Fast Object Database for Java - with JPA/JDO support

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References to objects of missing obsolete entity classes

are in the database but their classes have been deleted or missing? This is abnormal state ... a dummy (enhanced) entity class in your project for that obsolete entity class. support Support ... itself, is it correct that the objects are in the database but their classes have been deleted or missing

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 ... .createQuery("SELECT t FROM HotTag t ORDER BY t.activity DESC", HotTag.class); I get the exception

JPA Primary Key

and its primary key. Primary key values are unique per entity class. Instances of different entity classes, however, may share the same primary key value. Only entity objects have primary keys. Instances ... key field: @Entity public class Project { @Id @GeneratedValue long id; // still set

Enhancing a class causes it to not save changes.

So when we enhance the Account class, no changes are saved to it. When it is reflection mode, everything works perfectly. In reflection mode, the objectdb log on debug mode refers to classes ... out how ObjectDB is holding on to the old classes, as they have not existed for months. I've tried running

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 org.h2 ... $$$view3.test(Unknown Source) [classes:] at services.PaltzefomatServlet.doPost(

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

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

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 ... .createQuery("SELECT c FROM Cdr c where c.start.DAY_OF_WEEK = ?1",Cdr.class); query.setParameter(1

com.objectdb.o.TEX: Type ... is not found, for a class that's already been enhanced successfully.

to implement Enhancement (because the log always says that the classes are not enhanced). The main class starts like this, and does not reference any persistent classes directly. static void main(String ... .class.getClassLoader()); Here is the output, it seems like the above code does manage to enhance

How to create dynamic Entity class.

to create dynamic class. Here i have written some code which is create dynamic class as well as object. Class and object successfully created. And insert data also now problem is only once object is created ... A ClassCastException is thrown because of a ClassLoader conflict, i.e. the same class is defined by

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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