Employee public class Employee { private Long id; private String name; HourlyEmployee public class HourlyEmployee extends Employee { private Double rate; SalariedEmployee public class SalariedEmployee extends Employee { private Double salary; Employe…

Employee public class Employee { private Long id; private String name; HourlyEmployee public class HourlyEmployee extends Employee { private Double rate; SalariedEmployee public class SalariedEmployee extends Employee { private Double salary; Employe…

Single Table策略 通过 discriminator鉴别器来区分是父类还是子类 Employee public class Employee { private Long id; private String name; HourlyEmployee public class HourlyEmployee extends Employee { private Double rate; SalariedEmployee public class SalariedEmployee exte…

Employee public class Employee { private Long id; private String name; HourlyEmployee public class HourlyEmployee extends Employee { private Double rate; SalariedEmployee public class SalariedEmployee extends Employee { private Double salary; Employe…

工程截图 hibernate.cfg.xml <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factor…

第1步:通过eclipse新建1个java maven项目. 选择file–>new–>other–>MAVEN PROJECT选项 第2步:New Maven project 选择模版:Artifact Id:maven-archetype-quickstart 包名groupId:com.jege.hibernate 工程/模块名称:Artifact Id:hibernate-single-table 第3步:修改pom.xml如下 <project xmlns="h…

作者:dave@http://krondo.com/a-poetry-transformation-server/  译者:杨晓伟(采用意译) 你可以从这里从头阅读这个系列. 新的服务器实现 这里我们要新写一个Twisted版的服务器.然后,再来讨论一些Deferred的新功能. 在第九.十部分,我们提出了诗歌转换引擎这个概念.由于其实现太过简单,因此我们用随机选择来模拟了可能会出现转换失败的情景.但如果转换引擎位于服务器端,那么当服务器宕机就会出现真实的转换失败的情景了. 因此,在这部分我们要…

在二级缓存配置成功的基础上进行查询缓存配置 Product public class Product { private Long id; private String name; Product.hbm.xml <class name="Product"> <id name="id"> <generator class="native" /> </id> <property name=&qu…

pom.xml <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <version>${hibernate.version}</version> </dependency> Product /** * @author JE哥 * @email 1272434821@qq.com * @…

Product public class Product { private Long id; private String name; Product.hbm.xml <class name="Product"> <id name="id"> <generator class="native" /> </id> <property name="name" /> &l…