mirror of https://gitee.com/bigwinds/arangodb
109 lines
3.0 KiB
C++
109 lines
3.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_MMFILES_DOCUMENT_OPERATION_H
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#define ARANGOD_MMFILES_DOCUMENT_OPERATION_H 1
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#include "Basics/Common.h"
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#include "Basics/debugging.h"
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#include "VocBase/LocalDocumentId.h"
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#include "VocBase/voc-types.h"
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namespace arangodb {
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class LogicalCollection;
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namespace transaction {
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class Methods;
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}
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struct MMFilesDocumentDescriptor {
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MMFilesDocumentDescriptor() : _localDocumentId(), _vpack(nullptr) {}
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MMFilesDocumentDescriptor(LocalDocumentId const& documentId, uint8_t const* vpack)
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: _localDocumentId(documentId), _vpack(vpack) {}
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bool empty() const { return _vpack == nullptr; }
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void reset(MMFilesDocumentDescriptor const& other) {
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_localDocumentId = other._localDocumentId;
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_vpack = other._vpack;
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}
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void clear() {
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_localDocumentId.clear();
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_vpack = nullptr;
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}
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LocalDocumentId _localDocumentId;
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uint8_t const* _vpack;
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};
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struct MMFilesDocumentOperation {
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enum class StatusType : uint8_t {
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CREATED,
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INDEXED,
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HANDLED,
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SWAPPED,
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REVERTED
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};
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MMFilesDocumentOperation(LogicalCollection* collection, TRI_voc_document_operation_e type);
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~MMFilesDocumentOperation();
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MMFilesDocumentOperation* clone();
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void swapped();
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void setDocumentIds(MMFilesDocumentDescriptor const& oldRevision,
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MMFilesDocumentDescriptor const& newRevision);
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void setVPack(uint8_t const* vpack);
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TRI_voc_document_operation_e type() const { return _type; }
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LogicalCollection* collection() const { return _collection; }
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void indexed() noexcept {
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TRI_ASSERT(_status == StatusType::CREATED);
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_status = StatusType::INDEXED;
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}
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void handled() noexcept {
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TRI_ASSERT(!_oldRevision.empty() || !_newRevision.empty());
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TRI_ASSERT(_status == StatusType::INDEXED);
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_status = StatusType::HANDLED;
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}
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void revert(transaction::Methods*);
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private:
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LogicalCollection* _collection;
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MMFilesDocumentDescriptor _oldRevision;
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MMFilesDocumentDescriptor _newRevision;
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TRI_voc_document_operation_e _type;
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StatusType _status;
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};
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} // namespace arangodb
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#endif
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