Files
doris/be/src/vec/exprs/table_function/vexplode.cpp
AlexYue 8b10a1a3f7 [enhancement](VSlotRef) enhance column_id check in execute function during runtime (#11862)
The column id check in VSlotRef::execute function before is too strict for fuzzy test to continuously produce random query. Temporarily loosen the check logic.
Moreover, there exists some careless call to VExpr::get_const_col, it might return a nullptr but not every function call checks if it's valid. It's an underlying problem.
2022-08-18 09:12:26 +08:00

111 lines
3.4 KiB
C++

// Licensed to the Apache Software Foundation (ASF) under one
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// 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,
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// specific language governing permissions and limitations
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#include "vec/exprs/table_function/vexplode.h"
#include "common/status.h"
#include "vec/exprs/vexpr.h"
namespace doris::vectorized {
VExplodeTableFunction::VExplodeTableFunction() {
_fn_name = "vexplode";
}
Status VExplodeTableFunction::process_init(vectorized::Block* block) {
CHECK(_vexpr_context->root()->children().size() == 1)
<< "VExplodeTableFunction only support 1 child but has "
<< _vexpr_context->root()->children().size();
int value_column_idx = -1;
RETURN_IF_ERROR(_vexpr_context->root()->children()[0]->execute(_vexpr_context, block,
&value_column_idx));
_array_column =
block->get_by_position(value_column_idx).column->convert_to_full_column_if_const();
if (!extract_column_array_info(*_array_column, _detail)) {
return Status::NotSupported("column type {} not supported now",
block->get_by_position(value_column_idx).column->get_name());
}
return Status::OK();
}
Status VExplodeTableFunction::process_row(size_t row_idx) {
DCHECK(row_idx < _array_column->size());
_is_current_empty = false;
_eos = false;
_cur_offset = 0;
_array_offset = (*_detail.offsets_ptr)[row_idx - 1];
_cur_size = (*_detail.offsets_ptr)[row_idx] - _array_offset;
// array is NULL, or array is empty
if (_cur_size == 0 || (_detail.array_nullmap_data && _detail.array_nullmap_data[row_idx])) {
_is_current_empty = true;
}
return Status::OK();
}
Status VExplodeTableFunction::process_close() {
_array_column = nullptr;
_detail.reset();
_array_offset = 0;
return Status::OK();
}
Status VExplodeTableFunction::reset() {
_eos = false;
_cur_offset = 0;
return Status::OK();
}
Status VExplodeTableFunction::get_value(void** output) {
if (_is_current_empty) {
*output = nullptr;
return Status::OK();
}
size_t pos = _array_offset + _cur_offset;
if (_detail.nested_nullmap_data && _detail.nested_nullmap_data[pos]) {
*output = nullptr;
} else {
*output = const_cast<char*>(_detail.nested_col->get_data_at(pos).data);
}
return Status::OK();
}
Status VExplodeTableFunction::get_value_length(int64_t* length) {
if (_is_current_empty) {
*length = -1;
return Status::OK();
}
size_t pos = _array_offset + _cur_offset;
if (_detail.nested_nullmap_data && _detail.nested_nullmap_data[pos]) {
*length = 0;
} else {
*length = _detail.nested_col->get_data_at(pos).size;
}
return Status::OK();
}
} // namespace doris::vectorized