About projection

release

2.3.1

Release date: 2011-10-02 Download (5.48 MB) Binary:  objectdb-2.3.1.zip You should start by following a  tutorial or reading the manual ...

 
release

2.3.0

Release date: 2011-09-21 Download (5.32 MB) Binary:  objectdb-2.3.0.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Remove an entity which attributes were changed - OptimisticLockException

We use an OSGi environment and we have three OSGi plugins.   In plugin A an entity is loaded and the entity is passed to plugin B. Plugin B changes an attribute on the entity. Plugin C removes the entity from the database. After commit the transaction an exception is caused with optimistic lock exception of the removed entity. If this operations on the entity are executed in only one plugin, it works well. #1 2016-04-14 13:06 We use an OSGi environment and we have three OSGi plugins.   In plugin A an entity is loaded ...

 
release

2.3.2

Release date: 2011-10-25 Download (5.48 MB) Binary:  objectdb-2.3.2.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Selective merge/cascade of detatched entity

I'm having an issue with my application, and I'm hoping you guys will be able to help. Please forgive typos and obvious errors, I'm having to retype from a non-internet connected network. A contrived example is: #1 2012-11-16 15:20 I'm having an issue with my application, and I'm hoping you guys will be able to help. Please forgive typ ...

 
manual

[ODB1] Chapter 3 - Persistent Classes

Explains what a persistence capable class is and which types are supported by JDO. Persistent Classes are user defined classes whose instances can be stored in a database using JDO. Instances of these classes that represent objects in the database are called persistent objects or persistent instances . Objects that do not repre ...

 
release

2.2.9

Release date: 2011-08-10 Download (5.15 MB) Binary:  objectdb-2.2.9.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

PersistenceException UserException: Failed to validate persistence.xml

I'm really tired of looking at the same exception all day. I have DaoService which gets initialized when app starts. #1 2013-07-31 23:30 I'm really tired of looking at the same exception all day. I have DaoService which gets initialized when ...

 
forum_thread

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 final long serialVersionUID = 1L;        @Id @GeneratedValue     private long serialID;     private String A;     @Temporal(TemporalType.TIMESTAMP) private Calendar start; I tested: #1 2014-07-27 21:24 Hello!   I'm looking for help to build query on calendar class. I need to get objects wh ...

 
forum_thread

Insertion Speed Rate and Batch Load

1. I got about 10K inserts / second, is it normal? I would expect more than that, like close to 100K/second. I can definitely do 80K inserts/seconds on Oracle with batch insert on table with one primary key. 2. Is batch update/insert operation supported? I attached the files. #1 2011-05-03 22:01 1. I got about 10K inserts / second, is it normal? I would expect more than that, like close to 100K/second. I ca ...