/*
    * 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.sql.parser.sql.dialect.statement.opengauss.dml;
  
  import lombok.Setter;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.pagination.limit.LimitSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.predicate.LockSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.WindowSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.table.TableSegment;
  import org.apache.shardingsphere.sql.parser.sql.common.statement.dml.SelectStatement;
  import org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.OpenGaussStatement;
  
  import java.util.Optional;
  
  /**
   * OpenGauss select statement.
   */
  @Setter
  public final class OpenGaussSelectStatement extends SelectStatement implements OpenGaussStatement {
      
      private LimitSegment limit;
      
      private LockSegment lock;
      
      private WindowSegment window;
      
      private TableSegment intoSegment;
      
      /**
       * Get order by segment.
       *
       * @return order by segment
       */
      public Optional<LimitSegment> getLimit() {
          return Optional.ofNullable(limit);
      }
      
      /**
       * Get lock segment.
       *
       * @return lock segment
       */
      public Optional<LockSegment> getLock() {
          return Optional.ofNullable(lock);
      }
      
      /**
       * Get window segment.
       *
       * @return window segment
       */
      public Optional<WindowSegment> getWindow() {
          return Optional.ofNullable(window);
      }
      
      /**
       * Get into segment.
       *
       * @return into segment
       */
      public Optional<TableSegment> getIntoSegment() {
          return Optional.ofNullable(intoSegment);
      }
  }