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.bvt.filter.wall;
  
  import com.alibaba.druid.sql.PagerUtils;
  import com.alibaba.druid.util.JdbcConstants;
  import com.alibaba.druid.wall.WallCheckResult;
  import com.alibaba.druid.wall.WallConfig;
  import com.alibaba.druid.wall.WallProvider;
  import com.alibaba.druid.wall.spi.DB2WallProvider;
  import com.alibaba.druid.wall.spi.MySqlWallProvider;
  import com.alibaba.druid.wall.spi.OracleWallProvider;
  import com.alibaba.druid.wall.spi.PGWallProvider;
  import com.alibaba.druid.wall.spi.SQLServerWallProvider;
  import junit.framework.TestCase;
  
  public class WallSelectLimitTest_2 extends TestCase {
      private WallConfig config = new WallConfig();
  
      protected void setUp() throws Exception {
          config.setSelectLimit(1000);
      }
  
      public void testMySql() throws Exception {
          String sql = "select * from t limit 10";
          WallProvider provider = new MySqlWallProvider(config);
          WallCheckResult checkResult = provider.check(sql);
          String resultSql = checkResult.getSql();
          System.out.println(resultSql);
          assertEquals("SELECT *\n" +
                  "FROM t\n" +
                  "LIMIT 0, 10", resultSql);
      }
  
      public void testMySql_0() throws Exception {
          String sql = "select * from t";
          WallProvider provider = new MySqlWallProvider(config);
          {
              WallCheckResult checkResult = provider.check(sql);
              String resultSql = checkResult.getSql();
              System.out.println(resultSql);
              assertEquals("SELECT *\n" +
                      "FROM t\n" +
                      "LIMIT 1000", resultSql);
          }
          {
              WallCheckResult checkResult = provider.check(sql);
              String resultSql = checkResult.getSql();
              System.out.println(resultSql);
              assertEquals("SELECT *\n" +
                      "FROM t\n" +
                      "LIMIT 1000", resultSql);
          }
      }
  
      public void testPG() throws Exception {
          String sql = "select * from t limit 10";
          WallProvider provider = new PGWallProvider(config);
          WallCheckResult checkResult = provider.check(sql);
          String resultSql = checkResult.getSql();
          System.out.println(resultSql);
          assertEquals("SELECT *\n" +
                  "FROM t\n" +
                  "LIMIT 10 OFFSET 0", resultSql);
      }
  
      public void testDB2() throws Exception {
          String sql = PagerUtils.limit("select * from t", JdbcConstants.DB2, 0, 10);
          WallProvider provider = new DB2WallProvider(config);
          WallCheckResult checkResult = provider.check(sql);
          String resultSql = checkResult.getSql();
          System.out.println(resultSql);
          assertEquals("SELECT *\n" +
                  "FROM t\n" +
                  "FETCH FIRST 10 ROWS ONLY", resultSql);
      }
  
      public void testSQLServer() throws Exception {
          String sql = PagerUtils.limit("select * from t", JdbcConstants.SQL_SERVER, 0, 10);
          WallProvider provider = new SQLServerWallProvider(config);
          WallCheckResult checkResult = provider.check(sql);
          String resultSql = checkResult.getSql();
          System.out.println(resultSql);
          assertEquals("SELECT TOP 10 *\n" +
                  "FROM t", resultSql);
      }
  
      public void testOracle() throws Exception {
          String sql = PagerUtils.limit("select * from t", JdbcConstants.ORACLE, 0, 10);
          WallProvider provider = new OracleWallProvider(config);
          WallCheckResult checkResult = provider.check(sql);
          String resultSql = checkResult.getSql();
          System.out.println(resultSql);
          assertEquals("SELECT *\n" +
                  "FROM t\n" +
                  "WHERE ROWNUM <= 10", resultSql);
  
          sql = PagerUtils.limit("select * from t", JdbcConstants.OCEANBASE_ORACLE, 0, 10);
          provider = new OracleWallProvider(config);
          checkResult = provider.check(sql);
          resultSql = checkResult.getSql();
          System.out.println(resultSql);
          assertEquals("SELECT *\n" +
                  "FROM t\n" +
                  "WHERE ROWNUM <= 10", resultSql);
      }
  }
  