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package com.gmail.newmanhuang.learnhibernate;
import java.util.Iterator;
import java.util.List;
import org.hibernate.SessionFactory;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.Criteria;
import org.hibernate.criterion.Expression;
import com.gmail.newmanhuang.learnhibernate.model.Person;
import java.sql.*;
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public class LearnHibernateMain {
??????
?????? private Configuration config;
?????? private SessionFactory sessionFactory;
?????? private Session session;
??????
?????? public static void main(String[] args) {
????????????? LearnHibernateMain lh=new LearnHibernateMain();
?????????????
//
用
hibernate
創(chuàng)建
10000
條記錄，分
10
次插入，每次
1000
條，每
100
條記錄做一次批量插入
?????????????
//lh.createPersons(10, 1000, 100);
?????????????
//
用
jdbc
直接創(chuàng)建
10000
條記錄，分
10
次插入，每次
1000
條，每
100
條記錄做一次批量插入
????????????? lh.createPersonsByJDBC(10, 1000,100);
?????? }
??????
??????
??????
//
用
hibernate
創(chuàng)建
person
記錄
, loopNum
為循環(huán)插入的次數(shù)，
batchNum1
為每次循環(huán)插入的記錄數(shù)，
batchNum2
為物理批量插入記錄數(shù)
?????? private void createPersons(int loopNum,int batchNum1,int batchNum2){
????????????? setup();
????????????? System.out.println("hibernate record creating testing.\r\n"
??????????????????????????? + "loop times:" + loopNum + "\r\nbatch number:" + batchNum1);
?????????????
????????????? for(int i=0;i<loopNum;i++){
???????????????????? try {
??????????????????????????? Thread.sleep(50);//
休眠
???????????????????? } catch (InterruptedException e) {
??????????????????????????? e.printStackTrace();
???????????????????? }
???????????????????? long fPoint=System.currentTimeMillis();
???????????????????? Transaction tx = session.beginTransaction();
???????????????????? for(int j=0;j<batchNum1;j++){
??????????????????????????? Person person = new Person();
??????????????????????????? person.setName("name-" + i +"-"+ j);
??????????????????????????? person.setAge(new Integer(25));
??????????????????????????? session.save(person);
??????????????????????????? //batch flush
??????????????????????????? if ( j % batchNum2 == 0 ) {//
執(zhí)行物理批量插入
?????????????????????????????????? session.flush();
?????????????????????????????????? session.clear(); ???????????
??????????????????????????? }
???????????????????? }
???????????????????? tx.commit();
???????????????????? long tPoint=System.currentTimeMillis();
????????????????????
//
打印插入
batchNum1
條記錄的速率
(
條
/
秒
)
???????????????????? System.out.println(
?????????????????????????????????? "the " + i + " batch" + "(" + batchNum1 +") rcds/s:"
?????????????????????????????????? + ((double)batchNum1/(tPoint-fPoint))*1000);
????????????? }
????????????? teardown();
?????? }
??????
??????
//
用
jdbc
創(chuàng)建
person
記錄
, loopNum
為循環(huán)插入的次數(shù)，
batchNum1
為每次循環(huán)插入的記錄數(shù)，
batchNum2
為物理批量插入記錄數(shù)
?????? private void createPersonsByJDBC(int loopNum,int batchNum1,int batchNum2){
????????????? System.out.println("JDBC record creating testing.\r\n"
??????????????????????????? + "loop times:" + loopNum + "\r\nbatch number:" + batchNum1);
????????????? Connection conn=getDBConn();
????????????? try{
???????????????????? PreparedStatement pstmt=conn.prepareStatement("insert into person(name,age) values(?,?)");
???????????????????? for(int i=0;i<loopNum;i++){
??????????????????????????? try {
?????????????????????????????????? Thread.sleep(50);//
休眠
??????????????????????????? } catch (InterruptedException e) {
?????????????????????????????????? e.printStackTrace();
??????????????????????????? }
??????????????????????????? long fPoint=System.currentTimeMillis();
??????????????????????????? conn.setAutoCommit(false);
??????????????????????????? for(int j=0;j<batchNum1;j++){
?????????????????????????????????? String name="name-" + i +"-"+ j;
?????????????????????????????????? pstmt.setString(1, name);
?????????????????????????????????? pstmt.setInt(2, 25);
?????????????????????????????????? pstmt.addBatch();
?????????????????????????????????? if(j%batchNum2==0){//
執(zhí)行物理批量插入
????????????????????????????????????????? pstmt.executeBatch();
????????????????????????????????????????? conn.commit();
?????????????????????????????????? }
??????????????????????????? }
??????????????????????????? pstmt.executeBatch();
??????????????????????????? conn.commit();
??????????????????????????? conn.setAutoCommit(true);
??????????????????????????? long tPoint=System.currentTimeMillis();
???????????????????????????
//
打印插入
batchNum1
條記錄的速率
(
條
/
秒
)
??????????????????????????? System.out.println(
????????????????????????????????????????? "the " + i + " batch" + "(" + batchNum1 +") rcds/s:"
????????????????????????????????????????? + ((double)batchNum1/(tPoint-fPoint))*1000);
???????????????????? }
???????????????????? pstmt.close();
????????????? }catch(Exception x){
???????????????????? try{
??????????????????????????? conn.close();
???????????????????? }catch(Exception x1){
???????????????????????????
???????????????????? }
????????????? }
?????? }
??????
??????
//
獲取
JDBC
連接
?????? private Connection getDBConn(){
????????????? Connection conn=null;
????????????? try {
???????????????????? Class.forName("org.gjt.mm.mysql.Driver");
???????????????????? conn=DriverManager.getConnection("jdbc:mysql://localhost/learnhibernate", "root", "");
????????????? } catch (Exception x) {
?
????????????? }
????????????? return conn;
?????? }
??????
??????
//
初始化
hibernate
數(shù)據(jù)庫(kù)環(huán)境
?????? private void setup(){
????????????? config = new Configuration().configure();
????????????? sessionFactory = config.buildSessionFactory();
????????????? session = sessionFactory.openSession();
?????? }
??????
??????
//
銷(xiāo)毀
hibernate
數(shù)據(jù)庫(kù)環(huán)境
?????? private void teardown(){
????????????? session.close();
????????????? sessionFactory.close();????????
?????? }
}
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