JPA 持久层框架 DataNucleus Access Platform 3.0.3 发布

     DataNucleus Access Platform 是一个兼容各种标准的 Java 数据持久化框架，完全兼容 JDO1, JDO2, JDO2.1, JDO2.2, JDO2.3, 和 JPA1 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.    <img title="datanucleus.gif" border="0" alt="datanucleus.gif" align="right" src="https://simg.open-open.com/show/8a3a68d037b93b7696194f099258ecbd.gif" width="90" height="90" />    <br />    <p><strong>发布日志:</strong></p>    <p>1. 为JDO添加bean validation (javax.validation JSR303)支持。<br /> 2. 重写L2缓存处理过程。<br /> 3. 修复各种OSGi MANIFESTs。<br /> 4. Metadata<span class="truncate_more"> relation information for reference fields has been fixed. <br /> 5. Support for multitenancy via discriminator for MongoDB has been added. <br /> 6. Use of "validation-mode" of a persistence-unit has been fixed. <br /> 7. Various other bugs have been fixed.<br /> <br /> 项目地址：<a href="/misc/goto?guid=4958187675208992889" target="_blank">http://www.datanucleus.org/products/accessplatform/<br /> </a><br /> </span></p>    <p><img title="Hadoop" border="0" alt="Hadoop" src="https://simg.open-open.com/show/00dad2633094e5e4cb6c952ac32e81fe.jpg" width="300" height="71" /></p>    <p>Hadoop并不仅仅是一个用于存储的分布式文件系统，而是设计用来在由通用计算设备组成的大型集群上执行分布式应用的框架。</p>