Exception in thread "main" org.hibernate.InvalidMappingException

as seen on Stack Overflow - Search for 'Stack Overflow'
I use netbean 6.7.1 to write "hello world" witch hibernate, but I get some errors, plz help me, thank you very much. my exception init: deps-module-jar: deps-ear-jar: deps-jar: Copying 1 file to F:\Documents and Settings\My Dropbox\DropboxNetBeanProjects\loginspring\build\web\WEB-INF\classes compile-single: run-main: Oct… >>> More

Related posts about hbm2ddl

How to output two ddl files at the same time with using maven hbm2ddl plugin

as seen on Stack Overflow - Search for 'Stack Overflow'
Our application needs to use two different kinds of databases.One is oracle, the other is mysql and we want to use maven plugin hbm2ddl to generate the ddl file, and want to output the two ddl files at the same time, I don't know how to set the configuration in pom.xml. I tried to use this plugin… >>> More
hibernate3-maven-plugin: entiries in different maven projects, hbm2ddl fails

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to put an entity in a different maven project. In the current project I have: @Entity public class User { ... private FacebookUser facebookUser; ... public FacebookUser getFacebookUser() { return facebookUser; } ... public void setFacebookUser(FacebookUser facebookUser) { this… >>> More
Hibernate question hbm2ddl.auto possible values and what they do

as seen on Stack Overflow - Search for 'Stack Overflow'
I really want to know more about the update, export and the values that could be given to hbm2ddl.auto. I need to know when to use the update and when not? And what is the alternative? These are changes that could happen over DB: New tables new columns in old tables columns deleted data type of… >>> More
Hibernate - hibernate.hbm2ddl.auto = validate

as seen on Stack Overflow - Search for 'Stack Overflow'
I am interested in how hibernate.hbm2ddl.auto=validate actually works and I am struggling to find comprehensive documentation. We've recently discovered production system was affected by http://opensource.atlassian.com/projects/hibernate/browse/HHH-3532 (Hibernate matches foreign keys on name, rather… >>> More
When doing a Schema Export with hbm2ddl, is there a way to specify that you DO NOT want Nullable For

as seen on Stack Overflow - Search for 'Stack Overflow'
The DDL that is being created is putting all of my many to many associations into 1 table, but I actually want each many to many association in its' own table (for other reasons) Right now hbm2ddl is creating this table (only Table1Key OR Table2Key OR Table3Key should be filled out for any given… >>> More