composit « Key « JPA Q&A

1. need good example of hibernate with composit key    coderanch.com

Here's a little tutorial I put together on the topic of Hibernate JPA and Compound Primary Keys: Hibernate Composite Key Mapping Example The tutorial shows several ways to do it. package com.examscam.mappings; import javax.persistence.Embeddable; /* First Iteration of the CompoundKey Class */ @Embeddable public class CompoundKey implements java.io.Serializable{ private Long userId; private Long bankId; public CompoundKey() {} public CompoundKey(Long user, Long ...

2. configuration error with in composit    forum.hibernate.org

If I cut out the , i didnt have the problem. I have traced out the problem and have a fix, although Im not altogether sure why it works. Apparently, Middelgen mapped SQLServer columns of type uniqueidentifier to a java.lang.Object. Changing the mapping to a String seems to fix the problem. I didnt fully diagnose the problem but got far enough ...

3. composit key and primary key in hibernate    forum.hibernate.org

Newbie Joined: Tue Jan 18, 2005 4:29 am Posts: 6 package com.hibernate; import java.util.Set; /** * @hibernate.class table = "A" */ public class A { private Integer id; private String name; private Set b; public A() { super(); } /** * @hibernate.id generator-class = "assigned" unsaved-value = "null" * type = "string" * column = "id" */ public Integer getId() { ...

4. Part of composit primary key as part of composit foreign key    forum.hibernate.org

Newbie Joined: Tue Sep 13, 2005 9:15 am Posts: 4 Hi, I am facing a similar challenge with a legacy database (that of course cannot be altered). I have 2 tables that have 2 natural composite keys each and a join table. The 2 tables share one of the composite keys just like the previous posting. However, instead of a one-to-many ...

5. make composit primary key    forum.hibernate.org