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Tutorial
9

Eclipse/JPA Web Application Tutorial

. Every visitor that has signed the guestbook is represented by a Guest entity object and all the Guest entity objects are stored in an ObjectDB database. Required Software For this tutorial you will need ... a database driven Java web application in Eclipse - using Tomcat 6, ObjectDB and JPA. The demo web
Tutorial
9

JPA Web Application Tutorial

a Guest entity object and all the Guest entity objects are stored in an ObjectDB database ... This tutorial demonstrates how to create and run a database driven Java web application using Tomcat 6, ObjectDB and JPA. The demo web application manages a basic guestbook page. Every visitor
Tutorial
9

NetBeans/JPA Web Application Tutorial

a database driven Java web application in NetBeans - using Tomcat 6 Apache Tomcat Server 6.0 (some ... that has signed the guestbook is represented by a Guest entity object and all the Guest entity objects are stored in an ObjectDB database. Required Software For this tutorial you will need the following software
Tutorial
9

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the project node (in the [Package Explorer] window ... should represent Point objects in the database. Besides the @Entity annotation and the id field
Tutorial
9

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Open the [New Java Class] dialog box, e.g. by right clicking the tutorial package node (in the [Projects] window ... ("(%d, %d)", this.x, this.y); } } The new class should represent Point objects in the database
Result
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What is new in ObjectDB 2.0?

optimistic locking support. Performance improvement in writing and reading of objects. Level 2 (PersistenceManagerFactory scope) object data cache. Query program cache for repeating queries ... configurable database page cache. Designed to support very large database files (terabytes). Reducing round
Result
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How to upgrade from ObjectDB 1.0?

the new Enhancer. Convert old database files using the ObjectDB converter: > java -jar converter.jar ... is more sensitive to failure to close a PersistenceManagerFactory. The database is closed ... . To use embedded objects you must declare classes as embeddable (rather than the reference fields
Issue
9

JPA Composite Key make Object Db throws "Unexpected exception (Error 990)"

Hello Object Db community :) I am using this wonderful library and I caught a strange exception ... are compliant with the object Db Documentation: http://www.objectdb.com/java/jpa/entity/id Unfortunately, while merging the entity, object db is throwing the following Exception : [ObjectDB 2.4.0
Forum
9

Object DB vs EclipseLink/TopLink: Unloaded relationships in detached entities

a FETCH JOIN as described here: Detach JPA objects with lazy initialized properties This has the big ... .eclipse.org/mhonarc/lists/eclipselink-users/msg05258.html: Detached Objects get the connection need ... loading association from the database, when it needs it (without any merge call). From doug clarke
Forum
9

Object explorer cannot open odb file. ObjectDB many-to-many relationship

.getAssignements().get(a11pk); assertEquals(p1, a11.getProject()); But: Question 1: After my test, the database ... get an Assignement object from User object and Underlying object (but not through theirs keys). I'd like to work with typed object in the code whenever possible, and make key usage as transparent as possible