Java ORM框架：Hibernate 4.1.8 版本發布

jopen 12年前發布 | 23K 次閱讀 Hibernate

 Hibernate ORM - 4.1.8 發布日志：

Bug修復情況

  • [HHH-1283] - ScrollableResults JoinFetch don't set child collection correctly　after the second parent object

  • [HHH-1570] - criteria-api: filtering by key-many-to-one causes invalid sql

  • [HHH-4459] - Query with Composite Primary Key parameter crashes when query cache is on

  • [HHH-4635] - Oracle ORA-24816 inserting and updating data for entities containg LOB attributes

  • [HHH-5209] - org.hibernate.hql.ast.QuerySyntaxException when running a JPQL query with a MEMBER OF on an @ElementCollection

  • [HHH-5267] - NPE when updating a detached entity with a one-to-one association changed to null that is mapped with delete-orphan

  • [HHH-5376] - Tests contain invalid SQL

  • [HHH-5836] - Mapping collection of entities with same name and notnull constraints from two different entities results in duplicate property mapping of Backref

  • [HHH-6043] - PostLoad method invoked before collection initialised

  • [HHH-6349] - AuditJoinTable rows missing when detached entities with collections are merged into the persistence context

  • [HHH-6655] - trim function on DB2 is broken

  • [HHH-6972] - Support PostgreSQL and Oracle LOBs

  • [HHH-7309] - Natural-id not cached in shared cache after insert

  • [HHH-7359] - Trace logging causes numerous test errors

  • [HHH-7487] - org.hibernate.type.EnumType incorrectly logs binded values

  • [HHH-7541] - When using HSQLDB, inserting any CLOB value larger than 16Mb always fails with an exception

  • [HHH-7569] - Correct test-only failures in hibernate-core-master-matrix CI job

  • [HHH-7575] - Hibernate Getting Started Guide refers to incorrect tutorial directory for annotations tutoral

  • [HHH-7577] - Dialect's supportsNotNullUnique not working when false

  • [HHH-7578] - Sybase does not support "unique not null"

  • [HHH-7579] - Oracle does not support "unique not null"

  • [HHH-7584] - Sybase dialects attempting to use BLOB types

  • [HHH-7586] - Re-architect Type or TypeFactory dynamic descriptors

  • [HHH-7603] - NullPointerException being thrown instead of LazyInitializationException with collection reattach change

  • [HHH-7640] - Enhancements to speed up and reduce mem consumption for Infinispan 2LC

  • [HHH-7644] - Correct memory leak introduced by HHH-7557

  • [HHH-7669] - JtaTransaction test fails on Oracle RAC

  • [HHH-7674] - DB locks not cleared on LazyLoadingTest#testLazyCollectionLoadingWithClearedSession

  • [HHH-7690] - Fix for @ManyToOne using @embeddedid with @ManyToOne inside

  • [HHH-7692] - Postgres 9 and 9.1 use 8.1 dialect instead of 8.2 by default

  • [HHH-7693] - SQL Server 2012 gets the SQL Server 2000 dialect by default

  • [HHH-7711] - SchemaExport doesn't create file with script if both parameters exportToDatabase and scriptToConsole are false

  • [HHH-7721] - SQLFunctionRegistry findSQLFunction does not honor case sensitivity

  • [HHH-7724] - JpaLargeBlobTest failing on multiple DBs

  • [HHH-7730] - SchemaExportManagedConnectionTest#testGenerateDdlToFile failing on Oracle & Sybase

  • [HHH-7732] - QueryTest#testMemberOfSyntax failing on Oracle

  • [HHH-7733] - NativeSQLQueriesTest failing on Postgres

  • [HHH-7734] - SerializableTypeTest#testNewSerializableType failing for Oracle 11G R1
    • </ul>

    改進情況：

    • [HHH-1775] - 集合批量獲取（collection batch fetching）

    • [HHH-6452] - PostgreSQL Dialect 沒有完全實現NOWAIT鎖

    • [HHH-6682] - 為 Oracle Dialect添加 oracle "bitand" 函數支持

    • [HHH-7631] - 改進UpdateTimestampsCache的性能

    • [HHH-7633] - 改進IdentityMap的性能

    • [HHH-7683] - 優化AbstractLazyInitializer.prepareForPossibleSpecialSpecjInitialization()的性能。

    • [HHH-7698] - 更高效 LOB 創建

    • [HHH-7725] - 使處理大批量HQL多表操作更可插拔

    • [HHH-7728] - 在table類中添加equals方法
      • </ul>

      補丁

      • [HHH-6361] - Collection events may contain wrong stored snapshot after merging a detached entity into the persistencecontext
        • </ul>

        Task

        • [HHH-7710] - Align Infinispan 5.x versions in 2LC implementation in 4.1.x branch
          • </ul>

          Hibernate是一個Java語言下的對象關系映射解決工具。它的工作原理是通過文件（一般有兩種：xml文件和properties文件）把值對象和數據庫表之間建立起一個映射關系。這樣，我們只需要通過操作這些值對象和Hibernate提供的一些基本類，就可以達到使用數據庫的目的。例如，使用Hibernate的查詢，可以直接返回包含某個值對象的列表（List），而不必向傳統的JDBC訪問方式一樣把結果集的數據逐個裝載到一個值對象中，為編碼工作節約了大量的時間。Hibernate提供的HQL是一種類SQL語言，它和EJBQL一樣都是提供對象化的數據庫查詢方式，但HQL在功能和使用方式上都非常接近于標準的SQL。

          二、Hibernate與JDBC的區別

          Hibernate與JDBC的主要區別如下：

          1、Hibernate是JDBC的輕量級的對象封裝，它是一個獨立的對象持久層框架，和App Server，和EJB沒有什么必然的聯系。Hibernate可以用在任何JDBC可以使用的場合，從某種意義上來說，Hibernate在任何場合下取代JDBC。

          2、Hibernate是一個和JDBC密切關聯的框架，所以Hibernate的兼容性和JDBC驅動，和數據庫都有一定的關系，但是和使用它的Java程序，和App Server沒有任何關系，也不存在兼容性問題。

          3、Hibernate是做為JDBC的替代者出現的，不能用來直接和Entity Bean做對比。

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