ternary « Association « JPA Q&A





1. Ternary association    forum.hibernate.org

Hi, guys, I have users that have roles (n:m). One of the roles is default role, this default "flag" I have placed in association table, so that I can define different role as default role for different users. I have mapping like this: ... ...

2. another ternary association question    forum.hibernate.org

I know how to map what you're describing. My case differs slightly thought - I want each User/Resource pair to map to a Set of Permissions, not a single one. Yeah, I could play bitmask games to encode a set of permissions as an integer if the complete set of permissions were known a priori, but that might not in fact ...

3. Ternary association    forum.hibernate.org

tb_Person idPerson numeric(10) not null //Pk dsPerson varchar2(30) .... tb_Groups idGroup numeric(10) not null /Pk dsGroup varchar2(3) ... and I need a relation table between tb_Person and tb_Groups : tb_PersonGroup ...

4. union of ternary and quaternary associations?    forum.hibernate.org

Newbie Joined: Wed Nov 12, 2003 1:08 pm Posts: 1 I have four classes that form the core of a calendaring application. These are a Calendar, a Reservation, an Event, and an Occurrence. A Calendar relates to a set of Events and Occurrences through a set of Reservation objects. In addition, each Event has one or more Occurrences. Reservation is an ...

5. How to use ternary associations codewise?    forum.hibernate.org

Hi all! First: thanks for a great product! Second: Hav e been reading the topics concerning the ternary association, and I also managed to get a mapping via XDoclet after a couple of hours trial-and-error. The problem is that I don't really get the idea by ternary associations usage-wise. I mean, what kind of code etc. should you use on an ...

6. NonUniqueException and ternary association    forum.hibernate.org

Hi! Class InfoContact has the following mapping. . . . . . I would want the InfoContact-object ...

7. ternary association and sublist    forum.hibernate.org

8. Ternary Associations are baffling me!    forum.hibernate.org

Newbie Joined: Sun Apr 04, 2004 1:58 am Posts: 13 Location: Melbourne, Australia I have a simple ternary association I would like to persist and query involving 3 persitable objects - Image, Author and Contribution. I also have a type to represent an association, my AuthorContribution type. I don't really care if I use a Set, Map, composite-element or anything else ...

9. Many-to-many and ternary association best practice?    forum.hibernate.org

I'm a Hibernate newbie, so I apologize in advance if my questions sound stupid :-). I really want to get a good handle on the best approach with respect to database performance, i.e., never retrieve more records that I need, and always try to make the fewest database calls. As we all know, in the relational model, a many-to-many or ternary ...





10. Ternary Associations    forum.hibernate.org

Query query = session.createQuery("from " + Theater.class.getName() + " venue where theater.address.postcode like :zip " + " order by theater.address.postcode, " ...

11. Association classes confusion with ternary associations    forum.hibernate.org

This is a generic question for both Hibernate 2.x and 3.x versions. Im a little new to hibernate and am trying to find out the posible ways i can map association classes to POJOs. Following is a detailed example and question. Sorry for the long message, but im trying to give as much info as possible. Relational Schema: ---------------------- 1) Table ...

12. ternary associations and EJB3    forum.hibernate.org

Hibernate version: H3.1 EJB3 Jboss 4.01RC2 Just wanted to verify. Is it currently not possible (using annotations) to specify a ternary relationship using a Map and an association as an index? The reference documents hint that this may be possible as an EJB3 extension. I am sure I could do this using the mapping files but I would like to create ...

13. Ternary Associations    forum.hibernate.org

14. Non-standard ternary association question    forum.hibernate.org

15. Ternary associations - Many-to-Many-to-Many    forum.hibernate.org

Hello, I have read the documentation about the ternary associations http://www.hibernate.org/hib_docs/v3/re ... ns-ternary but the two hbm examples do not exactly apply to us (although the second one is very close). In our case we need association many-to-many between three objects so that any of the three objects can have either set of pairs of any combination of the other two ...