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.sql.parser;
  
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
  import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlOutputVisitor;
  import com.alibaba.druid.sql.dialect.oracle.parser.OracleStatementParser;
  import com.alibaba.druid.sql.dialect.oracle.visitor.OracleOutputVisitor;
  import com.alibaba.druid.util.JdbcUtils;
  import com.alibaba.druid.util.Utils;
  import junit.framework.TestCase;
  
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.Reader;
  import java.util.List;
  
  public class PerfTest extends TestCase {
      public void test_perf() throws Exception {
          for (int i = 0; i < 10; ++i) {
              // perf("SELECT * FROM my_table WHERE TRUNC(SYSDATE) = DATE '2002-10-03';");
              perfOracle("SELECT a.ID, a.GMT_CREATE, a.GMT_MODIFIED, a.COMPANY_NAME, a.BIZ_TYPE , b.SERVICE_TYPE, b.SERVICE_LEVEL, b.BUSINESS_ROLE, a.STATUS, a.RECOMMENDED , a.COUNTRY, a.PROVINCE, a.CITY, a.ADDRESS, a.ZIP , a.LOGO_FILE, a.EMAIL, a.BRIEF_PROFILE, a.DOMAIN_ID, a.IS_PASS_AV , a.KEYWORDS, a.PROVIDE_PRODUCTS, a.PURCHASE_PRODUCTS, a.BRAND_NAME, a.PROMOTION_VALUE , a.OWNER_MEMBER_ID, a.OWNER_SEQ, a.EMPLOYEES_COUNT, a.ANNUAL_REVENUE, a.HOMEPAGE_URL , a.REG_ADDRESS, a.TRADE_REGION, a.TRADE_REGION_USER, a.REG_CAPITAL, a.OWNERSHIP_TYPE , a.ESTABLISHED_YEAR, a.PRINCIPAL, a.ANNUAL_PURCHASE, a.CERTIFICATION, a.CERTIFICATION_2 , a.CONTACT_MANUFACTURING, a.YEARS_OEM, b.STAGE, a.VIDEO_PATH, a.ABOUTUS_IMAGE_PATH , a.ABOUTUS_IMAGE_TITLE, a.CHINESE_NAME, a.IMAGE_VERSION FROM COMPANY a, VACCOUNT b WHERE a.ID = b.ID AND a.id IN (?)");
              perfMySql("SELECT a.ID, a.GMT_CREATE, a.GMT_MODIFIED, a.COMPANY_NAME, a.BIZ_TYPE , b.SERVICE_TYPE, b.SERVICE_LEVEL, b.BUSINESS_ROLE, a.STATUS, a.RECOMMENDED , a.COUNTRY, a.PROVINCE, a.CITY, a.ADDRESS, a.ZIP , a.LOGO_FILE, a.EMAIL, a.BRIEF_PROFILE, a.DOMAIN_ID, a.IS_PASS_AV , a.KEYWORDS, a.PROVIDE_PRODUCTS, a.PURCHASE_PRODUCTS, a.BRAND_NAME, a.PROMOTION_VALUE , a.OWNER_MEMBER_ID, a.OWNER_SEQ, a.EMPLOYEES_COUNT, a.ANNUAL_REVENUE, a.HOMEPAGE_URL , a.REG_ADDRESS, a.TRADE_REGION, a.TRADE_REGION_USER, a.REG_CAPITAL, a.OWNERSHIP_TYPE , a.ESTABLISHED_YEAR, a.PRINCIPAL, a.ANNUAL_PURCHASE, a.CERTIFICATION, a.CERTIFICATION_2 , a.CONTACT_MANUFACTURING, a.YEARS_OEM, b.STAGE, a.VIDEO_PATH, a.ABOUTUS_IMAGE_PATH , a.ABOUTUS_IMAGE_TITLE, a.CHINESE_NAME, a.IMAGE_VERSION FROM COMPANY a, VACCOUNT b WHERE a.ID = b.ID AND a.id IN (?)");
              // perf(loadSql("bvt/parser/oracle-23.txt"));
          }
      }
  
      String loadSql(String resource) throws Exception {
          InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(resource);
          Reader reader = new InputStreamReader(is, "UTF-8");
          String input = Utils.read(reader);
          JdbcUtils.close(reader);
          String[] items = input.split("---------------------------");
          String sql = items[1].trim();
  
          return sql;
      }
  
      void perfOracle(String sql) {
          long startMillis = System.currentTimeMillis();
          for (int i = 0; i < 1000 * 1000; ++i) {
              execOracle(sql);
          }
          long millis = System.currentTimeMillis() - startMillis;
          System.out.println("Oracle\t" + millis);
      }
  
      void perfMySql(String sql) {
          long startMillis = System.currentTimeMillis();
          for (int i = 0; i < 1000 * 1000; ++i) {
              execMySql(sql);
          }
          long millis = System.currentTimeMillis() - startMillis;
          System.out.println("MySql\t" + millis);
      }
  
      private String execOracle(String sql) {
          StringBuilder out = new StringBuilder();
          OracleOutputVisitor visitor = new OracleOutputVisitor(out);
  
          OracleStatementParser parser = new OracleStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
          for (SQLStatement statement : statementList) {
              statement.accept(visitor);
              visitor.println();
          }
  
          return out.toString();
      }
  
      private String execMySql(String sql) {
          StringBuilder out = new StringBuilder();
          MySqlOutputVisitor visitor = new MySqlOutputVisitor(out);
  
          MySqlStatementParser parser = new MySqlStatementParser(sql);
          List<SQLStatement> statementList = parser.parseStatementList();
          for (SQLStatement statement : statementList) {
              statement.accept(visitor);
              visitor.println();
          }
  
          return out.toString();
      }
  }
  