1. Compound keys in JPA stackoverflow.comI want to make an entity that has an autogenerated primary key, but also a unique compound key made up of two other fields. How do I do this in JPA? |
2. Joining tables with Compound Keys in JPA/Hibernate stackoverflow.comOkay, our DB team has come up with the following structure. I cannot change it: Report
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3. JPA: how to model compound key which contains also a foreign key? coderanch.comHi developers, I would like to have some piece of advice by you gurus about a modelling problem I am currently experiencing in my (simplified) JPA scenario I have: Building entity (identified by an id) Room entity (identified by number, floor and building) Of course both Room and Building have other info fields. A coleague of mine proposed to - create ... |
4. Compound Primary Keys forum.hibernate.orgI have a requirement to have a compound key for my database schema. Below is my compound key: @Embeddable public class CompoundPK implements Serializable { @Column(name="REGION_ID") private long regionId; private long id; //omitted constructors, getters, setters for brevity. } My entity hierarchy is below @Entity @Table(name="table1") @Inheritance(strategy=InheritanceType.JOINED) public abstract class NamedEntity{ @EmbeddedId protected CompoundPK id; @Column(name="LAST_NAME") protected String lastName; } @Entity ... |
5. Compound Key with two parent tables help forum.hibernate.org(parent) CREATE TABLE doctors ( id numeric(10) NOT NULL, name varchar(30), CONSTRAINT doctors_pk PRIMARY KEY (id) ) (parent) CREATE TABLE patients ( id numeric(10) NOT NULL, name varchar(30), CONSTRAINT patients_pk PRIMARY KEY (id) ) (children) CREATE TABLE addresses ( id numeric(10) NOT NULL, <-- either the doctors.id ... |
6. Error when updating a compound key forum.hibernate.orgNewbie Joined: Mon May 19, 2008 2:30 am Posts: 2 Hibernate version: 3.2.5 Database name and version: PostgreSQL, version: 8.3.0 Hi there, I've been dealing with this for several hours and I would really appreciate any help that you could provide me. I've 2 entities, one called "Empleados" (Employees) and another one called "Ausencias" (Absences). I have created their respective entities ... |
7. Compound key from other childobject forum.hibernate.orgHibernate version: 2.2 I am having trouble with a fairly complex relationship I am trying to create. I want to have a child object which has a compound key, but part of that key comes from a field on another child object. In this case the JeanieUserTyped.ApplicationId = ShortCode.ApplicationId Below is the invalid mapping file (applicationId is wrong) Mapping documents: |
8. JPA One-To-Many with Compound Key forum.hibernate.orgAuthor Message bdrhoa Post subject: JPA One-To-Many with Compound Key Posted: Tue Jun 16, 2009 4:06 am Newbie Joined: Tue Jun 16, 2009 3:39 am Posts: 3 Hi, I have 3 tables: MetadataCollection, Item and CollectionItem. The primary key for CollectionItem is the composit key collection_id+item_id. So CollectionItem item has an @Embeddable CollectionItemPK class. My question is how do ... |