hibernate-criteria查询

package Test;

import java.util.ArrayList;
import java.util.List;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Criterion;
import org.hibernate.criterion.MatchMode;
import org.hibernate.criterion.Restrictions;
import org.junit.Test;

import com.sun.org.apache.regexp.internal.recompile;

import entity.Dept;
import entity.Emp;

import util.HibernateSessionFactory;

public class TestCriteria {
/*
通过criteria查询部门信息
*/
@Test
public void test1(){
Session session =HibernateSessionFactory.getSession();
Criteria criteria = session.createCriteria(Dept.class);
List<Dept> list=criteria.list();
System.out.println("通过criteria查询部门信息");
for (Dept dept : list) {
System.out.println(dept.getDname());
}
}

/**
* 查询位置在二楼的部门
*/
@Test
public void test2(){
Session session =HibernateSessionFactory.getSession();
Criteria criteria = session.createCriteria(Dept.class);
//.add(Restrictions.eq("loc", "二楼"));
Criterion criterion = Restrictions.eq("loc", "二楼");
criteria.add(criterion);
List<Dept> list=criteria.list();
System.out.println("查询位置在二楼的部门");
for (Dept dept : list) {
System.out.println(dept.getDname()+"\t"+dept.getLoc());
}

}

/**
* 查询工资高于2000元的员工
*/
@Test
public void test3(){
Session session =HibernateSessionFactory.getSession();
Criteria criteria = session.createCriteria(Emp.class)
.add(Restrictions.gt("sal", 2000D));

List<Emp> list=criteria.list();
System.out.println("查询工资高于2000元的员工");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getSal());
}

}

/**
* 查询不属于任何部门的员工
*/
@Test
public void test4(){
Session session =HibernateSessionFactory.getSession();
Criteria criteria = session.createCriteria(Emp.class)
.add(Restrictions.isNull("dept"));

List<Emp> list=criteria.list();
System.out.println("查询不属于任何部门的员工");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getSal());
}

}

/**
* 查询职位是“MANAGER”的员工
*/
@Test
public void test5(){
Session session =HibernateSessionFactory.getSession();
Criteria criteria = session.createCriteria(Emp.class)
.add(Restrictions.eq("job", "MANAGER"));

List<Emp> list=criteria.list();
System.out.println("查询职位是“MANAGER”的员工");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getJob());
}

}
/**
* 查询职位是“MANAGER”或“CLERK”的员工
*/
@Test
public void test6(){
Session session =HibernateSessionFactory.getSession();
List<String> joblist=new ArrayList<String>();
joblist.add("MANAGER");
joblist.add("CLERK");
Criteria criteria = session.createCriteria(Emp.class)
.add(Restrictions.in("job", joblist));

List<Emp> list=criteria.list();
System.out.println("查询职位是“MANAGER”或“CLERK”的员工");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getJob());
}

}
/**
* 查询工资在2000到5000元之间的员工
*/
@Test
public void test7(){
Session session =HibernateSessionFactory.getSession();

Criteria criteria = session.createCriteria(Emp.class)
//.add(Restrictions.ge("sal", 2000D))
//.add(Restrictions.le("sal", 5000D));
.add(Restrictions.between("sal", 2000D, 5000D));
List<Emp> list=criteria.list();
System.out.println("查询工资在2000到5000元之间的员工");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getSal());
}

}
/**
* 查询姓名中包括 “s”的员工
*/
@Test
public void test8(){
Session session =HibernateSessionFactory.getSession();

Criteria criteria = session.createCriteria(Emp.class)
//.add(Restrictions.like("ename", "%s%").ignoreCase());//忽略大小写
.add(Restrictions.like("ename", "s", MatchMode.ANYWHERE).ignoreCase());
List<Emp> list=criteria.list();
System.out.println("查询姓名中包括 “s”的员工");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getSal());
}

}

/**
* 查询职位是“analyser”或“accountant”的员工
*/
@Test
public void test9(){
Session session =HibernateSessionFactory.getSession();

Criteria criteria = session.createCriteria(Emp.class)
//两个or
//.add(Restrictions.or(Restrictions.eq("job", "CLERK"),
//Restrictions.eq("job", "SALESMAN")));
//三个
.add(Restrictions.disjunction()
.add(Restrictions.eq("job", "SALESMAN"))
.add(Restrictions.eq("job", "CLERK"))
.add(Restrictions.eq("job","MANAGER"))
);
List<Emp> list=criteria.list();
System.out.println("查询职位是“analyser”或“accountant”的员工--几种方法");
for (Emp emp : list) {
System.out.println(emp.getEname()+"\t"+emp.getSal()+"\t"+emp.getJob());
}

}

/**
* 查询没有员工的部门
*/
@Test
public void test10(){
Session session =HibernateSessionFactory.getSession();

Criteria criteria = session.createCriteria(Dept.class)
.add(Restrictions.isEmpty("emps"));
List<Dept> list=criteria.list();
System.out.println(" 查询没有员工的部门");
for (Dept dept : list) {
System.out.println(dept.getDname());
}

}

}