import java.text.SimpleDateFormat;
import java.util.Iterator;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import junit.framework.TestCase;
/**
* 条件查询
* @author Administrator
*
*/
public class SimpleConditionQueryTest extends TestCase {
public void testQuery1() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//可以拼字符串
List students = session.createQuery("select s.id, s.name from Student s where s.name like '%1%'").list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
public void testQuery2() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
// Query query = session.createQuery("select s.id, s.name from Student s where s.name like ?");
// query.setParameter(0, "%1%");
// List students = query.list();
//可以使用?方式传递参数
//参数的索引从0开始
//传递的参数值,不用单引号引起来
//注意方法链编程
List students = session.createQuery("select s.id, s.name from Student s where s.name like ?")
.setParameter(0, "%1%")
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
public void testQuery3() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//使用 :参数名称 的方式传递参数值
List students = session.createQuery("select s.id, s.name from Student s where s.name like :myname")
.setParameter("myname", "%1%")
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
public void testQuery4() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//使用 :参数名称 的方式传递参数值
List students = session.createQuery("select s.id, s.name from Student s where s.name like :myname and s.id=:myid")
.setParameter("myname", "%1%")
.setParameter("myid", 12)
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
public void testQuery5() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//支持in,需要使用setParameterList进行参数传递
List students = session.createQuery("select s.id, s.name from Student s where s.id in(:myids)")
.setParameterList("myids", new Object[]{1, 2, 3, 4, 5})
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
public void testQuery6() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
//查询2008年2月创建的学生
List students = session.createQuery("select s.id, s.name from Student s where date_format(s.createTime, '%Y-%m')=?")
.setParameter(0, "2008-02")
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
public void testQuery7() {
Session session = null;
try {
session = HibernateUtils.getSession();
session.beginTransaction();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
//查询2008-01-10到2008-02-15创建的学生
List students = session.createQuery("select s.id, s.name from Student s where s.createTime between ? and ?")
.setParameter(0, sdf.parse("2008-01-10 00:00:00"))
.setParameter(1, sdf.parse("2008-02-15 23:59:59"))
.list();
for (Iterator iter=students.iterator(); iter.hasNext();) {
Object[] obj = (Object[])iter.next();
System.out.println(obj[0] + "," + obj[1]);
}
session.getTransaction().commit();
}catch(Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}finally {
HibernateUtils.closeSession(session);
}
}
}