来自位于不同数据库中的两个不同表的Fecthing数据，并且具有主键和外键的关系

Question

我在mysql数据库中使用两个数据库让我们说 DB1 和 DB2 我在单独的.cfg.xml文件中配置了两个数据库现在DB1中的一些表是链接到 DB2 中的表，例如DB1.Branch.Branchid是主键，引用DB2.OfficeAddress.Branchidf的前导键在HQL查询中我想使用以下内容访问DB1.Branch的详细信息DB@.Lesseemaster.Branchid执行查询哪个数据库sessionfactory需要使用？完全混淆我没有得到任何参考，我们可以映射位于Hibernate不同数据库中的相关表中的数据。

  

hibernate.cgf.xml

    <hibernate-configuration>           
            <session-factory >  
   <property name="hibernate.hbm2ddl.auto">create</property>
                <property name="dialect">org.hibernate.dialect.MySQLDialect</property>  
                <property name="connection.url">jdbc:mysql://localhost:3306/vrfdb</property>  
                <property name="connection.username">root</property>  
                <property name="connection.password"></property>  
                <property name="connection.driver_class">com.mysql.jdbc.Driver</property>  
                <property name="show_sql">true</property>
                <property name="format_sql">true</property>  
                <property name="current_session_context_class">thread</property>           
                <mapping class="LA_DAO.OwnerDAO"/>
                <mapping class="LA_DAO.PropertyDAO"/>           
                <mapping class="LA_DAO.ActivityDAO"/>
                <mapping class="LA_DAO.LesseeDAO"/>


         </session-factory>
        </hibernate-configuration>  

＆LT;＆LT; hibernate1.cgf.xml＆GT;＆GT;

    <hibernate-configuration>              
                <session-factory>  
     <property name="dialect">org.hibernate.dialect.MySQLDialect</property>  
                <property name="connection.url">jdbc:mysql://localhost:3306   /leavemanagement</property>  
                <property name="connection.username">root</property>  
                <property name="connection.password"></property>  
                <property name="connection.driver_class">com.mysql.jdbc.Driver</property>  
                <property name="show_sql">true</property>
                <property name="format_sql">true</property>  
                <property name="current_session_context_class">thread</property>

                <mapping class="LA_DAO.BranchDAO"/>             

             </session-factory>
   </hibernate-configuration>

    package LA_DAO;  
    @Entity
@Table(name = "branchmaster" )
public class BranchDAO {

    @Id
    @GeneratedValue
    @Column(name = "branch_id")
    private int id;

    @Column(name = "branch_type_code")
    private int br_main_id;

    @Column(name = "branch_name")
    private String branchName;

    @Column(name = "branch_code")
    private String branchCode;

//getters n setters
}

＆LT;＆GT;     包LA_DAO;

@Entity
@Table(name = "lessee_master")
public class LesseeDAO {

    @Id
    @GeneratedValue
    @Column(name = "id")
    private int lesseeId;

    @Column(name = "Name")
    private String LesseeName;

    @Column(name ="Address")
    private String LesseeAddress;

    @Column(name = "ContactNumber")
    private String LesseeNumber;

    @Column(name ="EmailID" )
    private String LesseeEmail;

    @OneToOne(fetch = FetchType.EAGER  )
    @JoinColumn(name = "BranchId")
    private BranchDAO branch;

}