text: ////////////////////////////////////////////////////////////////////////////////
  /// DISCLAIMER
  ///
  /// Copyright 2018 ArangoDB 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 Simon Grätzer
  ////////////////////////////////////////////////////////////////////////////////
  
  #ifndef ARANGOD_CLUSTER_CLUSTER_TRANSACTION_STATE_H
  #define ARANGOD_CLUSTER_CLUSTER_TRANSACTION_STATE_H 1
  
  #include "StorageEngine/TransactionState.h"
  
  namespace arangodb {
  
  /// @brief transaction type
  class ClusterTransactionState final : public TransactionState {
   public:
    ClusterTransactionState(TRI_vocbase_t& vocbase, TRI_voc_tid_t tid,
                            transaction::Options const& options);
    ~ClusterTransactionState() {}
  
    /// @brief begin a transaction
    Result beginTransaction(transaction::Hints hints) override;
  
    /// @brief commit a transaction
    Result commitTransaction(transaction::Methods* trx) override;
  
    /// @brief abort a transaction
    Result abortTransaction(transaction::Methods* trx) override;
  
    bool hasFailedOperations() const override { return false; }
  };
  
  }  // namespace arangodb
  
  #endif
  