identity « Composite « JPA Q&A





1. identity problem with composite id    forum.hibernate.org

Hi, I have a table that has columns A,B and C. A and B composes primary key together. And hbm.xml looks like ; And my problem is column A should be auto generated and column ...

2. MS-SQL 05 Auto-Increment Identity in composite key issue    forum.hibernate.org

Author Message aluink Post subject: MS-SQL 05 Auto-Increment Identity in composite key issue Posted: Wed May 26, 2010 10:12 am Newbie Joined: Wed May 26, 2010 9:52 am Posts: 1 I've got a table with a composite key within which is an auto-increment value. I am unable to get hibernate to insert new records into the table. I will ...

3. Creating a composite secondary identity column    forum.hibernate.org

Hi, I want to create unique Bill ids that match a certain mask (in my case %year%%countryCode%%sequence%). So in addition to the default database generated id, I want to fill the billNumber column with the value 2010de00002. 00002 in this case is determined by taking the last billNumber in the database and incrementing by one. I'm wondering what is the best ...

4. composite primary key with identity column and foreign key    forum.hibernate.org

I need to map a table (AddressTable below) that uses an identity column and an integer column as the composit primary key. The integer column is a foreign key. Is there an example of how to map this? ClientTable CLIENT_KEY INTEGER IDENTITY AddressTable CLIENT_KEY INTEGER NOT NULL ADDRESS_KEY INTEGER IDENTITY This is what the tool generated but ...

5. composite foreign identity    forum.hibernate.org

I need to have a object whose identity is defined by the composite of the keys for 4 child objects. These child objects will not have a foreign key relationship with the parent, but will be defined at query time by a join. So the object Roster, is queried by a timeStamp, and the child objects, Student, Teacher, School, Class, will ...