48 lines
2.1 KiB
C++
48 lines
2.1 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include <vec/aggregate_functions/aggregate_function_topn.h>
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namespace doris::vectorized {
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AggregateFunctionPtr create_aggregate_function_topn(const std::string& name,
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const DataTypes& argument_types,
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const Array& parameters,
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const bool result_is_nullable) {
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if (argument_types.size() == 1) {
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return AggregateFunctionPtr(
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new AggregateFunctionTopN<AggregateFunctionTopNImplEmpty>(argument_types));
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} else if (argument_types.size() == 2) {
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return AggregateFunctionPtr(
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new AggregateFunctionTopN<AggregateFunctionTopNImplInt<StringDataImplTopN>>(
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argument_types));
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} else if (argument_types.size() == 3) {
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return AggregateFunctionPtr(
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new AggregateFunctionTopN<AggregateFunctionTopNImplIntInt<StringDataImplTopN>>(
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argument_types));
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}
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LOG(WARNING) << fmt::format("Illegal number {} of argument for aggregate function {}",
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argument_types.size(), name);
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return nullptr;
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}
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void register_aggregate_function_topn(AggregateFunctionSimpleFactory& factory) {
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factory.register_function("topn", create_aggregate_function_topn);
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}
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} // namespace doris::vectorized
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