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failure to enforce NOT NULL for java.lang.String

: @Entity public class Request { public Request() { } @Id @GeneratedValue(strategy ... {         public Request() {         }         @Id @GeneratedValue(strategy=GenerationType

openejb jpa jaas module

; @GeneratedValue(strategy = GenerationType.SEQUENCE , generator = "gen") @Id private int ... = :mail") }) public class UserInfo implements Serializable { @GeneratedValue(strategy

@MappedSuperclass and @Transient not working as I expected

.persistence.EntityManagerFactory; import javax.persistence.GeneratedValue; import javax.persistence ... .persistence.Version; @MappedSuperclass public class DataObject { @Id @GeneratedValue

find() delay

();     }        @Entity     public static final class MyEntity {         @Id @GeneratedValue long id ... );   em.close();   emf.close(); } @Entity static class Node {   @Id @GeneratedValue(strategy

multiple LEFT JOINs do not work as expected

{         @GeneratedValue @Id private long id;         Node parent;         int depth ... static final class Node { @GeneratedValue @Id private long id; Node parent

Query only works correctly when debug printing results

{ @Id @GeneratedValue private long id; private String reqLevelName = "DEF"; @OneToMany ... long serialVersionUID = 5019171545896480392L; @Id @GeneratedValue private long id

can't get HashMap out of the database

; // Persistent Fields: @Id @GeneratedValue Long id; private String name; private ... is: @Entity public class GuestHolder { // Persistent Fields: @Id @GeneratedValue

Inserted entities with strings as keys and indices needs more and more ram memory in comparing to primitive integers as keys and indices

@GeneratedValue primary keys are sequential. So when you persist multiple new objects their primary keys ... that long primary keys are more efficient than String UID primary keys. Automatic @GeneratedValue

Attempt to execute a query using a closed EntityManager

. id is a long field in Client, so it should be there after Client is set. Id has @Id @GeneratedValue ... " field which is @Id @GeneratedValue(strategy = GenerationType.IDENTITY)? Shouldn't

Error 613 - i cant put a list<Athlete> into a Squad object

.persistence.GeneratedValue; import javax.persistence.Id; import javax.persistence.OneToMany; @Entity ... {     /**      *      */     private static final long serialVersionUID = 1L;     @Id     @GeneratedValue     private long id

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