text: // 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.
  
  #pragma once
  
  #include "vec/columns/column.h"
  #include "vec/columns/column_const.h"
  #include "vec/exprs/vexpr.h"
  
  namespace doris {
  class TExprNode;
  
  namespace vectorized {
  class VLiteral : public VExpr {
  public:
      virtual ~VLiteral();
      VLiteral(const TExprNode& node);
      virtual Status execute(VExprContext* context, vectorized::Block* block,
                             int* result_column_id) override;
      virtual const std::string& expr_name() const override { return _expr_name; }
      virtual VExpr* clone(doris::ObjectPool* pool) const override {
          return pool->add(new VLiteral(*this));
      }
  
  private:
      ColumnPtr _column_ptr;
      std::string _expr_name;
  };
  } // namespace vectorized
  
  } // namespace doris
  