// 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.

// This file is copied from

// https://github.com/ClickHouse/ClickHouse/blob/master/src/AggregateFunctions/AggregateFunctionCount.cpp

// and modified by Doris

#include "exprs/aggregate/aggregate_function_count.h"

#include <string>

#include "exprs/aggregate/aggregate_function_simple_factory.h"

#include "exprs/aggregate/factory_helpers.h"

namespace doris {

#include "common/compile_check_begin.h"

AggregateFunctionPtr create_aggregate_function_count(const std::string& name,

                                                     const DataTypes& argument_types,

                                                     const DataTypePtr& result_type,

                                                     const bool result_is_nullable,

                                                     const AggregateFunctionAttr& attr) {

    assert_arity_range(name, argument_types, 0, 1);

    return std::make_shared<AggregateFunctionCount>(argument_types);

}

AggregateFunctionPtr create_aggregate_function_count_not_null_unary(

        const std::string& name, const DataTypes& argument_types, const DataTypePtr& result_type,

        const bool result_is_nullable, const AggregateFunctionAttr& attr) {

    assert_arity_range(name, argument_types, 0, 1);

    return std::make_shared<AggregateFunctionCountNotNullUnary>(argument_types);

}

void register_aggregate_function_count(AggregateFunctionSimpleFactory& factory) {

    factory.register_function("count", create_aggregate_function_count);

    factory.register_function("count", create_aggregate_function_count_not_null_unary, true);

}

} // namespace doris