table « Collection « JPA Q&A

1. How to change Collection type for depended tables in Hibernate forums.netbeans.org

Hello, I am using netbeans hibernate plugin to generate mapping files and POJOs for the hibernate. By default for relations, Collection type is java.util.Set. But I want to change it to ...

2. write all table entries/rows in a Collection forum.hibernate.org

Hi community, I am a hibernate newbie and a have a (maybe a beginner-) question: I have these tables in my MySQL database: SKILLDATA: ID - Integer - PK LVL - Integer DESC - String ITEM: ID - Integer - PK ... SKILLID - Integer - FOREIGN KEY to SKILLDATA.ID I create a new java class called SkillData.java, add an one-to-many ...

3. Best way to manage collection / linked table ? forum.hibernate.org

Hi, I'm not sure if this has been discussed before, couldn't find anything in the search (well, I could find a lot, but nothing matching exactly...). I'm looking at how I can manage a many-to-many relationship in a less complex way than I'm currently doing. I've got a spring/hibernate small app to manage two simple entities, User and Subscription. The way ...

4. value collections table forum.hibernate.org

Hi guys, Would be really grateful for any advice. In my mappings I have a couple of dozens of constructions like this: It means I have to have a couple of dozens of tables to store elements of value collections which is not perfect. I would rather have just one ...

5. Collections using Multiple Tables forum.hibernate.org

Hibernate 2.1.6. This is going to be such a noob question and I apologize. I've been able to create sets/bags/maps in Hibernate with simple one-to-many type relationships. But what about a relationship as follows (I'll include MySQL create table SQL definitions to give you an idea): Code: create table tpp_contracts ( id ...

6. multiple collections in a single table forum.hibernate.org

Hi, I have a class like public class EligibilityRules { long id; Set certifications; // set of name value pairs Set specializations; // set of name value pairs Set authorizations; // set of name value pairs ... ... // 10 more collections like the above } The straight-forward way is to map each collection to a separate physical table. However, there ...

7. filter collection which is for table per class hierarchy forum.hibernate.org

I have a superclass A that has 2 sub-classes B and C. I want to map them as "table per class hierarchy" structure. I have a parent class P has that collection of class A. My parent class P also has another collection of class X. I want to do a query to get all class P objects that have X.cardtype ...

8. Collection many-to-many between same table forum.hibernate.org

Want to create a relation object (many-to-many) between records from the same table... Say I have a table called RESOURCE (with ID, type, and name columns) and want to describe relationships between resources in a relational object. For example, RELRESOURCE (table) ------------------------- RESOURCEID1, id: long RESOURCEID2, id: long where RESOURCEID1 and RESOURCEID2 have foreign key constaints to an identity column in ...