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javax.persistence.GeneratedValue

Annotation GeneratedValue The GeneratedValue annotation. The use of the GeneratedValue annotation is only required to be supported

GeneratedValue.generator

Annotation Element GeneratedValue" title="Annotation in javax.persistence">javax.persistence.GeneratedValueString generator

GeneratedValue.strategy

Annotation Element GeneratedValue" title="Annotation in javax.persistence">javax.persistence.GeneratedValue

Auto Generated Values

Marking a field with the GeneratedValue">@GeneratedValue ... ="/api/java/jpa/GeneratedValue">@GeneratedValue with the GeneratedValue">@GeneratedValue(GeneratedValue/strategy

JPA Primary Key

public class Project { @Id GeneratedValue">@GeneratedValue long id; // still set automatically : } The TheGeneratedValue"> @GeneratedValue annotation

JPA Annotations for Value Generation

level, the @GeneratedValue with an optional GenerationType strategy is specified: GeneratedValue|GenerationType"> The @GeneratedValue annotation

Step 2: Entity Class and Persistence Unit

.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax ... long serialVersionUID = 1L; // Persistent Fields: @Id @GeneratedValue Long id

Step 2: Entity Class and Persistence Unit

.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax ... serialVersionUID = 1L; // Persistent Fields: @Id @GeneratedValue Long id

Step 2: Entity Class and Persistence Unit

.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements ... : @Id @GeneratedValue Long id; private String name; private Date signingDate

Step 2: Entity Class and Persistence Unit

.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity ... ; // Persistent Fields: @Id @GeneratedValue Long id; private String name; private