Eclipse Community Forums: EclipseLink » Using Extensions for Schema Generation

Help

Home

Home » Eclipse Projects » EclipseLink » Using Extensions for Schema Generation

Show: Today's Messages :: Show Polls :: Message Navigator

Using Extensions for Schema Generation [message #643054]

Fri, 03 December 2010 18:39

Tilen Bobek

Messages: 2
Registered: December 2010

Junior Member

Hello everyone!

In our project we want the tables in the database get generated/altered automaticaly when some entity changes and also get the SQL queries that did that. I read the tutorial for the EclipseLink JPA and found how to configure the persistence unit in persistence.xml to generate the database schema automaticaly (property "eclipselink.ddl-generation.output-mode" for schema generation and property "eclipselink.ddl-generation.output-mode" for generation of SQL scripts).

Is it possible to configure the persistence unit so that if only a field in the entity changes the whole table (or even database) is not getting dropped and recreated but the table get only altered for the changes (for example adding/deleting a column, modifying a relation)?

Thanks in advance.

Regards

Report message to a moderator

Re: Using Extensions for Schema Generation [message #643359 is a reply to message #643054]

Mon, 06 December 2010 15:53

James Sutherland

Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

Altering an existing schema is not currently supported. You need to either replace the schema, or generate a script and change it yourself to use alter.

Please log an enhancement request for this.

James : Wiki : Book : Blog : Twitter

Report message to a moderator

Previous Topic:	Getting Double instead of BigDecimal when using EntityManager#createNativeQuery()
Next Topic:	JAXBContextFactory Not Found

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 18 01:31:59 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter