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Posting Sample Code

sample program. If an unexpected exception (e.g. NullPointerException or ClassCastException) is thrown by ObjectDB - posting the full stack trace with no sample program (using the Issue Tracking system) may be sufficient to locate the problem. In most other cases - a sample program may be required

Sample JDO Architecture for Follow Up Questions

Sample JDO Architecture for Follow Up Questions

JPA Lifecycle Events

> <entity-listeners> <entity-listener class="samples.MyDefaultListener1" /> <entity-listener class="samples.MyDefaultListener2" /> </entity-listeners> </persistence

What's next?

Tutorial These tutorials explain how to run the sample program. You can easily start your own ObjectDB/JPA projects simply by modifying this sample program. Reading the Next Chapters

JPA Persistence Unit

>packedEntity.jar</jar-file> <class>sample.MyEntity1</class> <class>sample.MyEntity2</class

Storing JPA Entity Objects

too much memory. The sample code above clears the persistence context after every 10,000 persists. Updates

Is ObjectDB better than competing object databases?

community, forums, IDEs support, tools, books, tutorials and sample code. ObjectDB is also unique in

[ODB1] Chapter 2 - A Quick Tour

This chapter introduces basic ObjectDB and JDO concepts, using two sample programs. We start with the HelloWorld sample program, which is not JDO portable because it uses some ObjectDB extensions, but it is a good sample to start with because of its simplicity. We then proceed with the JDO Person

JPA Tutorials

instructions on how to create the sample applications. In addition, the sample applications

Getting Started with JPA

. The sample application is also explained in details in Chapter 1 of the ObjectDB Manual, but if you prefer to start by running a live sample application in your IDE, you should be able to follow this tutorial

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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