text: ////////////////////////////////////////////////////////////////////////////////
  /// DISCLAIMER
  ///
  /// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
  /// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
  ///
  /// 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.
  ///
  /// Copyright holder is ArangoDB GmbH, Cologne, Germany
  ///
  /// @author Jan Steemann
  ////////////////////////////////////////////////////////////////////////////////
  
  #ifndef ARANGOD_AQL_QUERY_RESULT_H
  #define ARANGOD_AQL_QUERY_RESULT_H 1
  
  #include "Basics/Common.h"
  
  namespace arangodb {
  namespace velocypack {
  class Builder;
  }
  
  namespace transaction {
  class Context;
  }
  
  namespace aql {
  
  struct QueryResult {
    QueryResult& operator=(QueryResult const& other) = delete;
    QueryResult(QueryResult&& other) = default;
  
    QueryResult(int code, std::string const& details)
        : code(code),
          cached(false),
          details(details),
          result(nullptr),
          extra(nullptr),
          context(nullptr) {}
  
    explicit QueryResult(int code) : QueryResult(code, "") {}
  
    QueryResult() : QueryResult(TRI_ERROR_NO_ERROR) {}
  
    virtual ~QueryResult() {}
  
    void set(int c, std::string const& d) {
      code = c;
      cached = false;
      details = d;
      result.reset();
      extra.reset();
      context.reset();
    }
  
   public:
    int code;
    bool cached;
    std::string details;
    std::unordered_set<std::string> bindParameters;
    std::vector<std::string> collectionNames;
    std::shared_ptr<arangodb::velocypack::Builder> result;
    std::shared_ptr<arangodb::velocypack::Builder> extra;
    std::shared_ptr<transaction::Context> context;
  };
  }  // namespace aql
  }  // namespace arangodb
  
  #endif
  