DataNucleus Access Platform 3.2.0 Released

March 11th 2013- DataNucleus Access Platform 3.2.0 ("Copernicus") is released. DataNucleus Access Platform provides persistence and retrieval of Java objects to/from a wide range of datastores including RDBMS, MongoDB, LDAP, XML, and Excel. Version 3.2.0 Release includes the following changes over 3.2 M4

• Fix to in-memory evaluation when using a variable that has no possible value
• Move operation queue for SCOs to ExecutionContext so that it can control the whole flush process
• Disable ObjectProvider pooling since it currently causes issues when in a highly multithreaded environment
• Add check on attempted persistence of final fields
• JPA : allow for user overriding a JNDI datasource with a URL-based datasource
• RDBMS : fix to bulk update when setting fields to NULL
• RDBMS : Cater for fields of a type that have a TypeConverter but no Mapping defined, falling back to the TypeConverter
• Neo4j : Support for bulk delete
• MongoDB : Support for bulk delete
• HBase : Support for bulk delete

Version 3.2 includes the following major changes over 3.1

• The enhancer and ASM are now merged into datanucleus-core
• L2 caching of embedded/serialised fields now defaults to ON
• ExecutionContext objects are now pooled, together with various other improvements for performance
• Enhancer now includes an option to enhance classes as detachable regardless of metadata
• Neo4j : now uses a single connection per PM/EM
• Neo4j : now supports bulk delete
• MongoDB : now uses a single connection per PM/EM
• MongoDB : now supports bulk delete
• HBase : supports various extensions for bloom filters, compression, in-memory etc (Nicolas Seyvet)
• HBase : now supports bulk delete
• RDBMS : support added for the Virtuoso database (Emmanuel Poitier)
• RDBMS : support added for Tomcat connection pool (Marshall Reeske)
• OSGi : improved deployability due to dependency version restrictions
• JPA : validated to work with JBoss 7 (thanks to Nicolas Seyvet and Scott Marlow)
• JPA : access of non-detached field will result in IllegalAccessException instead of the previous JDO exception
• JPA : support for JPA2.1 FROM "ON" clauses
• JPA : support for bulk usage of persist(), remove(), merge() and detach() (pass in Collection or array of entities)
• JPA : support for JPA2.1 "Generate Schema" feature
• If a type is supported to be persistent then it defaults to persistent now (no need to mark all non-standard typed fields as persistent).
• Add ability to disable the L2 cache on a PM/EM-basis where the PMF/EMF has it enabled.
• Cache : provides support for javax.cache v0.61
• Many bug fixes, and minor feature additions.

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