| public void createData();
public List findByName(String name);
}
EntityTestBean.java
package com.kuaff.ejb3.relationships;
import javax.ejb.EntityManager;
import javax.ejb.Inject;
import javax.ejb.Stateless;
import java.util.HashSet;
import java.util.Set;
import java.util.List;
@Stateless
public class EntityTestBean implements EntityTest
{
private @Inject EntityManager manager;
public void createData()
{
Teacher teacher1 = new Teacher();
Teacher teacher2 = new Teacher();
Set<Student> students1 = new HashSet<Student>();
Set<Student> students2 = new HashSet<Student>();
Student student1 = new Student();
Student student2 = new Student();
Student student3 = new Student();
Dossier dossier1 = new Dossier();
Dossier dossier2 = new Dossier();
Dossier dossier3 = new Dossier();
teacher1.setId(new Long(1));
teacher1.setName("hushisheng");
teacher1.setInfo("胡时胜教授，博士生导师");
manager.create(teacher1);
teacher2.setId(new Long(2));
teacher2.setName("liyongchi");
teacher2.setInfo("李永池教授，博士生导师");
manager.create(teacher2);
student1.setFirst("晁");
student1.setLast("岳攀");
dossier1.setResume("这是晁岳攀的档案");
student1.setDossier(dossier1);
students1.add(student1);
student2.setFirst("赵");
student2.setLast("志伟");
dossier2.setResume("这是赵志伟的档案");
student2.setDossier(dossier2);
students1.add(student2);
student3.setFirst("田");
student3.setLast("明");
dossier3.setResume("这是田明的档案");
student3.setDossier(dossier3);
students2.add(student3);
teacher1.setStudents(students1);
teacher2.setStudents(students2);
}
public List findByName(String name)
{
return manager.createQuery("from Teacher t where t.name = :name").setParameter("name", name).listResults();
}
}
EJB 3.0开发指南之多对多和一对一(4)
时间:2009-11-27 天极
在这个会话Bean中提供了创建各个实体Bean的方法，并提供了查找老师的方法。
Client.java
package com.kuaff.ejb3.secondary;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.List;
public class Client
{
public static void main(String[] args) throws NamingException
{
InitialContext ctx = new InitialContext();
StudentDAO dao = (StudentDAO) ctx.lookup(StudentDAO.class.getName());
int id = dao.create("晁","岳攀","8","smallnest@kuaff.com","男");
dao.create("朱","立焕","6","zhuzhu@kuaff.com","女");
List list = dao.findAll();
for(Object o:list)
{
Student s = (Student)o;
System.out.printf("%s%s的性别:%s%n",s.getName().getFirst(),s.getName().getLast(),s.getGender());
dao.evict(s);
}
}
}
这个客户端用来测试。
请运行{$JBOSS_HOME}/bin目录下的run.bat: run –c all,启动JBOSS。
http://localhost:8080/jmx-console/HtmlAdaptor?action=inspectMBean&name=jboss%3Aservice%3DHypersonic%2Cdatabase%3DlocalDB，然后调用startDat |
