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Objectdb recovery

after such events by running the ObjectDB Doctor. Regarding data lose, recovery returns your database

Guestbook Tutorial (Eclipse/Glassfish)

I have the tutorial working which has been a great help in understanding how to use ObjectDB. I have found one problem. The database file (C:\glassfish3.1\glassfishv3\glassfish\domains\domain1\eclipseApps\Guestbook\WEB-INF\db\guests.odb) is reset on occasions; I am not sure what set of events

Cast exception?

.entity.Player Description: Error during event handling: java.lang.ClassCastException: database.entity

ObjectDB stability after power failure

I'm considering using ObjectDB in a system that is going to be running continuously without support instantly available for many years. How stable is ObjectDB when it comes to power failures and unattended restarts? Is database integrity maintained during such events? I have seen database vendors

Getting Foreign Key

query = (WriteObjectQuery) event.getQuery(); query.getReferenceClass().getSimpleName() by using this i

How to convert a boolean to an int in the query?

them. You can calculate it in a JPA lifecycle event. Currently you cannot convert boolean to int in

ObjectDB JDO - foreign key constraints

you may be able to listen to JDO lifecycle events and then execute cascading operations by using the relevant code. support Support

Server crash - Mismatch client-server protocol prefix

We've been having a problem where our ObjectDB server goes unresponsive every 2 days or so. I've reviewed the server-side logs, and there are no events logged shortly before the crash. Once the server gets in this state, it is unresponsive to bin/server.sh restart; I have had to reboot the entire

Can't open DB-file with explorer, but from within my code it works

) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue

Tracking changes to new collections (in enhancement mode) after flush

of change events, including in embedded collections. We should check how this is implemented for nested

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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