DataNucleus Access Platform is astandards-compliant Java persistence product. Itis fully compliant with the JDO1, JDO2, JDO2.1,and JPA1 Java standards. It also complies with theOGC Simple Feature Specification for persistenceof geospatial Java types. It allows access to allpopular RDBMSs available today, together withdb4o, LDAP, Excel documents, and XML databases.License: The Apache License 2.0Changes:
The level2 caching process has been rewritten to allow full control. Support for JDO 2.2 "read-only" has been added. JPQL query language support has been added for all datastores. In-memory evaluation of JDOQL queries has been extended to cope with more syntax. Support for persistence of a wider range of field types has been added for XML and Excel datastores. Support for multiple levels of "xpath" has been added for XML datastores. JDOQL query language support has been added for NeoDatis datastores. Bugfixes have been made for RDBMS constraints.