text: ////////////////////////////////////////////////////////////////////////////////
  /// DISCLAIMER
  ///
  /// Copyright 2014-2021 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 Dan Larkin-York
  ////////////////////////////////////////////////////////////////////////////////
  
  #include "Cache/Finding.h"
  
  #include "Basics/debugging.h"
  #include "Basics/voc-errors.h"
  #include "Cache/CachedValue.h"
  
  namespace arangodb::cache {
  
  Finding::Finding() : _value(nullptr), _result(TRI_ERROR_NO_ERROR) {}
  
  Finding::Finding(CachedValue* v) : _value(v), _result(TRI_ERROR_NO_ERROR) {
    if (_value != nullptr) {
      _value->lease();
    }
  }
  
  Finding::Finding(CachedValue* v, Result const& r) : _value(v), _result(r) {
    if (_value != nullptr) {
      _value->lease();
    }
  }
  
  Finding::Finding(Finding&& other)
      : _value(other._value), _result(std::move(other._result)) {
    other._value = nullptr;
  }
  
  Finding& Finding::operator=(Finding&& other) {
    if (&other == this) {
      return *this;
    }
  
    if (_value != nullptr) {
      _value->release();
    }
  
    _value = other._value;
    other._value = nullptr;
  
    _result = std::move(other._result);
  
    return *this;
  }
  
  Finding::~Finding() {
    if (_value != nullptr) {
      _value->release();
    }
  }
  
  void Finding::release() {
    if (_value != nullptr) {
      _value->release();
      // reset value so we do not unintentionally release multiple times
      _value = nullptr;
    }
  }
  
  void Finding::set(CachedValue* v) {
    TRI_ASSERT(_value == nullptr);
    _value = v;
    if (v != nullptr) {
      _value->lease();
    }
  }
  
  void Finding::reset(CachedValue* v) {
    if (_value != nullptr) {
      _value->release();
    }
  
    _value = v;
    if (_value != nullptr) {
      _value->lease();
    }
  }
  
  void Finding::reportError(Result const& r) { _result = r; }
  
  bool Finding::found() const { return (_value != nullptr); }
  
  CachedValue const* Finding::value() const { return _value; }
  
  CachedValue* Finding::copy() const {
    return ((_value == nullptr) ? nullptr : _value->copy());
  }
  
  Result const& Finding::result() const { return _result; }
  
  }  // namespace arangodb::cache
  