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forum_thread

JDO manual

#1 2010-05-22 19:09 Request for a new JDO manual, covering ODB 2. edit ...

 
forum_thread

Safe Settings

Hi, I am trying to set up ObjectDb in a safe way that allows turning the machine off while database transactions are running. I would like to test if things are really safe and if I don't get corrupted database files in any possible case. I found "recovery" and "recording" in the objectdb.conf file. Which one is safer to use? I suppose I should turn on sync="true", right? #1 2011-03-28 16:05 Hi, I am trying to set up ObjectDb in a safe way that allows turning the machine off while database trans ...

 
manual

Chapter 1 - Quick Tour

Quick tour on how to use Java and JPA with the ObjectDB Object Database.... program. After reading this chapter you should be able to write basic programs that create, open and close ObjectDB databases and perform ...

 
page

What is new in ObjectDB 2.0?

ObjectDB 2.0 supports many new features and improvements, including: Most of the features of the new JPA 2.0 and JDO 2.2 APIs. User defined IDs (primary key) and sequences. Support of unlimited index keys size. SQL like queries (" ...

 
page

ObjectDB License Agreement [ver. 2.0.4]

Please read carefully this software license agreement. By downloading, installing or using the software you agree to the terms and conditions of this agreement. If you do not agree to these terms and conditions - do not download, install or use the s ...

 
forum_thread

Access entity version before commit transaction

Hi, I have a usecase where I need to write the updated entity id to the database before commiting the transaction: 1. Change entity field e.g. from a to b 2. Create a change entry in database containing the new version of the entity ... Hi, I have a usecase where I need to write the updated entity version to the database before commiting the ...

 
issue

NullPointer running multiple client against server

Hi, I'm running objectdb in server mode, config as it comes out of the box. In this case the database is being used as a queue with multiple seperate processes, each with multiple threads, writing messages. The message is split into a lightweight metadata message to allow fast searching and a more heavy weight data message. The put methods are shown below. The message is made up of an id, insert-time, priority and the payload is a large string. Bug Version: 2.2.7 Priority: Normal Status: Fixed Replies: 2 Type:  Bug ...

 
api-jdo

PersistenceCapable.READ_WRITE_OK

If jdoFlags is set to READ_WRITE_OK, then the fields in the default fetch group can be accessed for read or write without notifying the StateManager.(Static Field of javax.jdo.spi.PersistenceCapable)

 
forum_thread

Retrieve data of all entity classes in a single query

I have in an objectdb file 10 Entity Classes with some data in each (Athlete, Trainer, Stadium etc) This is the code I use to retrieve all Managed Types and data for the Athlete class #1 2014-08-11 17:48 I have in an objectdb file 10 Entity Classes with some data in each (Athlete, Trainer, Stadium etc) This ...

 
forum_thread

How to define database structure and insert some initial objects from scratch

Hi from Spain! We're evaluating ObjectDB and we have some questions: - How can we create the initial database structure of our application? We know objectdb is all about objects and probably not need initial structure like tables, but how can we populate some "tables" with initial data from a script? In SQL world we have scripts like "insert into..." - Can we use main objectdb.jar library as jdbc driver for ETL software like Kettle? How about migrating data from another database system? ... To populate the database you will have to write Java code. That code, however, could be simple. Just build your entity ...