// 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.

#include "exprs/aggregate/aggregate_function_linear_histogram.h"

#include "exprs/aggregate/helpers.h"

namespace doris {

#include "common/compile_check_begin.h"

const std::string AggregateFunctionLinearHistogramConsts::NAME = "linear_histogram";

template <PrimitiveType T, typename Data>

using HistogramWithInputParam = AggregateFunctionLinearHistogram<T, Data, true>;

template <PrimitiveType T, typename Data>

using HistogramNormal = AggregateFunctionLinearHistogram<T, Data, false>;

AggregateFunctionPtr create_aggregate_function_linear_histogram(const std::string& name,

                                                                const DataTypes& argument_types,

                                                                const DataTypePtr& result_type,

                                                                const bool result_is_nullable,

                                                                const AggregateFunctionAttr& attr) {

    using creator = creator_with_type_list<TYPE_TINYINT, TYPE_SMALLINT, TYPE_INT, TYPE_BIGINT,

                                           TYPE_LARGEINT, TYPE_FLOAT, TYPE_DOUBLE, TYPE_DECIMAL32,

                                           TYPE_DECIMAL64, TYPE_DECIMAL128I, TYPE_DECIMAL256>;

    bool has_offset = (argument_types.size() == 3);

    if (has_offset) {

        return creator::create<HistogramWithInputParam, AggregateFunctionLinearHistogramData>(

                argument_types, result_is_nullable, attr);

    } else {

        return creator::create<HistogramNormal, AggregateFunctionLinearHistogramData>(

                argument_types, result_is_nullable, attr);

    }

}

void register_aggregate_function_linear_histogram(AggregateFunctionSimpleFactory& factory) {

    factory.register_function_both(AggregateFunctionLinearHistogramConsts::NAME,

                                   create_aggregate_function_linear_histogram);

}

} // namespace doris