91 lines
3.9 KiB
C++
91 lines
3.9 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/columns/column_array.h>
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#include <vec/columns/column_nullable.h>
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#include <vec/columns/columns_number.h>
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#include <vec/data_types/data_type_array.h>
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#include <vec/data_types/data_type_number.h>
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#include <vec/functions/function.h>
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#include <vec/functions/function_helpers.h>
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#include <vec/functions/simple_function_factory.h>
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#include <vec/utils/util.hpp>
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namespace doris::vectorized {
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// array_exists([1, 2, 3, 0]) -> [1, 1, 1, 0]
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class FunctionArrayExists : public IFunction {
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public:
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static constexpr auto name = "array_exists";
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static FunctionPtr create() { return std::make_shared<FunctionArrayExists>(); }
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String get_name() const override { return name; }
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size_t get_number_of_arguments() const override { return 1; }
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DataTypePtr get_return_type_impl(const DataTypes& arguments) const override {
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DCHECK(is_array(arguments[0]))
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<< "first argument for function: " << name << " should be DataTypeArray"
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<< " and arguments[0] is " << arguments[0]->get_name();
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return arguments[0];
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}
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Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments,
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size_t result, size_t input_rows_count) override {
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// 1. get first array column
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const auto first_column =
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block.get_by_position(arguments[0]).column->convert_to_full_column_if_const();
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const ColumnArray& first_col_array = assert_cast<const ColumnArray&>(*first_column);
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const auto& first_off_data = assert_cast<const ColumnArray::ColumnOffsets&>(
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first_col_array.get_offsets_column());
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const auto& nested_nullable_column =
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assert_cast<const ColumnNullable&>(*first_col_array.get_data_ptr());
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const auto nested_column = nested_nullable_column.get_nested_column_ptr();
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const size_t nested_column_size = nested_column->size();
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MutableColumnPtr result_null_map =
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nested_nullable_column.get_null_map_column_ptr()->clone_resized(nested_column_size);
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// 2. compute result
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MutableColumnPtr result_column = ColumnUInt8::create(nested_column_size, 0);
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auto* __restrict result_column_data =
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assert_cast<ColumnUInt8&>(*result_column).get_data().data();
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MutableColumnPtr result_offset_column = first_off_data.clone_resized(first_off_data.size());
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const auto* __restrict nested_column_data =
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assert_cast<const ColumnUInt8&>(*nested_column).get_data().data();
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for (size_t row = 0; row < nested_column_size; ++row) {
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result_column_data[row] = nested_column_data[row] != 0;
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}
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ColumnPtr result_nullalble_column =
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ColumnNullable::create(std::move(result_column), std::move(result_null_map));
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ColumnPtr column_array =
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ColumnArray::create(result_nullalble_column, std::move(result_offset_column));
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block.replace_by_position(result, column_array);
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return Status::OK();
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}
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};
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void register_function_array_exists(SimpleFunctionFactory& factory) {
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factory.register_function<FunctionArrayExists>();
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}
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} // namespace doris::vectorized
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