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.pool;
  
  import com.alibaba.druid.util.JdbcUtils;
  import junit.framework.TestCase;
  
  import java.sql.Connection;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Statement;
  import java.util.Random;
  
  public class TestPoolStatement extends TestCase {
      private DruidDataSource dataSource;
  
      protected void setUp() throws Exception {
          dataSource = new DruidDataSource();
          dataSource.setUrl("jdbc:oracle:thin:@a.b.c.d:1521:testconn");
          dataSource.setInitialSize(1);
          dataSource.setMaxActive(14);
          dataSource.setMaxIdle(14);
          dataSource.setMinIdle(1);
          dataSource.setMinEvictableIdleTimeMillis(300 * 1000); // 300 / 10
          dataSource.setTimeBetweenEvictionRunsMillis(180 * 1000); // 180 / 10
          dataSource.setTestWhileIdle(false);
          dataSource.setTestOnBorrow(false);
          dataSource.setValidationQuery("SELECT 1");
          dataSource.setFilters("stat");
          dataSource.setPoolPreparedStatements(true);
          dataSource.setUsername("alibaba");
          dataSource.setPassword("alibaba");
      }
  
      public void test_0() throws Exception {
          stat();
          long startMillis = System.currentTimeMillis();
          for (int i = 0; i < 1000 * 5; ++i) {
              exec();
          }
          long millis = System.currentTimeMillis() - startMillis;
          stat();
          System.out.println();
          System.out.println("millis : " + millis);
      }
  
      private void stat() throws SQLException {
          Connection conn = dataSource.getConnection();
  
          String sql = "SELECT sysdate,name,value FROM V$SYSSTAT WHERE NAME IN ('parse count (total)', 'execute count')";
  
          Statement stmt = conn.createStatement();
          ResultSet rs = stmt.executeQuery(sql);
          JdbcUtils.printResultSet(rs);
          rs.close();
          stmt.close();
          conn.close();
      }
  
      private void exec() throws SQLException {
          Connection conn = dataSource.getConnection();
  
          String sql = "select * from ALIBABA.ORDER_MAIN WHERE ID = ?";
  
          PreparedStatement stmt = conn.prepareStatement(sql);
          stmt.setLong(1, new Random().nextInt(1000 * 100));
          ResultSet rs = stmt.executeQuery();
          while (rs.next()) {
              // Process result set rows
          }
          rs.close();
          stmt.close();
          conn.close();
      }
  }
  