Primary Key « Annotation « JPA Q&A

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1. Hibernate creates two primary keys when I only want one    stackoverflow.com

I have a Hibernate class called Expression (simplified here for your viewing pleasure): 

@Entity
public class Expression {
    @Id
    @GeneratedValue
    private long id;

  ...

2. Hibernate Annotation, how to define two primary keys    stackoverflow.com

I have a class in java that has a numerical Id and username (a nature primary key). I want that Id and username be primary keys (not combined). 

Create table (
 ...

3. Hibernate Annotations for Primary Key    coderanch.com

Hi, My appliction is on Spring with tomcat-5.5 server. I am using hibernate annotation for generating primary key as auto as @Id @GeneratedValue(strategy = GenerationType.AUTO,generator="test_sequence") @SequenceGenerator(name = "test_sequence",sequenceName="TEST_SEQ") @Column(name = "ID", unique = true, nullable = false) I want to know what generator class should i use in my test.hbm.xml if i use GenerationType.AUTO stratagy in Test.java file.Currently i am using ...

4. how to join tables wih none primary key using annotaions    forum.hibernate.org

5. Hibernate annotations - Shared primary key    forum.hibernate.org