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Manual
8

Obtaining a JPA Database Connection

In JPA a database connection is represented by the EntityManager interface. Therefore, in order ... to get an EntityManager instance. JPA requires the definition of a persistence unit in an XML file in order ... persistence unit in an XML file or you can simply provide the file path of the ObjectDB database
Manual
8

Defining a JPA Entity Class

To be able to store Point objects in the database using JPA we need to define an entity class ... (annotated) as having the ability to represent objects in the database. Conceptually this is similar ... Class The following Point class, which represents points in the plane, is marked as an entity class
Forum
8

Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

ObjectDB support, while the entities in a result set list from a JPQ query are initially managed ... of the container, and then in ObjectDB (but not in EclipseLink) lazy loading fails. The 3 possible solutions in the ObjectDB case seem to be: 1. Use explicit FetchType.EAGER on all desired collections
Issue
8

Schema-Update: Deactivation of automatic entity class removing and introduction of a new class remove in the schema config

Hello, in our application we use ObjectDB in embedded mode as part of the Profile ... design. The product can be installed in different configurations (in other words with more or ... of entites which are not found in the class path. With this background it would be very helpful
Forum
8

in-memory and on-disk support?

looking at replacing a setup of H2 where I have 40GB in-memory backed by 800GB on-disk, the 40GB in ... , the records at the end continuously purge as the new ones come in(duplicate write, one to in-memory and one to on-disk). Does ObjectDB offer a similar in-memory/on-disk option? I noticed the embedded and TCP
Forum
8

Configuration and Activation Code in ObjectDB 2.x

the odbee.jar file and got the activation code.It is mentioned in the side that i need to use the activation code using tag in the objectdb.conf file. In 1.x objectDB, we are not using ... about the ObjectDB 2.x configuration file is provided in chapter 6 of the ObjectDB Manual. The location
Forum
8

Corrupted Database or error in ObjectDBExplorer?

). Can you analyze the problem and tell us if its a problem of the explorer or a real problem in ...   (its the 9th entity)   If we execute queries in the explorer we observed the following: "select x ... " -> the expected Ids, but null for the class   any ideas? The data in this database is probably fine
Forum
8

What role is the JDO in ObjectDB?

Mike Keith believe the JDO is out of date. Then what role of JDO in ObjectDB? Will our codes with JDO be out of date? Due in part to some of the failures of the EJB persistence model, and some ... and consuming them. JDO also had a query language that was decidedly object-oriented in nature, which did
Forum
8

Externalising persistence.xml properties in Glassfish?

for your time! Hello, Why dont you create multiple  presistance units in the persistance.xml and that way ... them up if you give the place holder. I know I have tried this in the application.xml  and I dont see why it wont work ... . Well this should do the trick. in your persistance.xml use placeholders for the data you want. In
Forum
8

How to open a running db in ObjectDB Explorer?

Hi! I've just discovered that I can't see the content of a database while it's in use. Is there any way in which I could do that? It's not nice at all to close the application, copy the db in ... of the data, not the live information. * I forgot to mention that the db is used in embedded mode