Misplaced Pages

Apache OpenJPA

Developer(s)	Apache Software Foundation
Stable release	3.2.2 / March 16, 2022; 2 years ago (2022-03-16)
Repository	OpenJPA Repository
Written in	Java
Operating system	Cross-platform
Platform	Java
Size	21.8 MB (archived binary) / 11.7 MB (archived source)
Type	Object-relational mapping
License	Apache License 2.0
Website	openjpa.apache.org

OpenJPA is an open source implementation of the Java Persistence API specification. It is an object-relational mapping (ORM) solution for the Java language, which simplifies storing objects in databases. It is open-source software distributed under the Apache License 2.0.

History

Kodo, a Java Data Objects implementation, was originally developed by SolarMetric, Inc in 2001. BEA Systems acquired SolarMetric in 2005, where Kodo was expanded to be an implementation of both the JDO (JSR 12) and JPA (JSR 220) specifications. In 2006, BEA donated a large part of the Kodo source code to the Apache Software Foundation under the name OpenJPA. The donated source code will be the core persistence engine of BEA Weblogic Server, IBM WebSphere, and the Geronimo Application Server. In May 2007, OpenJPA graduated from the incubator to a top-level project and also passed Sun's Technology Compatibility Kit compliant with the Java Persistence API.

See also

• Persistence
• EclipseLink
• Hibernate
• ActiveJPA
• NoSQL datastores like Infinispan

References

1. "Apache OpenJPA Downloads". 11 August 2010. Retrieved 27 September 2022.
2. Sun JCP JSR-12 Java Data Objects JDO Specification
3. Sun JCP JSR-220 Enterprise JavaBeansTM 3.0
4. Both BEA Weblogic Server and IBM WebSphere adopted OpenJPA for java persistence framework.
5. OpenJPA Project Incubation Status

External links

• Official website
• Kodo Towards an Open Source EJB 3.0 Persistence Engine by Jon Mountjoy
• Leveraging OpenJPA with WebSphere Application Server V6.1
• An update on Java Persistence API 2.0 by Kevin Sutter
• Interview with Patrick Linskey discusses OpenJPA and the JPA specification on August 23, 2007

v t e Java (software platform)
Platforms	JVM Java ME (Micro) Java SE (Standard) Jakarta EE (Enterprise) Java Card Android SDK GraalVM
Oracle technologies	Squawk Java Development Kit OpenJDK Java virtual machine JavaFX Maxine VM
Platform technologies	Servlets MIDlets JSP JSF Web Start (JNLP) Pack200 Modules applets
Major third-party technologies	Eclipse GNU Classpath Hibernate Spring GWT IcedTea Jazelle Struts TopLink WildFly blackdown harmony
History	Java version history Java Community Process Sun Microsystems Free Java implementations
JVM languages	Java BeanShell Clojure Groovy JRuby Jython Kotlin Processing Rhino Scala Oxygene
Community	Conferences JavaOne Devoxx Organizations Apache Software Foundation Eclipse Foundation Java Community Process Oracle Corporation Sun Microsystems, Sun Microsystems Laboratories People James Gosling Arthur van Hoff Urs Hölzle Patrick Naughton
Category   Computer programming portal

• Apache Software Foundation projects
• Object–relational mapping
• Java enterprise platform