content: /*
   * Copyright 1999-2023 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.nacos.persistence.utils;
  
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  /**
   * Derby util.
   *
   * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
   */
  public final class DerbyUtils {
      
      private static final String INSERT_INTO_VALUES = "(INSERT INTO .+? VALUES)";
      
      private static final Pattern INSERT_INTO_PATTERN = Pattern.compile(INSERT_INTO_VALUES);
      
      /**
       * Because Derby's database table name is uppercase, you need to do a conversion to the insert statement that was
       * inserted.
       *
       * @param sql external database insert sql
       * @return derby insert sql
       */
      public static String insertStatementCorrection(String sql) {
          Matcher matcher = INSERT_INTO_PATTERN.matcher(sql);
          if (!matcher.find()) {
              return sql;
          }
          final String target = matcher.group(0);
          final String upperCase = target.toUpperCase().replace("`", "");
          return sql.replaceFirst(INSERT_INTO_VALUES, upperCase).replace(";", "");
      }
      
  }
  