About @Embeddable

issue

Error reading UTF string (Serialized Objects in Explorer)

This is the message I get for attached db and this query: Bug Version: 2.3.6 Priority: Normal Status: Fixed Replies: 6 Type:  Bug ...

 
manual

Comparison in JPQL and Criteria API

Explains how comparison operators can be used in JPQL queries, including in comparing null values. Most JPQL queries use at least one comparison operator in their WHERE clause. This page covers the following topics: Comparison Operators Comparing NULL values IS [NOT] NULL Comp ...

 
forum_thread

Some details about db behavior

Suppose I have two entities... A B -> A B has a ManyToOne relationship with A. When my database is empty and I persist a valid B entity (that contains actual A reference) I observe some behaviour that I'm not sure I understand. #1 2014-06-26 15:16 Suppose I have two entities... A B -> A B has a ManyToOne relationship with A. ...

 
release

2.2.7

Release date: 2011-06-14 Download (5.13 MB) Binary:  objectdb-2.2.7.zip You should start by following a  tutorial or reading the manual ...

 
release

2.4.7

Release date: 2013-02-25 Download (5.42 MB) Binary:  objectdb-2.4.7.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Dirty checking

Hi, wondering if anyone knows the best way to detect which objects have been changed in the database. ie: which objects, and which collections of objects, have been dirtied.     ... classes can't register change listeners? ie: @Embeddable @EntityListeners (Listener.class) So, having to go and make ...

 
manual

JPA Persistence Unit

Explains how to define a JPA persistence unit in the persistence.xml file. A JPA Persistence Unit is a logical grouping of user defined persistable classes (entity classes, embeddable classes and mapped superclasses) with related settings. Defining a persistence unit is optional when using ObjectDB, but required by JPA. ...

 
forum_thread

A few questions on object database design

I've been trying to model a database that stores data in an MMORPG. With ObjectDB, a lot of things are easier to perform. Intuitively, I created an entity class called player and stored everything about the player as embeddable classes. However, my colleague questions about this structure, since we would be looking at persisting data from the server every minute or two per player. He has stability issues with the ObjectDB if we are accessing the same table all the time. #1 2014-06-18 11:33 I've been trying to model a database that stores data in an MMORPG. With ObjectDB, a lot of things are easier ...

 
release

2.6.9

Release date: 2016-08-10 Download (5.58 MB) Binary:  objectdb-2.6.9.zip Version 2.6.9 Added support for integration with WebSphere ...

 
release

2.2.6

Release date: 2011-06-02 Download (5.13 MB) Binary:  objectdb-2.2.6.zip You should start by following a  tutorial or reading the manual ...