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Jakarta Persistence (JPA) Annotation Type jakarta.persistence. EmbeddedId Implemented Interfaces ... . If a field or property of an entity class is annotated EmbeddedId , then no other field or property of the entity may be annotated Id or EmbeddedId , and the entity class must not declare an IdClass

.persistence.Embeddable; import javax.persistence.Embedded; import javax.persistence. EmbeddedId ; import ... ;@ EmbeddedId         private AId id;         

********* @Entity public class A { @ EmbeddedId private CompositePK pk; } @Embeddable public class CompositePK

the mapping for an EmbeddedId primary key, an attribute within an EmbeddedId primary key, or ... { @Id long empId; String name; ... } And then the dependent entity uses EmbeddedId to declare ... to primary key type of Employee } @Entity public class Dependent { @ EmbeddedId DependentId id

annotated Id or EmbeddedId . Fields or properties of an embeddable class are persistent by default ... ; } See Also: Embedded EmbeddedId Since: Jakarta Persistence (JPA) 1.0 The JPA Persistable Types article explains

.persistence . Embeddable ; import javax.persistence . EmbeddedId ; import javax.persistence . Entity ... = "id.ab") into @ EmbeddedId fails!  *   *         question ... ; a part of EmbeddedId ?  */ public class OdbInverseEmbIdMapping {      public static void

EmbeddedId PersistenceUnitUtil.getIdentifier(Object) Since: Jakarta Persistence (JPA) 1.0 The JPA Primary Key

Date birthDay; ... } public record EmployeePK(String empName, Date birthDay) {} See Also: EmbeddedId

class must have at least one field or property annotated Id or EmbeddedId holding the primary key

; import java.util.List; import javax.persistence.Embeddable; import javax.persistence. EmbeddedId ... {     @ EmbeddedId private Primkey2 primkey;     private Primkey2 primkeycopy

ArrayList (); }   @ EmbeddedId public TimePeriod getId() { return id; }   public void setId

; this.employees = employees; } @ EmbeddedId public DomainId getDomainId() { return domainId; } public void

Book { @ EmbeddedId BookId id; } @Embeddable Class BookId { Integer bookIdCountry; ECountry country ... ; @ EmbeddedId public MyEntityId id;     }         

; } @ EmbeddedId public TimePeriod getId() { return id; } public void setId(TimePeriod id) { this.id = id

in preserving order of @ EmbeddedId fields. Fixed a NullPointerException during cache cleanup. Fixed