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Title: DataNucleus  
Author: World Heritage Encyclopedia
Language: English
Subject: Java Data Objects, Enterprise application integration, Apache OpenEJB, Apache Flex, OSGi
Publisher: World Heritage Encyclopedia


Developer(s) DataNucleus Team
Stable release 4.0.4 / November 14, 2014 (2014-11-14)
Development status Active
Written in Java
Operating system Cross-platform
Platform Java Virtual Machine
Type ORM
License Apache License 2
Website .org.datanucleuswww

DataNucleus (formerly known as Java Persistent Objects JPOX) is an open source project (under the Apache 2 license) which provides software products around data management in Java. The DataNucleus project started in 2008[1] (the JPOX project started in 2003 and was relaunched as DataNucleus in 2008 with broader scope).

DataNucleus Access Platform is a fully compliant implementation of the Java Data Objects (JDO) 1.0, 2.0, 2.1, 2.2, 3.0, 3.1 specifications (JSR 0012,[2] JSR 0243[3]) and the Java Persistence API 1.0, 2.0, 2.1 specifications (JSR 0220,[4] JSR 0303,[5] JSR 0338[6]), providing transparent persistence of Java objects. It supports persistence to the widest range of datastores of any Java persistence software, supporting all of the main object-relational mapping (ORM) patterns, allows querying using either JDOQL, JPQL or SQL, and comes with its own byte-code enhancer. It allows persistence to relational datastores (RDBMS), object-based datastores (db4o, NeoDatis ODB), document-based storage (XML, Excel, OpenDocument spreadsheets), web-based storage (JSON, Google Storage, Amazon Simple Storage Service), map-based datastores (HBase, Google's BigTable, Apache Cassandra), graph-based datastores (Neo4j), document stores (MongoDB) as well as other types of datastores (e.g. LDAP). Its plugins are OSGi-compliant so can be used equally in an OSGi environment.

DataNucleus Access Platform is also utilised by the persistence layer behind Google App Engine for Java,[7] and VMForce (cloud offering from and VMWare).[8] Please note that these uses of DataNucleus are not part of the DataNucleus project, and so are not supported by it.

See also

  • JFire - ERP using DataNucleus for persistence


  1. ^ "DataNucleus launched". InfoQ. May 1, 2008. Retrieved May 1, 2008. 
  2. ^ Java JCP JSR-0012 JDO 1.0 Specification
  3. ^ Java JCP JSR-0243 JDO 2.0 Specification
  4. ^ Java JCP JSR-0220 JPA 1.0 Specification
  5. ^ Java JCP JSR-0303 JPA 2.0 Specification
  6. ^ Java JCP JSR-0338 JPA 2.1 Specification
  7. ^ "Google AppEngine for Java released". DataNucleus. Apr 7, 2009. Retrieved Apr 7, 2009. 
  8. ^ "VMForce using DataNucleus". DataNucleus. Oct 22, 2010. Retrieved Oct 22, 2010. 

External links

  • DataNucleus - Open Source Java data management software
  • SourceForge - project page for DataNucleus
  • GitHub - source code repository projects for DataNucleus
  • Cumulus4J - Encrypted persistence using DataNucleus
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