DataNucleus Access Platform is a
standards-compliant Java persistence product. It
is fully compliant with the JDO1, JDO2, JDO2.1,
and JPA1 Java standards. It also complies with the
OGC Simple Feature Specification for persistence
of geospatial Java types. It allows access to all
popular RDBMSs available today, together with
db4o, LDAP, NeoDatis, JSON, Excel documents, and
XML databases.
License: The Apache License 2.0
Changes:
JDO persistence has been migrated to the
forthcoming JDO2.2 standard. Support for JDO2.2
dynamic fetch groups has been added (this was
previously a vendor extension). Generic query
compilation support for chained method invocations
was added. Support for dynamic RDBMS schema
upgrades for 1-1 interface fields was added.
Support for the use of datastore identity with
Excel datastores was added. Support for cascade
delete with NeoDatis datastores was added. A bug
was fixed in cascade delete for db4o datastores. A
bug was fixed for persistence/retrieval of object
wrapper field values with Excel datastores.