发布于 2015-11-19 00:32:50 | 473 次阅读 | 评论: 0 | 来源: 网友投递
Hibernate 开源对象关系映射框架 ORM
Hibernate是一个开放源代码的对象关系映射框架，它对JDBC进行了非常轻量级的对象封装，使得Java程序员可以随心所欲的使用对象编程思维来操纵数据库。 Hibernate可以应用在任何使用JDBC的场合，既可以在Java的客户端程序使用，也可以在Servlet/JSP的Web应用中使用，最具革命意义的是，Hibernate可以在应用EJB的J2EE架构中取代CMP，完成数据持久化的重任。
Hibernate ORM 5.0 第四个 bug 修复版发布，该版本总共修复52个issues，更新如下：
** Bug
* [HHH-1689] - Support subqueries in HQL as CASE statement alternatives
* [HHH-1706] - Named parameters ignored when single apostrophe encountered within an SQL comment
* [HHH-5764] - AssertionFailure: Unexpected nested component on the referenced entity when mapping a @MapsId
* [HHH-5946] - Wrong SQL generated when composites are compared using not-equal operator
* [HHH-5948] - Trying to get a PluralAttributePath from a @MappedSuperclass throws org.hibernate.MappingException: Unknown collection role
* [HHH-6475] - Metamodel check fails when subclasses are used
* [HHH-6672] - Remove UNION support from 5.x grammars
* [HHH-8435] - @Lob + @Nationalized results in NCLOB on SQLServer2005+ rather than NVARCHAR(MAX)
* [HHH-8712] - Hibernate startup error "HHH015011: Unable to locate static metamodel field"
* [HHH-8775] - Exception when mapping a class more than once
* [HHH-8802] - Class cast exception thrown when trying to access Embedded type relationship path in Tuple
* [HHH-8847] - Exception thrown when trying to select a treated property
* [HHH-9140] - Error in CollectionCacheInvalidator when hibernate.cache.auto_evict_collection_cache is enabled
* [HHH-9160] - javax.persistence.Query#getParameterValue(String) returns the ParameterRegistration not the parameter value
* [HHH-9195] - Adding an entity at a given index in a list annotated with OrderColumn adds the entity at the end
* [HHH-9230] - NullPointer when combining JPQL query with in clause and @NamedEntityGraph
* [HHH-9475] - Cannot mix @MapKey with @Convert
* [HHH-9529] - Enhancer indiscriminately re-writes field accesses
* [HHH-9710] - IllegalArgumentException passing null as parameter value with explicit TemporalType
* [HHH-9794] - Replace string with preceding comma is not replacing string as required
* [HHH-10112] - Unable to enhance persistent attribute with declared targetEntity
* [HHH-10145] - Include maven dependencies in enhancement classpath
* [HHH-10146] - Compiled classes not included in enhancer class path
* [HHH-10163] - QueryResultsRegion is not invalidated from evictAll()
* [HHH-10181] - CacheableFileXmlSource.doBind uses obsolete .bin file
* [HHH-10203] - Overriden UniqueDelegate.getTableCreationUniqueConstraintsFragment not called anymore in SchemaExport
* [HHH-10208] - Index and unique-key constraints not properly handled with implicit columns in hbm.xml binding
* [HHH-10219] - Infinite loop generating IDs if using negative increment
* [HHH-10242] - Deal with HCANN poor handling of multiple properties by matching stem name
* [HHH-10247] - Hibernate ignores foreign-key attribute name in hbm <many-to-many>
* [HHH-10251] - Memory Leak when using Reference Cached, bytecode enhanced Immutable Entities
* [HHH-10259] - ForUpdateFragment.toFragmentString() does not check if aliases are defined when lockOptions are not null
* [HHH-10264] - hibernate.cache.auto_evict_collection_cache problems
* [HHH-10270] - Hibernate User Guide transactions chapter examples are not properly rendered
* [HHH-10273] - Reserved word used for database object in testsuite
* [HHH-10274] - org.hibernate.id.SequenceValueExtractor does not work for DB2, Oracle, or SQL Server
* [HHH-10275] - Inverse foreign key for many-to-many set is nullable
* [HHH-10288] - Temporary table support is broken using PostgresPlusDialect
* [HHH-10289] - CPU performance regression in StatefulPersistenceContext.addEntry()
* [HHH-10293] - Schema Update - Single table Inheritance with bi-directional OneToMany referencing superclass fails
* [HHH-10295] - Derived entity ID columns are nullable when @JoinColumns is overriden
** 新特性
* [HHH-10222] - AttributeConverter not applied to @ElementCollection
** Task
* [HHH-10279] - Memory usage improvements
** 提升
* [HHH-10101] - Implement nonstrict-read-write mode in Infinispan 2LC
* [HHH-10161] - Allow parameter type for null value to be specified using javax.persistence.Parameter#getParameterType()
* [HHH-10178] - Make JTA a provided (non-transitive) dependency
* [HHH-10202] - Delay resolving TypeScopeImpl#factory after deserialization until resolveFactory() is called.
* [HHH-10248] - map removed TransactionFactory classes
* [HHH-10271] - Improve performance of EventListenerRegistry
* [HHH-10272] - Make pending-puts cache template configurable
* [HHH-10297] - Cache HashMap in AbstractRowReader instead of re-creating for each row that is read
** 弃用
* [HHH-10281] - More formally deprecate the legacy bytecode enhancement code
详情请看：changelog
下载地址：
http://hibernate.org/orm/downloads/
Hibernate是一个开放源代码的对象关系映射框架，它对JDBC进行了非常轻量级的对象封装，使得Java程序员可以随心所欲的使用对象编程思维来操纵数据库。 Hibernate可以应用在任何使用JDBC的场合，既可以在Java的客户端程序使用，也可以在Servlet/JSP的Web应用中使用，最具革命意义的是，Hibernate可以在应用EJB的J2EE架构中取代CMP，完成数据持久化的重任。