null « Association « JPA Q&A

1. Hibernate :One-to-one association must return null instead of proxy (or actual object bytes.com

P: 15 CatchSandeepVaid I have posted this question in hibernate forums also.. As this forum is related to java, i am posting it here also ... In hibernate, presently one-to-one associations ...

2. many-to-one with null association forum.hibernate.org

I have a many-to-one association which can also be nullable. [code] [/code] Wheneven my hibernate query (below) tries to retrieve the records it works for a employee record which has secondworklocation but fails to return any data when there is no second work location. [code] List results = null; DetachedCriteria ...

3. one-to-one association - how to set NULL on delete? forum.hibernate.org

You have two issues. 1) The domain model and 2) The database. You kill the association by removing it by setting the property to null. You are then free to delete the object (as it exists but is not involved in a relationship). Hibernate will not clear the store as apart of garbage collection process. I tend to think of the ...

4. HQL for NULL associations forum.hibernate.org

Using Hibernate 2.1.4. Sorry if this has been posted before, but I did several searches and could not quite come up with what I needed. I have a object with a recursive structure. The object has a parent-child association to itself expressed as (0..1 --> 0..*). Now, I want to retrieve the top level objects in this structure by selecting all ...

5. many-to-one associations with not-null="false" att forum.hibernate.org

I work on a Oracle 9.2 database. It accept the null value , because when I test it with a DBUnit, this work fine. Here is my mapping Quote: ...

6. Foreign key value returns null in many-to-one association forum.hibernate.org

Newbie Joined: Mon Aug 08, 2005 8:29 pm Posts: 10 Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Jobs and Jobpackage are associated with many-to-one relation. Many jobs can be present in one JobPackage. Hibernate version: 2.1.8 Mapping documents:

7. Primary Key Foreign Key Association(Foreign Key null) forum.hibernate.org

Hi, I am developing a workflow management system using jboss-jbpm. I am using mysql as database, and using hibernate for OR mapping. Problem: I got a parent table(Name:User_Table) and a child table(Name:Member_Table) There is a primary key foreign key association with User_Table and Member_Table. The primary key field in User_Table is an autoincriment field. Two Value Objects(VO) are there for each ...

8. key id is NULL when creating a one-to-one association end forum.hibernate.org

Author Message spulci Post subject: key id is NULL when creating a one-to-one association end Posted: Thu Feb 07, 2008 5:25 am Newbie Joined: Thu Feb 07, 2008 3:56 am Posts: 1 Hallo, I'm experiencing this kind of problem on the scenario described below. I've got a relational table with two one-to-one associations. I try to create new records ...