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13

Optimistic locking: prevent version increment on entity collection attribute

get my collection back. When I use it in my web app it fails; the collection is null! In the application (web app ... Oudjane > In the application (web app), I create the readings in one call and I try to read them in ... , the test should reflect the way that your web application works, i.e. using different transactions
13

Tomcat + JPA Problem

the explorer with a Tomcat Application where can i find the db-files? Guschtl Markus The database location is specified on: http://www.objectdb.com/tutorial/jpa/eclipse/web/listener You can change it to absolute path and rebuild and redeploy the web application. The default ("$objectdb/db/guest.odb
2

Is ObjectDB better than competing object databases?

you can keep your application portable. If necessary, you will always be able to switch to any relational ... almost every application. ObjectDB supports user defined primary keys including composite primary keys. The support
2

Is ObjectDB scalable? What are its limitations?

ObjectDB is highly scalable and can manage efficiently databases in a wide range of sizes, from a few Kilobytes to hundreds of Gigabytes and even Terabytes. ObjectDB can be used in small embedded single user applications as well as in heavy loaded multi threaded multi user applications. ObjectDB
2

Obtaining a JPA Database Connection

with an EntityManager. Further, in a multithreaded application every thread usually has its own EntityManager instance while at the same time sharing a single application-wide EntityManagerFactory
2

Eclipse Public License - v 1.0

of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment ... OF SUCH DAMAGES. 7. GENERAL If any provision of this Agreement is invalid or unenforceable under applicable
2

ObjectDB Overview

, etc.) but in a way that makes development easier and applications faster. ObjectDB Database Key ... . Can easily be embedded in applications of any type and size. Tested with Tomcat, Jetty, GlassFish, JBoss
2

Database Explorer

by other applications. If the database is modified by another process the viewer windows in ... . This setting is relevant only in the Explorer. In your applications - retrieved String instances
0

Getting Started with JPA and NetBeans

This is the NetBeans version of the Quick Start with JPA tutorial. It demonstrates how to create and run a simple JPA application in NetBeans. The demonstrated application uses JPA to store and retrieve simple Point entity objects, where each Point has two persistent fields - x and y
0

Which API should I use - JPA or JDO?

. Therefore, it might be the first choice for most new applications. You can use JPA as the primary ... that are supported only by JDO. Selecting the more popular API leads to more portable application and extends

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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