content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.druid.benckmark.sql;
  
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
  import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlASTVisitor;
  import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
  import com.alibaba.druid.sql.test.TestUtils;
  
  import java.lang.management.ManagementFactory;
  import java.util.List;
  
  public class MySqlPerfMain_visitor {
      public static void main(String[] args) throws Exception {
          System.out.println(System.getProperty("java.vm.name") + " " + System.getProperty("java.runtime.version"));
          List<String> arguments = ManagementFactory.getRuntimeMXBean().getInputArguments();
          System.out.println(arguments);
  
          String sql = "SELECT ID, NAME, AGE FROM USER WHERE ID = ?";
  
          for (int i = 0; i < 5; ++i) {
              perfMySql(sql);
          }
      }
  
      static long perfMySql(String sql) {
          long startYGC = TestUtils.getYoungGC();
          long startYGCTime = TestUtils.getYoungGCTime();
          long startFGC = TestUtils.getFullGC();
  
          MySqlStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
  
          long startMillis = System.currentTimeMillis();
          for (int i = 0; i < 1000 * 1000 * 1; ++i) {
              execMySql(statementList);
          }
          long millis = System.currentTimeMillis() - startMillis;
  
          long ygc = TestUtils.getYoungGC() - startYGC;
          long ygct = TestUtils.getYoungGCTime() - startYGCTime;
          long fgc = TestUtils.getFullGC() - startFGC;
  
          System.out.println("MySql\t" + millis + ", ygc " + ygc + ", ygct " + ygct + ", fgc " + fgc);
          return millis;
      }
  
      static void execMySql(List<SQLStatement> statementList) {
          MySqlASTVisitor visitor = new MySqlSchemaStatVisitor();
  
          for (SQLStatement statement : statementList) {
              statement.accept(visitor);
          }
      }
  }
  