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Manual
8

JPA Named Queries

A named query is a statically defined query with a predefined unchangeable query string. Using named queries instead of dynamic queries may improve code organization by separating the JPQL query ... dynamically into the query string and results in more efficient queries. @NamedQuery
Tutorial
8

Step 1: Create a Maven Web Project

We start by creating a new Maven-WTP dynamic web project in Eclipse: Open the [New Project] dialog box, e.g. by using File > New > Project... Select Maven > Maven Project and click Next. Verify ... you should have a Maven based Eclipse dynamic web project (WTP) with Spring MVC Framework and ObjectDB/JPA support. The next step is creating a JPA Entity class.
Forum
8

Online backup with JDO

Hi, I would like to try the Online Backup tool as I am making backups up to now with the not ... is about starting the online backup. The manual suggests starting it via the EntityManager with the code em.createQuery("objectdb backup").getSingleResult(); But how do I start it if I am using
Manual
8

Database Management Settings

for backup purposes and for debugging (by providing the ability to reproduce problems by replay ... is "all" or "write") specifies which operations should be recorded. For backup purposes only "write
Forum
8

exception during online backup

hi   from time to time i get exception during online backup in server/client config: Exception in ... .newQuery("objectdb backup"); backupQuery.execute(); but this is not an urgent functionality for us br Thank you for your report. I will try to reproduce it by a test that uses online backup extensively
Forum
8

How to do an Offline Database Backup?

titled, "Sample JDO Architecture for Follow Up Questions".   I desire offline backups.  I ... until the backup is complete.  How can I guarantee that a database is no longer being used?  I think I ... any JDOUserExceptions.   What is the proper way to do an offline database datastore file backup
Issue
8

Online Backup

An ObjectDB database file can be backed up simply by copying the file (with the associated recovery file if exists). This should only be done when the database is closed. Online backup will enable backup also when the database is open and in use. Online backup is now implemented in ObjectDB 2.1.
Forum
7

Backup from explorer

Is it possible to make a backup from the explorer? If the database is not in use you can use the File > Open dialog and then copy and paste on the database file (right click a database file to see the copy command). But a safe online backup (while the database is in use) is not supported. jastorga
Forum
7

Online backup in embedded mode fails

Hi, As in topic. "online backup" fails when executed in embedded mode. Everything works fine with server mode. java.lang.NullPointerException at com.objectdb.o.BAC.(BAC.java:63) at com.objectdb.o.MST.U4(MST.java:1764) at com.objectdb.o.MST.U3(MST.java:1745) at com.objectdb.o.WRA.U3(WRA
Manual
6

Chapter 4 - JPA Queries (JPQL / Criteria)

, based on JPQL. The first section describes the API that JPA provides for using dynamic and static