DataNucleus Access Platform 是一个兼容各种标准的 Java 数据持久化框架，兼容 JDO1, JDO2, JDO2.1, JDO2.2, JDO2.3, JPA1, JPA2 等 Java 标准。提供一个基于 REST 的API。通过它可以访问所有常见的数据库服务器，还包括 LDAP, NeoDatis, JSON, Excel/ODF spreadsheets, XML, BigTable, 和 HADOOP 数据库等.
DataNucleus Access Platform 3.2.7 改进记录：
Support for respecting the fetch plan when querying candidates with complete-table inheritance on RDBMS was added.
Support for processing query order in-datastore with MongoDB was added.
JPA problems in MetaModel and query range were fixed, and support for multifield join syntax was added
官方首页：http://www.datanucleus.org/products/accessplatform/
免费下载：http://sourceforge.net/projects/datanucleus/
来自:开源中国社区
