mirror of https://gitee.com/bigwinds/arangodb
110 lines
2.6 KiB
C++
110 lines
2.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014-2017 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 Daniel H. Larkin
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include "Cache/Finding.h"
|
|
#include "Cache/CachedValue.h"
|
|
|
|
using namespace arangodb;
|
|
using 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; }
|