disjunction_query.hxx

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/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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 *   Copyright 2023-Present Couchbase, Inc.
 *
 *   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.
 */
 
#pragma once
 
#include <couchbase/search_query.hxx>
 
#include <cstdint>
#include <memory>
#include <vector>
 
namespace couchbase
{
class disjunction_query : public search_query
{
public:
  template<typename... SearchQuery>
  explicit disjunction_query(SearchQuery&&... queries)
  {
    or_else(std::forward<SearchQuery>(queries)...);
  }

  template<typename... SearchQuery>
  auto or_else(SearchQuery... queries) -> disjunction_query&
  {
    (disjuncts_.emplace_back(std::make_shared<SearchQuery>(std::move(queries))), ...);
    return *this;
  }

  auto min(std::uint32_t number_of_queries) -> disjunction_query&
  {
    min_ = number_of_queries;
    return *this;
  }

  [[nodiscard]] auto encode() const -> encoded_search_query override;
 
private:
  std::vector<std::shared_ptr<search_query>> disjuncts_{};
  std::uint32_t min_{ 1 };
};
} // namespace couchbase