96 lines
3.3 KiB
C++
96 lines
3.3 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/exprs/table_function/vexplode.h"
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#include <glog/logging.h>
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#include <ostream>
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#include <vector>
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#include "common/status.h"
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#include "vec/columns/column.h"
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#include "vec/common/string_ref.h"
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#include "vec/core/block.h"
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#include "vec/core/column_with_type_and_name.h"
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#include "vec/exprs/vexpr.h"
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#include "vec/exprs/vexpr_context.h"
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namespace doris::vectorized {
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VExplodeTableFunction::VExplodeTableFunction() {
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_fn_name = "vexplode";
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}
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Status VExplodeTableFunction::process_init(Block* block, RuntimeState* state) {
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CHECK(_expr_context->root()->children().size() == 1)
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<< "VExplodeTableFunction only support 1 child but has "
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<< _expr_context->root()->children().size();
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int value_column_idx = -1;
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RETURN_IF_ERROR(_expr_context->root()->children()[0]->execute(_expr_context.get(), block,
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&value_column_idx));
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_array_column =
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block->get_by_position(value_column_idx).column->convert_to_full_column_if_const();
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if (!extract_column_array_info(*_array_column, _detail)) {
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return Status::NotSupported("column type {} not supported now",
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block->get_by_position(value_column_idx).column->get_name());
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}
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return Status::OK();
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}
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Status VExplodeTableFunction::process_row(size_t row_idx) {
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DCHECK(row_idx < _array_column->size());
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RETURN_IF_ERROR(TableFunction::process_row(row_idx));
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if (!_detail.array_nullmap_data || !_detail.array_nullmap_data[row_idx]) {
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_array_offset = (*_detail.offsets_ptr)[row_idx - 1];
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_cur_size = (*_detail.offsets_ptr)[row_idx] - _array_offset;
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}
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return Status::OK();
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}
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Status VExplodeTableFunction::process_close() {
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_array_column = nullptr;
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_detail.reset();
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_array_offset = 0;
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return Status::OK();
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}
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void VExplodeTableFunction::get_value(MutableColumnPtr& column) {
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size_t pos = _array_offset + _cur_offset;
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if (current_empty() || (_detail.nested_nullmap_data && _detail.nested_nullmap_data[pos])) {
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column->insert_default();
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} else {
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if (_is_nullable) {
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assert_cast<ColumnNullable*>(column.get())
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->get_nested_column_ptr()
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->insert_from(*_detail.nested_col, pos);
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assert_cast<ColumnUInt8*>(
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assert_cast<ColumnNullable*>(column.get())->get_null_map_column_ptr().get())
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->insert_default();
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} else {
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column->insert_from(*_detail.nested_col, pos);
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}
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}
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}
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} // namespace doris::vectorized
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