| /** |
| * Copyright 2015 Pivotal Software, Inc. |
| * |
| * 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. |
| **/ |
| |
| #include "expressions/aggregation/AggregateFunctionFactory.hpp" |
| |
| #include <string> |
| #include <type_traits> |
| |
| #include "expressions/aggregation/AggregateFunction.pb.h" |
| #include "expressions/aggregation/AggregateFunctionAvg.hpp" |
| #include "expressions/aggregation/AggregateFunctionCount.hpp" |
| #include "expressions/aggregation/AggregateFunctionMax.hpp" |
| #include "expressions/aggregation/AggregateFunctionMin.hpp" |
| #include "expressions/aggregation/AggregateFunctionSum.hpp" |
| #include "expressions/aggregation/AggregationID.hpp" |
| |
| #include "glog/logging.h" |
| |
| namespace quickstep { |
| |
| const AggregateFunction& AggregateFunctionFactory::Get( |
| const AggregationID agg_id) { |
| switch (agg_id) { |
| case AggregationID::kAvg: |
| return AggregateFunctionAvg::Instance(); |
| case AggregationID::kCount: |
| return AggregateFunctionCount::Instance(); |
| case AggregationID::kMax: |
| return AggregateFunctionMax::Instance(); |
| case AggregationID::kMin: |
| return AggregateFunctionMin::Instance(); |
| case AggregationID::kSum: |
| return AggregateFunctionSum::Instance(); |
| default: { |
| LOG(FATAL) << "Unrecognized AggregationID: " |
| << static_cast<std::underlying_type<AggregationID>::type>(agg_id); |
| } |
| } |
| } |
| |
| const AggregateFunction* AggregateFunctionFactory::GetByName(const std::string &name) { |
| if (name == "avg") { |
| return &AggregateFunctionAvg::Instance(); |
| } else if (name == "count") { |
| return &AggregateFunctionCount::Instance(); |
| } else if (name == "max") { |
| return &AggregateFunctionMax::Instance(); |
| } else if (name == "min") { |
| return &AggregateFunctionMin::Instance(); |
| } else if (name == "sum") { |
| return &AggregateFunctionSum::Instance(); |
| } else { |
| return nullptr; |
| } |
| } |
| |
| bool AggregateFunctionFactory::ProtoIsValid( |
| const serialization::AggregateFunction &proto) { |
| return proto.IsInitialized() |
| && serialization::AggregateFunction::AggregationID_IsValid(proto.aggregation_id()); |
| } |
| |
| const AggregateFunction& AggregateFunctionFactory::ReconstructFromProto( |
| const serialization::AggregateFunction &proto) { |
| DCHECK(ProtoIsValid(proto)) |
| << "Attempted to reconstruct an AggregateFunction from an invalid proto:\n" |
| << proto.DebugString(); |
| |
| switch (proto.aggregation_id()) { |
| case serialization::AggregateFunction::AVG: |
| return AggregateFunctionAvg::Instance(); |
| case serialization::AggregateFunction::COUNT: |
| return AggregateFunctionCount::Instance(); |
| case serialization::AggregateFunction::MAX: |
| return AggregateFunctionMax::Instance(); |
| case serialization::AggregateFunction::MIN: |
| return AggregateFunctionMin::Instance(); |
| case serialization::AggregateFunction::SUM: |
| return AggregateFunctionSum::Instance(); |
| default: { |
| LOG(FATAL) << "Unrecognized serialization::AggregateFunction::AggregationID: " |
| << proto.aggregation_id() |
| << "\nFull proto debug string:\n" |
| << proto.DebugString(); |
| } |
| } |
| } |
| |
| } // namespace quickstep |