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DataNucleus Access Platform 3.0.0 Released

Aug 1st 2011 - DataNucleus Access Platform 3.0.0 ("Newton") is released. DataNucleus Access Platform provides persistence and retrieval of Java objects to/from a wide range of datastores including RDBMS, db4o, LDAP, XML, and Excel. Version 3.0.0 Release includes the following changes over 3.0 M6

  • JDO : Add ability to hook into transaction events via listener
  • JPA : Fix problem with DetachAllOnRollback not being set
  • JPA : Fix fetch flag observance when read from XML
  • JPA : Fix problem with singleton EMF pattern
  • Major changes to java type management to support specification of generics by configuration, and to give major speed up in type information access
  • Move SCO container backing store implementations into RDBMS plugin
  • Fix use of version metadata with respect to inheritance of classes, affecting various store plugins
  • Fix problems with non-transactional "commit" and pm/em close process to discard objects that don't need any processing
  • Fix all operations that involve schema updates to respect the "autoCreate" flags (so they now can correctly prevent any schema changes)
  • Fix to queries using result class, to prevent NPE when selecting candidate and defining result class as candidate
  • MongoDB : fix to use of IDENTITY for datastore id
  • MongoDB : fix to querying with inheritance
  • MongoDB : added extra handling of MongoDB numeric types
  • Maven : fix to setting of the CLASSPATH in some situations

Version 3.0 includes the following major changes over 2.2

  • JDO, JPA, REST APIs split out into separate plugins with JPA no longer piggybacking on JDO.
  • Major restructring to provide initial support for Data Federation
  • Ability to specify classes as "read-only"
  • Major changes with non-transactional operations, providing atomic persistence/delete
  • SchemaTool : added support for ODF, Excel, MongoDB, HBase
  • MongoDB : New plugin for MongoDB document store, providing quite complete feature set
  • HBase : Much enhanced support for HBase map store
  • RDBMS : Added support for SQLite
  • ODF : support added for embedded fields, maps, value generation, query of interfaces
  • Excel : support added for maps, value generation, query of interfaces
  • NeoDatis : support for unique constraints
  • Cache : added support for Xmemcached, and enhanced support for EHCache
  • JDO : Support for "complete-table"
  • JDO : Support for bulk update/delete via typesafe API
  • JPA : support for singleton EMF pattern
  • JPA : support for merge of transient object when it has identity fields mapping to persistent object
  • Now works with JBoss 6+
  • Many bug fixes, and minor feature additions.

This release is downloadable under an Apache 2 license from the DataNucleus community site.