text: // Licensed to the Apache Software Foundation (ASF) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The ASF licenses this file
  // to you 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.
  
  #pragma once
  
  #include <memory>
  #include <string>
  
  #include "arrow/dbi/hiveserver2/columnar_row_set.h"
  #include "arrow/dbi/hiveserver2/operation.h"
  #include "arrow/dbi/hiveserver2/service.h"
  #include "arrow/dbi/hiveserver2/types.h"
  
  #include "arrow/dbi/hiveserver2/ImpalaHiveServer2Service.h"
  #include "arrow/dbi/hiveserver2/TCLIService.h"
  
  namespace arrow {
  namespace hiveserver2 {
  
  // PIMPL structs.
  struct ColumnarRowSet::ColumnarRowSetImpl {
    apache::hive::service::cli::thrift::TFetchResultsResp resp;
  };
  
  struct Operation::OperationImpl {
    apache::hive::service::cli::thrift::TOperationHandle handle;
    apache::hive::service::cli::thrift::TSessionHandle session_handle;
  };
  
  struct ThriftRPC {
    std::unique_ptr<impala::ImpalaHiveServer2ServiceClient> client;
  };
  
  const std::string OperationStateToString(const Operation::State& state);
  
  const std::string TypeIdToString(const ColumnType::TypeId& type_id);
  
  // Functions for converting Thrift object to hs2client objects and vice-versa.
  apache::hive::service::cli::thrift::TFetchOrientation::type
  FetchOrientationToTFetchOrientation(FetchOrientation orientation);
  
  apache::hive::service::cli::thrift::TProtocolVersion::type
  ProtocolVersionToTProtocolVersion(ProtocolVersion protocol);
  
  Operation::State TOperationStateToOperationState(
      const apache::hive::service::cli::thrift::TOperationState::type& tstate);
  
  Status TStatusToStatus(const apache::hive::service::cli::thrift::TStatus& tstatus);
  
  // Converts a TTypeDesc to a ColumnType. Currently only primitive types are supported.
  // The converted type is returned as a pointer to allow for polymorphism with ColumnType
  // and its subclasses.
  std::unique_ptr<ColumnType> TTypeDescToColumnType(
      const apache::hive::service::cli::thrift::TTypeDesc& ttype_desc);
  
  ColumnType::TypeId TTypeIdToTypeId(
      const apache::hive::service::cli::thrift::TTypeId::type& type_id);
  
  }  // namespace hiveserver2
  }  // namespace arrow
  
  #define TRY_RPC_OR_RETURN(rpc)                  \
    do {                                          \
      try {                                       \
        (rpc);                                    \
      } catch (apache::thrift::TException & tx) { \
        return Status::IOError(tx.what());        \
      }                                           \
    } while (0)
  
  #define THRIFT_RETURN_NOT_OK(tstatus)                                       \
    do {                                                                      \
      if (tstatus.statusCode != hs2::TStatusCode::SUCCESS_STATUS &&           \
          tstatus.statusCode != hs2::TStatusCode::SUCCESS_WITH_INFO_STATUS) { \
        return TStatusToStatus(tstatus);                                      \
      }                                                                       \
    } while (0)
  