text: /**
   *   Copyright 2021 Alibaba, Inc. and its affiliates. All Rights Reserved.
   *
   *   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.
  
   *   \author   Dianzhang.Chen
   *   \date     Oct 2020
   *   \brief    Interface of collection creator
   */
  
  #pragma once
  
  #include <memory>
  #include "common/macro_define.h"
  #include "collection.h"
  
  namespace proxima {
  namespace be {
  namespace repository {
  
  class CollectionCreator;
  using CollectionCreatorPtr = std::shared_ptr<CollectionCreator>;
  
  /*! Collection Creator
   */
  class CollectionCreator {
   public:
    //! Destructor
    virtual ~CollectionCreator() = default;
  
    //! Create collection
    virtual CollectionPtr create(const CollectionInfo &info) const = 0;
  };
  
  /*! Collection Creator Implication
   */
  class CollectionCreatorImpl : public CollectionCreator {
   public:
    //! Constructor
    CollectionCreatorImpl() = default;
  
    //! Destructor
    ~CollectionCreatorImpl() = default;
  
    //! Create collection
    CollectionPtr create(const CollectionInfo &info) const override;
  };
  
  }  // end namespace repository
  }  // namespace be
  }  // end namespace proxima
  