OpenJPA 2.1.1 发布，Java EE持久化数据管理框架

OpenJPA 2.1.1 发布了！

OpenJPA 是 Apache 组织提供的开源项目，它实现了 EJB 3.0 中的 JPA 标准，为开发者提供功能强大、使用简单的持久化数据管理框架。OpenJPA 封装了和关系型数据库交互的操作，让开发者把注意力集中在编写业务逻辑上。OpenJPA 可以作为独立的持久层框架发挥作用，也可以轻松的与其它 Java EE 应用框架或者符合 EJB 3.0 标准的容器集成。除了对 JPA 标准的支持之外，OpenJPA 还提供了非常多的特性和工具支持让企业应用开发变得更加简单，减少开发者的工作量，包括允许数据远程传输/离线处理、数据库/对象视图统一工具、使用缓存（Cache）提升企业应用效率等。

该版本的改进：

• 修改了unenhanced类的错误信息。
• 修改了localize.property中的消息。
• DB2 V9.7 changed the default behavior concerning blocking behavior with isolation levels greater then read uncommitted。
• 在DB2上运行时，跳过异常文本。
• 为非连续的位置参数提供可选的支持。
• 允许分离时代理维持原状。
• 提高StateManagerImpl受保护成员的扩展性。

Bug修复列表:

• [OPENJPA-940] - Using table-generator in XML descriptor results in ClassCastException
• [OPENJPA-1657] - Postgres connection throws NPE with null properties
• [OPENJPA-1725] - Schemaname wrongly included in DBDictionary.checkNameLength after Tablename correctly truncated
• [OPENJPA-1787] - Bean validation fails merging a new entity
• [OPENJPA-1845] - the prepared query cache doesn't currently work correclty with 'SELECT IN' statements
• [OPENJPA-1884] - CacheStoreMode.REFRESH is not recognized for entity manager refresh operation
• [OPENJPA-1899] - Evict from L2 of a object causes secondary objects to never be loaded in graph
• [OPENJPA-1939] - index identifier max length for DB2 v9 is 128.
• [OPENJPA-1940] - ReverseMapping tool does not find primary keys with Oracle
• [OPENJPA-1943] - Query timeout hint not honored consistently when pessimistic lock is issued to database requires multi-statements locking scheme
• [OPENJPA-1944] - Extra select statements executed when version column is null.
• [OPENJPA-1957] - XML overriding column names for ArrayList attributes causes exception.
• [OPENJPA-1958] - IndexOutOfBoundsException in BatchingPreparedStatementManagerImpl
• [OPENJPA-1959] - RuntimeExceptionTranslator should be transient in DelegatingQuery
• [OPENJPA-1965] - ClassCastException when using JAXB and
• MetaModel annotation processor
• [OPENJPA-1968] - SQLServerDictionery not using DATETIME2 for jdbc driver other than MS JDBC driver
• [OPENJPA-1969] - SQLServer / DataDirect SQLCode=HYT00 not handled
• [OPENJPA-1985] - ClassCastException in max(Timestamp) function on PostgreSQL
• [OPENJPA-1986] - Extra queries being generated when cascading a persist
• [OPENJPA-1989] - *ToOne relationships specified as LAZY in xml aren't honored
• [OPENJPA-1996] - OpenJPA Samples fail on MacOS X

官网地址：http://openjpa.apache.org/

下载地址：http://openjpa.apache.org/downloads.html