/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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 org.apache.shardingsphere.proxy.backend.mysql.handler.admin.executor.show;
  
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  import org.apache.shardingsphere.infra.executor.sql.execute.result.query.QueryResultMetaData;
  import org.apache.shardingsphere.infra.executor.sql.execute.result.query.impl.raw.metadata.RawQueryResultColumnMetaData;
  import org.apache.shardingsphere.infra.executor.sql.execute.result.query.impl.raw.metadata.RawQueryResultMetaData;
  import org.apache.shardingsphere.infra.merge.result.MergedResult;
  import org.apache.shardingsphere.infra.merge.result.impl.local.LocalDataMergedResult;
  import org.apache.shardingsphere.infra.metadata.ShardingSphereMetaData;
  import org.apache.shardingsphere.proxy.backend.handler.admin.executor.DatabaseAdminQueryExecutor;
  import org.apache.shardingsphere.proxy.backend.session.ConnectionSession;
  import org.apache.shardingsphere.sql.parser.statement.mysql.dal.show.procedure.MySQLShowProcedureStatusStatement;
  
  import java.sql.Types;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Show procedure status executor for MySQL.
   */
  @RequiredArgsConstructor
  @Getter
  public final class MySQLShowProcedureStatusExecutor implements DatabaseAdminQueryExecutor {
      
      private final MySQLShowProcedureStatusStatement sqlStatement;
      
      private MergedResult mergedResult;
      
      @Override
      public void execute(final ConnectionSession connectionSession, final ShardingSphereMetaData metaData) {
          mergedResult = new LocalDataMergedResult(Collections.emptyList());
      }
      
      @Override
      public QueryResultMetaData getQueryResultMetaData() {
          List<RawQueryResultColumnMetaData> columns = new ArrayList<>(11);
          columns.add(new RawQueryResultColumnMetaData("", "Db", "Db", Types.VARCHAR, "VARCHAR", 255, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Name", "Name", Types.VARCHAR, "VARCHAR", 255, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Type", "Type", Types.VARCHAR, "VARCHAR", 64, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Definer", "Definer", Types.VARCHAR, "VARCHAR", 64, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Modified", "Modified", Types.VARCHAR, "VARCHAR", 64, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Created", "Created", Types.VARCHAR, "VARCHAR", 64, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Security_type", "Security_type", Types.VARCHAR, "VARCHAR", 64, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Comment", "Comment", Types.VARCHAR, "VARCHAR", 120, 0));
          columns.add(new RawQueryResultColumnMetaData("", "character_set_client", "character_set_client", Types.VARCHAR, "VARCHAR", 20, 0));
          columns.add(new RawQueryResultColumnMetaData("", "collation_connection", "collation_connection", Types.VARCHAR, "VARCHAR", 20, 0));
          columns.add(new RawQueryResultColumnMetaData("", "Database_Collation", "Database_Collation", Types.VARCHAR, "VARCHAR", 20, 0));
          return new RawQueryResultMetaData(columns);
      }
  }