8 | Multi part paths in a composite index must have the same length final long serialVersionUID = 998L; @Id @GeneratedValue long id; @Index private Long ... @GeneratedValue long id; private Long instrumentId; private SafeLong tStamp |
8 | 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 |
8 | EntityManager refresh problem entities; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class SimpleEntity { @Id @GeneratedValue private Long |
8 | Mysterious "Attempt to persist a reference to a non managed instance" error.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; import ... Serializable { @Id @GeneratedValue private long id; @OneToOne(fetch=EAGER, cascade |
8 | Problem with entities detection.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import ... { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy |
8 | 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 |
8 | On ensuring ID available after persist up to another element) I am using the following for the ID: @Id //@GeneratedValue(strategy = GenerationType.AUTO)// Explicit for EclipseLink + Oracle or MySQL @GeneratedValue//ObjectDB takes as |
8 | Join query problem with new statetment Inspiration extends BaseEntity implements Serializable, Convertable { @GeneratedValue(strategy ... public class Product extends BaseEntity implements Serializable, Convertable { @GeneratedValue |
8 | EntityManager getMetamodel() causes crash.GeneratedValue; import javax.persistence.Id; /** * MyEntity */ @Entity public class MyEntity implements ... @GeneratedValue private long id; private String name; MyEntity(String name) { this.name |
8 | 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 |
