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JPA Query Structure (JPQL / Criteria)

addition, string literals are also case sensitive (e.g. "ORM" and "orm" are different values). A Minimal
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JPA Reference (JavaDoc)

This reference contains the API documentation (similar to JavaDoc) of the Java Persistence API (JPA) 2.0. The content is derived from the original JPA documentation (in the EclipseLink JPA 2 RI) with some additions and notes. The four most basic JPA types are: All the other JPA types are organized
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Retrieving JPA Entity Objects

of additional entity objects. By default, a retrieval operation is automatically cascaded
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JPA / JDO Class Enhancer

addition, a class loader for loading classes for enhancement can be specified as a second argument: com
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Privacy Policy

certain circumstances to provide Us additional Personal Data that you are allowed to share
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What are the main benefits of using ObjectDB?

multiple values (even for a simple data structure such as a collection of strings). In addition
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Database Schema Evolution

Modifications to entity classes that do not change their persistent field definitions (their schema) are transparent to ObjectDB. This includes adding, removing and modifying constructors, methods and non persistent fields. However, additions, deletions and modifications to the persistent fields
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Java EE Web Tutorial

. This tutorial is available in the following versions: In addition the demonstrated application is available as a Maven project:
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Step 4: Run the Application

will use the existing database file to store an additional 1000 objects. You can view the content
1

JPA Web Application Tutorial

. This tutorial is available in the following versions: In addition the demonstrated application is available as a Maven project:

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.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support