Hibernate ing MAP value object simple ing

Next, Hibernate ing List Value Object simple ing
Then, make a small modification to the user object. Assume that we need to store the working department, and use the MAP storage Department as the key, and the specific work as the value;

package com.ccay.test.valueCollection.map.xml;import java.util.HashMap;import java.util.Map;public class User {private long userId;private String firstname;private String lastname;private Map<String,String> tasks = new HashMap<String,String>();public long getUserId() {return userId;}public void setUserId(long userId) {this.userId = userId;}public String getFirstname() {return firstname;}public void setFirstname(String firstname) {this.firstname = firstname;}public String getLastname() {return lastname;}public void setLastname(String lastname) {this.lastname = lastname;}public Map<String, String> getTasks() {return tasks;}public void setTasks(Map<String, String> tasks) {this.tasks = tasks;}}

 

<?xml version="1.0" encoding="utf-8"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
package com.ccay.test.valueCollection.map.xml;import java.util.HashMap;import java.util.Map;import org.hibernate.Session;import org.hibernate.Transaction;import com.ccay.test.HibernateSessionFactory;public class Test {@org.junit.Testpublic void testDDL(){Session session = HibernateSessionFactory.getSession();Transaction transaction = session.beginTransaction();Map<String,String> tasks = new HashMap<String,String>();tasks.put("org1", "student");tasks.put("org2", "teacher");User user= new User();user.setFirstname("firstName");user.setLastname("lastName");user.setTasks(tasks);session.save(user);transaction.commit();HibernateSessionFactory.closeSession();}}
 
    create table VAL_COLLECTION_SIMPLE_SET_TASKS (        USER_ID bigint not null,        TASK varchar(255) not null,        TASK_ORG varchar(255) not null,        primary key (USER_ID, TASK_ORG)    )    create table VAL_COLLECTION_SIMPLE_SET_USER (        USER_ID bigint not null auto_increment,        FIRSTNAME varchar(40),        LASTNAME varchar(50),        primary key (USER_ID)    )    alter table VAL_COLLECTION_SIMPLE_SET_TASKS         add index FK839C9A2723909775 (USER_ID),         add constraint FK839C9A2723909775         foreign key (USER_ID)         references VAL_COLLECTION_SIMPLE_SET_USER (USER_ID)