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system exception occurred during an invocation on EJB GuestDao

) at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:582) at org.jboss.weld.ejb ... ) at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke ... :582) at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke

ObjectDB 2.2.1

Added support for using ObjectDB with JBoss AS 6.0 / 6.1. Fixed several bugs in handling eager fetch. Fixed a pessimistic locking bug. Fixed a bug in using primary key fields in queries. Fixed a bug in queries on deleted objects before commit / flush.

ObjectDB 2.5.5

that is already running (avoiding further attempts). Fixed a memory issue with using ObjectDB with JBoss ... time zones. Fixed log archiving to affect only "odb*.log" files. Fixed an Explorer bug in displaying Integer embedded ID fields as Long.

Server Configuration

to the database (as explained in the JPA Overview section in chapter 3). The max attribute specifies the maximum ... prefix, if specified (as demonstrated above), represents the ObjectDB home directory. The data path

ObjectDB License Agreement [ver. 2.0.4]

is distributed and only as part of the Customer's product ("The Product"). The Product is not a Database ... "AS IS" without a warranty of any kind. All express or implied representations and warranties

Spring MVC and JPA Tutorial

that has signed the guestbook is represented as Guest JPA entity object, and all Guest entity objects are stored in an ObjectDB database. This tutorial is available in the following versions: In addition, the demonstrated application is available as a Maven project:

Report Generation with BIRT and JPA

This tutorial demonstrates how to create reports based on data in an ObjectDB database using the popular open source Business Intelligence and Reporting Tools (BIRT). In order to keep things as simple as possible - we will use the basic points.odb ObjectDB database file from the Getting Started

Step 2: Define a JPA Entity Class

To store objects in an ObjectDB database using JPA we need to define an entity class: Right click on the project in the [Package Explorer] window and select New > Class. Enter tutorial as the package name (case sensitive). Enter Point as the class name (case sensitive). Click Finish to create

Step 3: Add a Context Listener Class

as the class name - use exactly that case sensitive class name. Click Next and then Select ... instance and stores it as an application scope attribute in the servlet context - when the web application


, this method returns the identity as of the beginning of the transaction. Parameters: pc - the calling ... the current transaction, this method returns the current identity as changed in the transaction ... transient instances made transactional as a result of being the target of a makeTransactional method

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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