DataNucleus Access Platform 1.0 M3 Released

July 6th 2008- DataNucleus Access Platform 1.0 ("Faraday") Milestone 3 is released. DataNucleus Access Platform provides persistence and retrieval of Java objects to/from a wide range of datastores including RDBMS, db4o, LDAP, XML, Excel, NeoDatis ODB, and JSON. Version 1.0 Milestone 3 includes the following changes

  • Rewritten Level 2 caching, allowing full control over which classes are cached and which fields of which classes are cached. Fixed bugs relating to deleted objects previously being cached, and caching of SCO fields
  • Rewritten JPQL compiler for use by all datastores.
  • Addition of an in-memory JPQL evaluator, supporting basic JPQL syntax so far.
  • Support for JDO2.2 "ReadOnly"
  • Change in-memory evaluation of JDOQL/JPQL queries to allow evaluation of specific components of the query (rather than the whole query)
  • Support for in-memory JDOQL/JPQL evaluation of "/", "%", "<", ">", "<=", ">=", etc
  • Support for in-memory JDOQL evaluation of all common methods (String.matches, String.toUpperCase, etc)
  • Bug fix to List.remove(int) when using optimistic transaction
  • Bug fix to in-memory JDOQL evaluation of grouping/result clauses
  • Support for JPQL querying of db4o datastores
  • Support for JPQL querying of NeoDatis ODB datastores
  • Support for JPQL querying of XML documents
  • Support for JPQL querying of Excel documents
  • Support for JPQL querying of LDAP datastores
  • Support for JPQL querying of JSON datastores
  • Removed original JDOQL querying for db4o - now replaced by generic process, with inbuilt support for more JDOQL syntax.
  • Support for persistence of wider range of Object types to Excel datastores, using new generic "String-based" persistence
  • Optimisation of location of an object in Excel datastores resulting in reduced object instantiation
  • Support for connection-pooling of LDAP connections (contrib Stefan Seelmann)
  • Support for JDOQL querying of NeoDatis ODB datastores
  • Support for multiple levels of "xpath" on XML datastores
  • Bug fix to GROUP BY on RDBMS datastores when the query has multiple components of a UNION
  • Bug fix on RDBMS datastores to re-enable creation of constraints
  • Bug fix on RDBMS datastores when using subclass-table inheritance and single subclass

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