cf5d194fe1
In old Doris version string offsets are 32bit, but it is not enough for Array type. If we change string offsets from 32bit to 64bit, there will be problem if we upgrade BE one by one. Because at the same time 32bit Offsets and 64 bit Offsets String will exist at the same time. As a result, we separate the Codes for Array Offsets. Co-authored-by: cambyzju <zhuxiaoli01@baidu.com>
93 lines
3.9 KiB
C++
93 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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// This file is copied from
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// https://github.com/ClickHouse/ClickHouse/blob/master/src/Functions/array/arrayReverse.cpp
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// and modified by Doris
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#pragma once
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#include "vec/columns/column_array.h"
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#include "vec/columns/column_const.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/array/function_array_utils.h"
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namespace doris::vectorized {
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struct ArrayReverseImpl {
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static Status _execute(Block& block, const ColumnNumbers& arguments, size_t result,
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size_t input_rows_count) {
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ColumnPtr src_column =
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block.get_by_position(arguments[0]).column->convert_to_full_column_if_const();
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ColumnArrayExecutionData src;
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if (!extract_column_array_info(*src_column, src)) {
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return Status::RuntimeError(
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fmt::format("execute failed, unsupported types for function {}({})", "reverse",
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block.get_by_position(arguments[0]).type->get_name()));
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}
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bool is_nullable = src.nested_nullmap_data ? true : false;
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ColumnArrayMutableData dst = create_mutable_data(src.nested_col, is_nullable);
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dst.offsets_ptr->reserve(input_rows_count);
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auto res_val = _execute_internal(*src.nested_col, *src.offsets_ptr, *dst.nested_col,
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*dst.offsets_ptr, src.nested_nullmap_data,
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dst.nested_nullmap_data);
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if (!res_val) {
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return Status::RuntimeError(
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fmt::format("execute failed or unsupported types for function {}({})",
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"reverse", block.get_by_position(arguments[0]).type->get_name()));
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}
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ColumnPtr res_column = assemble_column_array(dst);
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block.replace_by_position(result, std::move(res_column));
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return Status::OK();
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}
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static bool _execute_internal(const IColumn& src_column,
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const ColumnArray::Offsets64& src_offsets, IColumn& dest_column,
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ColumnArray::Offsets64& dest_offsets, const UInt8* src_null_map,
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ColumnUInt8::Container* dest_null_map) {
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size_t prev_src_offset = 0;
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for (auto curr_src_offset : src_offsets) {
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size_t array_size = curr_src_offset - prev_src_offset;
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for (size_t j = 0; j < array_size; ++j) {
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size_t j_reverse = curr_src_offset - j - 1;
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if (src_null_map && src_null_map[j_reverse]) {
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DCHECK(dest_null_map != nullptr);
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// Note: here we need to insert default value
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dest_column.insert_default();
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(*dest_null_map).push_back(true);
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continue;
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}
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dest_column.insert_from(src_column, j_reverse);
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if (dest_null_map) {
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(*dest_null_map).push_back(false);
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}
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}
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dest_offsets.push_back(curr_src_offset);
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prev_src_offset = curr_src_offset;
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}
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return true;
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}
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};
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} // namespace doris::vectorized
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