DataNucleus Access Platform 3.1.2 ("Kepler") 最近发布。
DataNucleus Access Platform是一个基于JAVA的数据持久化框架，类似于Hibernate、EclipseLink之类的框架，支持多种关系数据库系统，以及Neo4j、MongoDB等NoSQL数据库，还有LDAP、XML和Excel等。
3.1.2版主要的改进包括：
Fix to lookup of object inheritance level in some corner-case situations
Provide TypeConverters for persisting Serializable object as byte[] or base-64 encoded string
Fix clone of JPQL query so that "from" is cloned
Log which fields (numbers) are being attached
Complete TODO in FetchPlan code for dynamic fetch groups from PM
JDO : Fix bug in map key/value metadata handling introduced in 3.1.1
JPA : Fix bug in use of Query.getParameters when used by Spring Data JPA
XML : Fix to class loading in relation lookup
Neo4j : Fix to some JPQL queries causing exception
Neo4j : Fix to lazy load iterator for empty result condition
Neo4j : Fix to stackoverflow with bidirectional relation retrieval
Neo4j : Support persistence of arrays
Neo4j : Support persistence of serialised fields
Neo4j : Support "increment" value generator
MongoDB : Support for capped DB collections (size limit on objects of a type)
MongoDB : Fix to replica-set URL string parsing
RDBMS : Extend support for stored procedure parameters to other types
Various other bug fixes and minor improvements
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