About entities

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Forum
16

Update more than 10000 entities by an update query fails

Hello, following example tries to update more than 10000 entities by an update query ... (AccessType.FIELD) @Entity public static class MyModelElement { @Id int id ... .getTransaction().begin(); EntityA entity = new EntityA(1); em.persist(entity
Manual
15

Paths and Types in JPQL and Criteria API

Instances of user defined persistable classes (entity classes, mapped super classes and embeddable ... . For example - c.capital, where c represents a Country entity object uses the capital persistent field in the Country class to navigate to the associated Capital entity object. Path expression whose type
Manual
15

Locking in JPA

, are detected earlier. Optimistic Locking ObjectDB maintains a version number for every entity object. The initial version of a new entity object (when it is stored in the database for the first time) is 1. In every transaction in which an entity object is modified its version number
Manual
15

Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema ... of an entity class are detected by ObjectDB. New entity objects have to be stored in the new class schema, and old entity objects, which were stored previously in the old class schema
Forum
15

@Entity saved in Tomcat session - problem

Hi, I have found a problem, when storing @Entity object in Tomcat session. When starting or ... is to create copy of @Entity class as normal POJO and use it to store in session. The problem ... on this? The exception indicates an attempt to serialize an entity object (when Tomcat stores the session before
Issue
15

ArrayIndexOutOfBoundsException with enhanced Entity

Hi! We have an two entities, the first one is something like: @Embeddable class TestEmbed {...} and the second one: @Entity class TestEntity { private TestEmbed myEmbed = null; public TestEmbed ... of a managed object etc etc.). However It seems to happen only with an embeddable entity embedded
Forum
15

Entity name

created a class named EBResult which looks like this: @Entity(name="RESULT") public class EBResult ... library) I expected to see an object named "RESULT" due to class annotation @Entity(name="RESULT"). Instead I see following: 2.1. Why? Is the @Entity(name="RESULT") ignored by ObjectDB? 2.2
Issue
15

Entity Version History

ObjectDB manages automatic entity versioning (for optimistic lock purposes). Every entity object modification is reflected by a new version number. Naturally, previous values in the entity object ... to go back in time and view old versions (and old values) of entity objects. Future versions of ObjectDB
Forum
15

Find the error...JPA ENTITY HIBERNATE

.html       Entities:   package com.example.demo; import java.io.Serializable; import java.util ... ; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType ... ; @SuppressWarnings("unused") @Entity @Table(name = "user") public class user implements
Forum
15

JBOSS AS7 7.1.1 - Entity not persisted and createNamedQuery fire exception

.java:809) * entities are not getting persisted I get the problem with jboss as 7.1.1.Final but not ... said that the annotation should be used on the entity class and not the ejb class. So I annoted the Guest class but still called the createNamedQuery from the GuestDAO @Entity @NamedQueries