About update

manual

UPDATE SET Queries in JPA/JPQL

Explains how to apply server side bulk update using a JPA/JPQL query.... by calling the commit method. JPQL UPDATE queries provide an alternative way for updating entity ... which are used to retrieve data from the database, UPDATE queries do not retrieve data from the database, but when executed, update the content of specified entity objects in the database. ...

 
manual

Updating JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database.... covers the following topics: Transparent Update Automatic Change Tracking UPDATE Queries Transparent Update Once an entity ...

 
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 (" ...

 
manual

CRUD Database Operations with JPA

Shows how to use Java/JPA to store, retrieve, update & delete.... to the object database, we can use it to store, retrieve, update and delete database objects. Storing New Entity Objects The ... getX ( ) + 100 ) ; // update entity em. getTransaction getTransaction() ...

 
manual

Schema Update

Explains how to handle JPA/JDO database schema evolution in ObjectDB.... <schema> element demonstrates the supported schema update abilities: <schema > <package name = ...

 
tutorial

Step 1: Install BIRT and ObjectDB Driver

Explains how to install the BIRT and ObjectDB Eclipse features/plugins.... the Eclipse IDE for Java EE Developers. Update your existing Eclipse IDE for Java EE Developers environment by installing the BIRT plugins  using the Eclipse Update Manager (updating Eclipse IDE with no Java EE support is more ...

 
manual

CRUD Operations with JPA

Explains how to use JPA for CRUD database operations (persist, retrieve, update, remove). The following subsections explain how to use JPA for CRUD database operations: Storing JPA Entity Objects Retrieving JPA Entity Objects Updating JPA Entity Objects Deleting JPA Entity Objects ...

 
manual

Chapter 3 - Using JPA

Explains how to store, retrieve, update and delete entity objects using JPA. This chapter explains how to manage ObjectDB databases using the Java Persistence API (JPA). The first two pages introduce basic JPA interfaces and concepts: Database Connection using JPA Working with JPA Entity Objects ...

 
issue

Explorer bug ? Objects seem to be missing from database in Class view, but are present as references

objectdb-2.2.5_08 NetbeansID6.9.1+Glassfish3.01 I suspect the following is an Explorer bug. It is marked knowingly as CRITICAL by me because it makes the ObjectDB system unusable for a real project because it appears to be either database integrity corruption, or it just looks like it, which is just as bad. I attach a running project illustrating the problem, as well as screenshots. ... To post a reply and/or subscribe to update notifications - please login . ...

 
forum_thread

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

Hi, we are using ObjectDB 2.5.4_04 on Linux. Our application, which uses ObjectDb as a DB, exposes a Java RMI interface which allows remote RMI clients to run JPQL queries on the DB. The application internally runs SELECT NEW ... queries. For example: ... remote RMI client runs SELECT (but not SELECT NEW ...) and UPDATE JPQL queries on the DB via the RMI interface. What we noticed is that once we UPDATE a record from the client (via the RMI interface), all SELECT NEW ... ...