/*
* Copyright 1999-2012 Alibaba Group.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.cobar.parser.recognizer;
import java.sql.SQLSyntaxErrorException;
/**
* @author xianmao.hexm
*/
public class SQLParserPerformanceMain {
public static void performance() throws SQLSyntaxErrorException {
// String sql = "select id,member_id,gmt_create from offer where member_id in ('1','22','333','1124','4525')";
int LOOP = 10 * 1000 * 1000;
String sql = "select * from table1 where id = 18";
long t1 = System.currentTimeMillis();
long t2 = System.currentTimeMillis();
for (int i = 0; i < 1000; i++) {
SQLParserDelegate.parse(sql);
}
t1 = System.currentTimeMillis();
for (int i = 0; i < LOOP; ++i) {
SQLParserDelegate.parse(sql);
}
t2 = System.currentTimeMillis();
double time = (t2 - t1) * 1000.0d / LOOP;
System.out.println("time=" + time + " us");
}
public static void main(String[] args) throws SQLSyntaxErrorException {
performance();
}
}