About class

101-110 of 200Refresh
Manual
11

Auto Generated Values

@GeneratedValue with the AUTO strategy: @Entity public class EntityWithAutoId1 { @Id @GeneratedValue ... definition is equivalent: @Entity public class EntityWithAutoId2 { @Id @GeneratedValue long ... is very similar to the AUTO strategy: @Entity public class EntityWithIdentityId { @Id
Forum
11

Duplicate Entity class names causes Exception in Query

I have two Entities which have the same class name but reside in different packages, only one of them is mentioned in the persistence.xml. I a NamedQuery I use the unqualified class name ... ) ... 64 more Here is the class doing the query on objdbTest.Item package objdbTest; import
Forum
11

Using the wrong class to access a database

; // imports public class Main { public static void main(String[] args) { run(); } static void run() { System.out.println("Test 1"); System.out.println("Point.class: " + Point.class ... Point p", Point.class); List results = query.getResultList(); System.out.println
Issue
11

Super class' field access fails

I have a base class: public abstract class HotObject extends BaseObject { private Integer ... ; } }   And I have an inherited class: @Entity public class HotTag extends HotObject implements ... = em.createQuery("SELECT t FROM HotTag t ORDER BY t.activity DESC", HotTag.class); I get the exception
Forum
11

Problem to use find method on an abstract Class: AbstractMethodError is thrown

mentioning LogicalObject I get AbstractMethodError Please see services.Tester class with the 2 options ... .datasources] (ServerService Thread Pool -- 27) JBAS010403: Deploying JDBC-compliant driver class ... $$$view3.test(Unknown Source) [classes:] at services.PaltzefomatServlet.doPost(PaltzefomatServlet
Forum
11

Field not persisted in abstract class with two level of nesting

Hi, I have a field (embedded TZ1) which is not persisted in class MHD1 (TZ1  extends AS and AS ... public class MHD1 implements Serializable{     private TZ1 timezone;     public MHD1 ... ; @Embeddable public class TZ1  extends AS{     TZ1() {     }         public TZ1(String v
Issue
11

No Entity Class API

Both JPA and JDO are based on accessing and managing data in the database using persistable classes (mainly entity classes in JPA or persistence capable classes in JDO). Usually, this is very convenient. Sometimes, however, it might be useful to access data without user defined persistable classes
Forum
11

query on calendar class

Hello!   I'm looking for help to build query on calendar class. I need to get objects where Calendar.DAY_OF_WEEK is FRIDAY or any other. My class: @Entity public class Cdr {     private static ... =em.createQuery("SELECT c FROM Cdr c where c.start.DAY_OF_WEEK = ?1",Cdr.class); query.setParameter
Forum
10

Add class to objectdb ?

Hello , i've made blank db project and opened with explorer.jar How can i add class file then push ... blank ? How can i add classes?   I've clicked on create & persist button. Here is the problem i got ... .java:97) Currently to add new classes in the explorer you will have to use a workaround: Run
Forum
10

Class loading problem with private packages in OSGi environment

the classloader of the bundle of the entity. And not his own. The change of the context class loader ... of the entity. And not his own. ObjectDB is in another bundle and can only access classes and interfaces ... and not just by loading the implementing classes (for the persistent interfaces feature). > Creating