休眠：数据对象与注解动态表名 [英] Hibernate: Data Object with a dynamic table name by Annotations

问题描述

我有一个数据类为休眠相关联的表;想象实体的人的是这样的：

I have a Data Class for Hibernate associated to a table; imagine the Entity Person like this:

 @Entity
 @org.hibernate.annotations.Proxy(lazy=false)
 @Table(name="Person", schema="MySchema")
 @Inheritance(strategy=InheritanceType.SINGLE_TABLE)
 public class ProfileData implements Serializable {

    private static final long serialVersionUID = -844564646821609090L;

    public PersonData() {
    }

    @Column(name="idPerson", nullable=false, unique=true)   
    @Id 
    ...

我需要通过多年的该表的创建历史表：Person2010，Person2011，Person2012 ...是否有可能无需创建新的数据对象？也许一个参数...？我不知道。

I need to create historic tables by years of this table: Person2010, Person2011, Person2012... Is it possible without creating new Data Objects? Maybe by a parameter...? I don´t know.

实体类是相同的，不断变化的表名和构造函数。

The Entity class is the same, changing the table name and the constructor.

推荐答案

另外一个建筑，更complez而优雅的：

Another one Architecture, more complez but elegant:

是，您可以用更改表名的 NamingStrategies 的：

YES, You can change the table names using NamingStrategies:

public class MyNamingStrategy extends DefaultNamingStrategy {
   ...
   @Override
   public  String tableName(String tableName) {
      return tableName+yearSuffixTable;
   }
   ...
}

而且，当你想使用_year表，则必须建立与Hibernate会话重写RHE表名称：

And, when you wanna to use the _year tables, you must to create a session with Hibernate that override rhe table names:

  SessionFactory sessionFactory;
  Configuration config = new AnnotationConfiguration()
                         .configure("hibernate.cfg.xml")
                         .setNamingStrategy( new MyNamingStrategy () );
  sessionFactory = config.buildSessionFactory();
  session = sessionFactory.openSession();

有关我的建筑我在今年创建一个会话，并将其存储到应用的地图进行访问时，我需要它。

For my architecture I create a session by year and store it into Application map for access when I need it.

感谢。

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