Extra column « Column « JPA Q&A





1. JPA many to many with extra column    stackoverflow.com

I have a following problem that I need to solve. The core issues is that I want to add additional column into JoinTable for ManyToMany relation in JPA. In my case I ...

2. Add an extra column on a intermediate table    stackoverflow.com

I have seen a lot of threads very similar to this one, but neither of them could help me I have two entities: triple and concept. A triple will contain 3 concepts, ...

3. [New]Problem: Many-to-Many with extra columns, with a twist.    forum.hibernate.org

So, this is probably a very common question, except for the twist. I need to map a many-to-many association between 2 objects(let's call em Person, Address), and have extra columns on the new table. I read about how to do it, you have to create a new POJO(PersonAddress) for the new table, give it its own ID, the columns you want, ...

4. many-to-many with extra columns in join table    forum.hibernate.org

Regular Joined: Tue Aug 26, 2003 7:53 pm Posts: 66 Location: Lakeland, Florida USA [yes, I'm still working on this.] 1) Mapping a many-to-many with Set & composite-element as specified in sec 6.2. See hbm below. 2) In order to implement equals & .hashcode in the the composite-element class (AdAUserRoleXref), don't I have to use the parent element tag within the ...

5. why is this extra column being created?    forum.hibernate.org

this is a really wierd problem, using the latest stable hibernate, heres my mapping.. why is a column definitionGroupid created? I stripped down the mapping to its bare minimum and also have the bi-directional config there but thats commented out ...

6. how to restrict hibernate not to add extra column in db.    forum.hibernate.org

problem: iam unsing postgresql database. i have two tables one is class_definition with having column named class_id_pk which is primary key, and there is another table state_classes with column class_id_fk having the foreign key reference of class_id_pk. when i load session factory, it creates the extra empty column with name class_id_pk in state_classes table.in postgresql database.. i dont want this to ...

7. How complete extra columns?    forum.hibernate.org

Hi, I have a question. I have a class 'X' and I want to it persist in table 'Y', but table 'Y' have a extra column that must have certain value. What do write in xml file? Class 'X' Table 'Y' private int a; -> column a; private int b; -> column b; column c; How indicate that this column must ...

8. Extra column on join table    forum.hibernate.org

Let's say I've got tables People and Meals. I could join them with table PeopleMeals, that shows what meals people like to eat. A standard many-to-many mapping would work great. But now, pretend I want to keep track of a person's favorite meal. I could add a column to PeopleMeals called IsFavorite. Is there a way to access this extra column ...