持久層框架 DataNucleus Access Platform 3.0.7

DataNucleus Access Platform 是一個兼容各種標準的 Java 數據持久化框架，完全兼容 JDO1, JDO2, JDO2.1, JDO2.2, JDO2.3, 和 JPA1 等 Java 標準。提供一個基于 REST 的API。通過它可以訪問所有常見的數據庫服務器，還包括 LDAP, NeoDatis, JSON, Excel/ODF spreadsheets, XML, BigTable, 和 HADOOP 數據庫等.

DataNucleus 3.0.7 主要改進內容包括：

• Fix to use of persistence property "datanucleus.storeManagerType"
• JPA : Support for JPA2.1 Type Convertors
• JPA : Fix to EM.find to also work for datastore-identity
• JPA : Update to detection of 1-N UNI FK relations to avoid the need for JPA 'level' persistence property
• JPA : Add numeric conversion capabilities to EM.find key argument.
• JDO : Fix to duplicate close of query results when using Extent on non-RDBMS datastores
• Fix to load of metadata for persistence unit when persistable inner classes present
• Fix to instantiation of object from identity when root class is abstract and using single-field id
• RDBMS : Fix to JPQL "INDEX" SQL generation for join table case
• JSON, HBase, MongoDB, Excel, ODF, RDBMS : fix to version of core usable to prohibit v3.1

下載地址：DataNucleus community site.