github-actions[bot] commented on code in PR #45492:
URL: https://github.com/apache/doris/pull/45492#discussion_r1886886120
##########
be/src/olap/rowset/segment_v2/column_reader.cpp:
##########
@@ -220,6 +222,146 @@ Status ColumnReader::create_agg_state(const
ColumnReaderOptions& opts, const Col
agg_state_type->get_name(), int(type));
}
+const SubcolumnColumnReaders::Node* VariantColumnReader::get_reader_by_path(
+ const vectorized::PathInData& relative_path) const {
+ return _subcolumn_readers->find_leaf(relative_path);
+}
+
+Status VariantColumnReader::new_iterator(ColumnIterator** iterator,
Review Comment:
warning: function 'new_iterator' has cognitive complexity of 51 (threshold
50) [readability-function-cognitive-complexity]
```cpp
Status VariantColumnReader::new_iterator(ColumnIterator** iterator,
^
```
<details>
<summary>Additional context</summary>
**be/src/olap/rowset/segment_v2/column_reader.cpp:237:** +1, including
nesting penalty of 0, nesting level increased to 1
```cpp
if (node != nullptr) {
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:238:** +2, including
nesting penalty of 1, nesting level increased to 2
```cpp
if (node->is_leaf_node()) {
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:242:** +3, including
nesting penalty of 2, nesting level increased to 3
```cpp
RETURN_IF_ERROR(node->data.reader->new_iterator(iterator));
^
```
**be/src/common/status.h:632:** expanded from macro 'RETURN_IF_ERROR'
```cpp
do { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:242:** +4, including
nesting penalty of 3, nesting level increased to 4
```cpp
RETURN_IF_ERROR(node->data.reader->new_iterator(iterator));
^
```
**be/src/common/status.h:634:** expanded from macro 'RETURN_IF_ERROR'
```cpp
if (UNLIKELY(!_status_.ok())) { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:243:** +1, nesting level
increased to 2
```cpp
} else {
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:247:** +3, including
nesting penalty of 2, nesting level increased to 3
```cpp
if (!_sparse_column_set_in_stats.empty()) {
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:250:** +4, including
nesting penalty of 3, nesting level increased to 4
```cpp
RETURN_IF_ERROR(_sparse_column_reader->new_iterator(&iter));
^
```
**be/src/common/status.h:632:** expanded from macro 'RETURN_IF_ERROR'
```cpp
do { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:250:** +5, including
nesting penalty of 4, nesting level increased to 5
```cpp
RETURN_IF_ERROR(_sparse_column_reader->new_iterator(&iter));
^
```
**be/src/common/status.h:634:** expanded from macro 'RETURN_IF_ERROR'
```cpp
if (UNLIKELY(!_status_.ok())) { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:255:** +3, including
nesting penalty of 2, nesting level increased to 3
```cpp
(relative_path == root->path) ?
HierarchicalDataReader::ReadType::MERGE_ROOT
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:257:** +3, including
nesting penalty of 2, nesting level increased to 3
```cpp
RETURN_IF_ERROR(HierarchicalDataReader::create(iterator,
relative_path, node, root,
^
```
**be/src/common/status.h:632:** expanded from macro 'RETURN_IF_ERROR'
```cpp
do { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:257:** +4, including
nesting penalty of 3, nesting level increased to 4
```cpp
RETURN_IF_ERROR(HierarchicalDataReader::create(iterator,
relative_path, node, root,
^
```
**be/src/common/status.h:634:** expanded from macro 'RETURN_IF_ERROR'
```cpp
if (UNLIKELY(!_status_.ok())) { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:260:** +1, nesting level
increased to 1
```cpp
} else {
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:261:** +2, including
nesting penalty of 1, nesting level increased to 2
```cpp
if (_sparse_column_set_in_stats.contains(StringRef
{relative_path.get_path()}) ||
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:266:** +3, including
nesting penalty of 2, nesting level increased to 3
```cpp
RETURN_IF_ERROR(_sparse_column_reader->new_iterator(&inner_iter));
^
```
**be/src/common/status.h:632:** expanded from macro 'RETURN_IF_ERROR'
```cpp
do { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:266:** +4, including
nesting penalty of 3, nesting level increased to 4
```cpp
RETURN_IF_ERROR(_sparse_column_reader->new_iterator(&inner_iter));
^
```
**be/src/common/status.h:634:** expanded from macro 'RETURN_IF_ERROR'
```cpp
if (UNLIKELY(!_status_.ok())) { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:269:** +1, nesting level
increased to 2
```cpp
} else {
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:272:** +3, including
nesting penalty of 2, nesting level increased to 3
```cpp
RETURN_IF_ERROR(Segment::new_default_iterator(target_col,
&iter));
^
```
**be/src/common/status.h:632:** expanded from macro 'RETURN_IF_ERROR'
```cpp
do { \
^
```
**be/src/olap/rowset/segment_v2/column_reader.cpp:272:** +4, including
nesting penalty of 3, nesting level increased to 4
```cpp
RETURN_IF_ERROR(Segment::new_default_iterator(target_col,
&iter));
^
```
**be/src/common/status.h:634:** expanded from macro 'RETURN_IF_ERROR'
```cpp
if (UNLIKELY(!_status_.ok())) { \
^
```
</details>
##########
be/src/vec/columns/column_object.cpp:
##########
@@ -1717,89 +1776,203 @@ void get_json_by_column_tree(rapidjson::Value& root,
rapidjson::Document::Alloca
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, std::string*
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- rapidjson::StringBuffer buf;
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
*output = type->to_string(*get_root(), row);
return Status::OK();
}
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- // TODO avoid copy
- *output = std::string(buf.GetString(), buf.GetSize());
+ // TODO preallocate memory
+ auto tmp_col = ColumnString::create();
+ VectorBufferWriter write_buffer(*tmp_col.get());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, write_buffer,
nullptr));
+ write_buffer.commit();
+ auto str_ref = tmp_col->get_data_at(0);
+ *output = std::string(str_ref.data, str_ref.size);
return Status::OK();
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, BufferWritable&
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
type->to_string(*get_root(), row, output);
return Status::OK();
}
- rapidjson::StringBuffer buf;
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- output.write(buf.GetString(), buf.GetLength());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, output, nullptr));
return Status::OK();
}
-Status ColumnObject::serialize_one_row_to_json_format(int64_t row,
rapidjson::StringBuffer* output,
- bool* is_null) const {
- CHECK(is_finalized());
- if (subcolumns.empty()) {
- if (is_null != nullptr) {
- *is_null = true;
- } else {
- rapidjson::Value root(rapidjson::kNullType);
- rapidjson::Writer<rapidjson::StringBuffer> writer(*output);
- if (!root.Accept(writer)) {
- return Status::InternalError("Failed to serialize json value");
+/// Struct that represents elements of the JSON path.
+/// "a.b.c" -> ["a", "b", "c"]
+struct PathElements {
+ explicit PathElements(const String& path) {
+ const char* start = path.data();
+ const char* end = start + path.size();
+ const char* pos = start;
+ const char* last_dot_pos = pos - 1;
+ for (pos = start; pos != end; ++pos) {
+ if (*pos == '.') {
+ elements.emplace_back(last_dot_pos + 1, size_t(pos -
last_dot_pos - 1));
+ last_dot_pos = pos;
}
}
- return Status::OK();
+
+ elements.emplace_back(last_dot_pos + 1, size_t(pos - last_dot_pos -
1));
}
- CHECK(size() > row);
- rapidjson::StringBuffer buffer;
- rapidjson::Value root(rapidjson::kNullType);
- if (doc_structure == nullptr) {
- doc_structure = std::make_shared<rapidjson::Document>();
- rapidjson::Document::AllocatorType& allocator =
doc_structure->GetAllocator();
- get_json_by_column_tree(*doc_structure, allocator,
subcolumns.get_root());
+
+ size_t size() const { return elements.size(); }
+
+ std::vector<std::string_view> elements;
+};
+
+/// Struct that represents a prefix of a JSON path. Used during output of the
JSON object.
+struct Prefix {
+ /// Shrink current prefix to the common prefix of current prefix and
specified path.
+ /// For example, if current prefix is a.b.c.d and path is a.b.e, then
shrink the prefix to a.b.
+ void shrink_to_common_prefix(const PathElements& path_elements) {
+ /// Don't include last element in path_elements in the prefix.
+ size_t i = 0;
+ while (i != elements.size() && i != (path_elements.elements.size() -
1) &&
+ elements[i].first == path_elements.elements[i])
+ ++i;
Review Comment:
warning: statement should be inside braces
[readability-braces-around-statements]
```suggestion
elements[i].first == path_elements.elements[i]) {
++i;
}
```
##########
be/src/olap/rowset/segment_v2/hierarchical_data_reader.cpp:
##########
@@ -150,95 +156,295 @@ ordinal_t HierarchicalDataReader::get_current_ordinal()
const {
return (*_substream_reader.begin())->data.iterator->get_current_ordinal();
}
-Status ExtractReader::init(const ColumnIteratorOptions& opts) {
- if (!_root_reader->inited) {
- RETURN_IF_ERROR(_root_reader->iterator->init(opts));
- _root_reader->inited = true;
+Status HierarchicalDataReader::_process_sub_columns(
+ vectorized::ColumnObject& container_variant,
+ const vectorized::PathsWithColumnAndType& non_nested_subcolumns) {
+ for (const auto& entry : non_nested_subcolumns) {
+ DCHECK(!entry.path.has_nested_part());
+ bool add = container_variant.add_sub_column(entry.path,
entry.column->assume_mutable(),
+ entry.type);
+ if (!add) {
+ return Status::InternalError("Duplicated {}, type {}",
entry.path.get_path(),
+ entry.type->get_name());
+ }
}
return Status::OK();
}
-Status ExtractReader::seek_to_first() {
- LOG(FATAL) << "Not implemented";
- __builtin_unreachable();
+Status HierarchicalDataReader::_process_nested_columns(
+ vectorized::ColumnObject& container_variant,
+ const std::map<vectorized::PathInData,
vectorized::PathsWithColumnAndType>&
+ nested_subcolumns) {
+ using namespace vectorized;
+ // Iterate nested subcolumns and flatten them, the entry contains the
nested subcolumns of the same nested parent
+ // first we pick the first subcolumn as base array and using it's offset
info. Then we flatten all nested subcolumns
+ // into a new object column and wrap it with array column using the first
element offsets.The wrapped array column
+ // will type the type of ColumnObject::NESTED_TYPE, whih is
Nullable<ColumnArray<NULLABLE(ColumnObject)>>.
+ for (const auto& entry : nested_subcolumns) {
+ MutableColumnPtr nested_object = ColumnObject::create(true, false);
+ const auto* base_array =
+
check_and_get_column<ColumnArray>(remove_nullable(entry.second[0].column));
+ MutableColumnPtr offset =
base_array->get_offsets_ptr()->assume_mutable();
+ auto* nested_object_ptr =
assert_cast<ColumnObject*>(nested_object.get());
+ // flatten nested arrays
+ for (const auto& subcolumn : entry.second) {
+ const auto& column = subcolumn.column;
+ const auto& type = subcolumn.type;
+ if (!remove_nullable(column)->is_column_array()) {
+ return Status::InvalidArgument(
+ "Meet none array column when flatten nested array,
path {}, type {}",
+ subcolumn.path.get_path(), subcolumn.type->get_name());
+ }
+ const auto* target_array =
+
check_and_get_column<ColumnArray>(remove_nullable(subcolumn.column).get());
+#ifndef NDEBUG
+ if (!base_array->has_equal_offsets(*target_array)) {
+ return Status::InvalidArgument(
+ "Meet none equal offsets array when flatten nested
array, path {}, "
+ "type {}",
+ subcolumn.path.get_path(), subcolumn.type->get_name());
+ }
+#endif
+ MutableColumnPtr flattend_column =
target_array->get_data_ptr()->assume_mutable();
+ DataTypePtr flattend_type =
+
check_and_get_data_type<DataTypeArray>(remove_nullable(type).get())
+ ->get_nested_type();
+ // add sub path without parent prefix
+ nested_object_ptr->add_sub_column(
+
subcolumn.path.copy_pop_nfront(entry.first.get_parts().size()),
+ std::move(flattend_column), std::move(flattend_type));
+ }
+ nested_object =
make_nullable(nested_object->get_ptr())->assume_mutable();
+ auto array =
+ make_nullable(ColumnArray::create(std::move(nested_object),
std::move(offset)));
+ PathInDataBuilder builder;
+ // add parent prefix
+ builder.append(entry.first.get_parts(), false);
+ PathInData parent_path = builder.build();
+ // unset nested parts
+ parent_path.unset_nested();
+ DCHECK(!parent_path.has_nested_part());
+ container_variant.add_sub_column(parent_path, array->assume_mutable(),
+ ColumnObject::NESTED_TYPE);
+ }
+ return Status::OK();
}
-Status ExtractReader::seek_to_ordinal(ordinal_t ord) {
- CHECK(_root_reader->inited);
- return _root_reader->iterator->seek_to_ordinal(ord);
-}
+Status HierarchicalDataReader::_init_container(vectorized::MutableColumnPtr&
container,
+ size_t nrows) {
+ using namespace vectorized;
+ // build variant as container
+ container = ColumnObject::create(true, false);
+ auto& container_variant = assert_cast<ColumnObject&>(*container);
-Status ExtractReader::extract_to(vectorized::MutableColumnPtr& dst, size_t
nrows) {
- DCHECK(_root_reader);
- DCHECK(_root_reader->inited);
- vectorized::ColumnNullable* nullable_column = nullptr;
- if (dst->is_nullable()) {
- nullable_column = assert_cast<vectorized::ColumnNullable*>(dst.get());
+ // add root first
+ if (_path.get_parts().empty() && _root_reader) {
+ auto& root_var =
+ _root_reader->column->is_nullable()
+ ? assert_cast<vectorized::ColumnObject&>(
+
assert_cast<vectorized::ColumnNullable&>(*_root_reader->column)
+ .get_nested_column())
+ :
assert_cast<vectorized::ColumnObject&>(*_root_reader->column);
+ auto column = root_var.get_root();
+ auto type = root_var.get_root_type();
+ container_variant.add_sub_column({}, std::move(column), type);
}
- auto& variant =
- nullable_column == nullptr
- ? assert_cast<vectorized::ColumnObject&>(*dst)
- :
assert_cast<vectorized::ColumnObject&>(nullable_column->get_nested_column());
- const auto& root =
- _root_reader->column->is_nullable()
- ? assert_cast<vectorized::ColumnObject&>(
-
assert_cast<vectorized::ColumnNullable&>(*_root_reader->column)
- .get_nested_column())
- : assert_cast<const
vectorized::ColumnObject&>(*_root_reader->column);
- // extract root value with path, we can't modify the original root column
- // since some other column may depend on it.
- vectorized::MutableColumnPtr extracted_column;
- RETURN_IF_ERROR(root.extract_root( // trim the root name, eg. v.a.b -> a.b
- _col.path_info_ptr()->copy_pop_front(), extracted_column));
-
- if (_target_type_hint != nullptr) {
- variant.create_root(_target_type_hint,
_target_type_hint->create_column());
+ // parent path -> subcolumns
+ std::map<PathInData, PathsWithColumnAndType> nested_subcolumns;
+ PathsWithColumnAndType non_nested_subcolumns;
+ RETURN_IF_ERROR(tranverse([&](SubstreamReaderTree::Node& node) {
+ MutableColumnPtr column = node.data.column->get_ptr();
+ PathInData relative_path =
node.path.copy_pop_nfront(_path.get_parts().size());
+
+ if (node.path.has_nested_part()) {
+
CHECK_EQ(getTypeName(remove_nullable(node.data.type)->get_type_id()),
+ getTypeName(TypeIndex::Array));
+ PathInData parent_path =
+
node.path.get_nested_prefix_path().copy_pop_nfront(_path.get_parts().size());
+ nested_subcolumns[parent_path].emplace_back(relative_path,
column->get_ptr(),
+ node.data.type);
+ } else {
+ non_nested_subcolumns.emplace_back(relative_path,
column->get_ptr(), node.data.type);
+ }
+ return Status::OK();
+ }));
+
+ RETURN_IF_ERROR(_process_sub_columns(container_variant,
non_nested_subcolumns));
+
+ RETURN_IF_ERROR(_process_nested_columns(container_variant,
nested_subcolumns));
+
+ RETURN_IF_ERROR(_process_sparse_column(container_variant, nrows));
+ return Status::OK();
+}
+
+// Return sub-path by specified prefix.
+// For example, for prefix a.b:
+// a.b.c.d -> c.d, a.b.c -> c
+static std::string_view get_sub_path(const std::string_view& path, const
std::string_view& prefix) {
+ return path.substr(prefix.size() + 1);
+}
+
+Status
HierarchicalDataReader::_process_sparse_column(vectorized::ColumnObject&
container_variant,
+ size_t nrows) {
+ using namespace vectorized;
+ if (!_sparse_column_reader) {
+
container_variant.get_sparse_column()->assume_mutable()->insert_many_defaults(nrows);
+ return Status::OK();
}
- if (variant.empty() || variant.is_null_root()) {
- variant.create_root(root.get_root_type(), std::move(extracted_column));
+ // process sparse column
+ if (_path.get_parts().empty()) {
+ // directly use sparse column if access root
+
container_variant.set_sparse_column(_sparse_column_reader->column->get_ptr());
} else {
- vectorized::ColumnPtr cast_column;
- const auto& expected_type = variant.get_root_type();
- RETURN_IF_ERROR(vectorized::schema_util::cast_column(
- {extracted_column->get_ptr(),
- vectorized::make_nullable(
-
std::make_shared<vectorized::ColumnObject::MostCommonType>()),
- ""},
- expected_type, &cast_column));
- variant.get_root()->insert_range_from(*cast_column, 0, nrows);
- // variant.set_num_rows(variant.get_root()->size());
+ const auto& offsets =
+ assert_cast<const
ColumnMap&>(*_sparse_column_reader->column).get_offsets();
+ /// Check if there is no data in shared data in current range.
+ if (offsets.back() == offsets[-1]) {
+
container_variant.get_sparse_column()->assume_mutable()->insert_many_defaults(nrows);
+ } else {
+ // Read for variant sparse column
+ // Example path: a.b
+ // data: a.b.c : int|123
+ // a.b.d : string|"456"
+ // a.e.d : string|"789"
+ // then the extracted sparse column will be:
+ // c : int|123
+ // d : string|"456"
+ const auto& sparse_data_map =
+ assert_cast<const
ColumnMap&>(*_sparse_column_reader->column);
+ const auto& src_sparse_data_offsets =
sparse_data_map.get_offsets();
+ const auto& src_sparse_data_paths =
+ assert_cast<const
ColumnString&>(sparse_data_map.get_keys());
+ const auto& src_sparse_data_values =
+ assert_cast<const
ColumnString&>(sparse_data_map.get_values());
+
+ auto& sparse_data_offsets =
+ assert_cast<ColumnMap&>(
+
*container_variant.get_sparse_column()->assume_mutable())
+ .get_offsets();
+ auto [sparse_data_paths, sparse_data_values] =
+ container_variant.get_sparse_data_paths_and_values();
+ StringRef prefix_ref(_path.get_path());
+ std::string_view path_prefix(prefix_ref.data, prefix_ref.size);
+ for (size_t i = 0; i != src_sparse_data_offsets.size(); ++i) {
+ size_t start = src_sparse_data_offsets[ssize_t(i) - 1];
+ size_t end = src_sparse_data_offsets[ssize_t(i)];
+ size_t lower_bound_index =
+
vectorized::ColumnObject::find_path_lower_bound_in_sparse_data(
+ prefix_ref, src_sparse_data_paths, start, end);
+ for (; lower_bound_index != end; ++lower_bound_index) {
+ auto path_ref =
src_sparse_data_paths.get_data_at(lower_bound_index);
+ std::string_view path(path_ref.data, path_ref.size);
+ if (!path.starts_with(path_prefix)) {
+ break;
+ }
+ // Don't include path that is equal to the prefix.
+ if (path.size() != path_prefix.size()) {
+ auto sub_path = get_sub_path(path, path_prefix);
+ sparse_data_paths->insert_data(sub_path.data(),
sub_path.size());
+
sparse_data_values->insert_from(src_sparse_data_values, lower_bound_index);
+ }
+ }
+ sparse_data_offsets.push_back(sparse_data_paths->size());
+ }
+ }
}
- if (dst->is_nullable()) {
- // fill nullmap
- vectorized::ColumnUInt8& dst_null_map =
-
assert_cast<vectorized::ColumnNullable&>(*dst).get_null_map_column();
- vectorized::ColumnUInt8& src_null_map =
-
assert_cast<vectorized::ColumnNullable&>(*variant.get_root()).get_null_map_column();
- dst_null_map.insert_range_from(src_null_map, 0, src_null_map.size());
+ return Status::OK();
+}
+
+Status HierarchicalDataReader::_init_null_map_and_clear_columns(
+ vectorized::MutableColumnPtr& container, vectorized::MutableColumnPtr&
dst, size_t nrows) {
+ using namespace vectorized;
+ // clear data in nodes
+ RETURN_IF_ERROR(tranverse([&](SubstreamReaderTree::Node& node) {
+ node.data.column->clear();
+ return Status::OK();
+ }));
+ container->clear();
+ _sparse_column_reader->column->clear();
+ if (_root_reader) {
+ if (_root_reader->column->is_nullable()) {
+ // fill nullmap
+ DCHECK(dst->is_nullable());
+ ColumnUInt8& dst_null_map =
assert_cast<ColumnNullable&>(*dst).get_null_map_column();
+ ColumnUInt8& src_null_map =
+
assert_cast<ColumnNullable&>(*_root_reader->column).get_null_map_column();
+ dst_null_map.insert_range_from(src_null_map, 0,
src_null_map.size());
+ // clear nullmap and inner data
+ src_null_map.clear();
+ assert_cast<ColumnObject&>(
+
assert_cast<ColumnNullable&>(*_root_reader->column).get_nested_column())
+ .clear_column_data();
+ } else {
+ auto& root_column =
assert_cast<ColumnObject&>(*_root_reader->column);
+ root_column.clear_column_data();
+ }
+ } else {
+ if (dst->is_nullable()) {
+ // No nullable info exist in hirearchical data, fill nullmap with
all none null
+ ColumnUInt8& dst_null_map =
assert_cast<ColumnNullable&>(*dst).get_null_map_column();
+ auto fake_nullable_column = ColumnUInt8::create(nrows, 0);
+ dst_null_map.insert_range_from(*fake_nullable_column, 0, nrows);
+ }
}
- _root_reader->column->clear();
-#ifndef NDEBUG
- variant.check_consistency();
-#endif
return Status::OK();
}
-Status ExtractReader::next_batch(size_t* n, vectorized::MutableColumnPtr& dst,
bool* has_null) {
- RETURN_IF_ERROR(_root_reader->iterator->next_batch(n,
_root_reader->column));
- RETURN_IF_ERROR(extract_to(dst, *n));
+Status SparseColumnExtractReader::init(const ColumnIteratorOptions& opts) {
+ return _sparse_column_reader->init(opts);
+}
+
+Status SparseColumnExtractReader::seek_to_first() {
+ return _sparse_column_reader->seek_to_first();
+}
+
+Status SparseColumnExtractReader::seek_to_ordinal(ordinal_t ord) {
+ return _sparse_column_reader->seek_to_ordinal(ord);
+}
+
+void
SparseColumnExtractReader::_fill_path_column(vectorized::MutableColumnPtr& dst)
{
+ vectorized::ColumnObject& var =
+ dst->is_nullable()
+ ? assert_cast<vectorized::ColumnObject&>(
+
assert_cast<vectorized::ColumnNullable&>(*dst).get_nested_column())
+ : assert_cast<vectorized::ColumnObject&>(*dst);
+ DCHECK(!var.is_null_root());
+ vectorized::ColumnObject::fill_path_olumn_from_sparse_data(
+ *var.get_subcolumn({}) /*root*/, StringRef {_path.data(),
_path.size()},
+ _sparse_column->get_ptr(), 0, _sparse_column->size());
+ _sparse_column->clear();
+}
+
+Status SparseColumnExtractReader::next_batch(size_t* n,
vectorized::MutableColumnPtr& dst,
Review Comment:
warning: pointer parameter 'n' can be pointer to const
[readability-non-const-parameter]
```suggestion
Status SparseColumnExtractReader::next_batch(const size_t* n,
vectorized::MutableColumnPtr& dst,
```
##########
be/src/vec/columns/column_object.cpp:
##########
@@ -1717,89 +1776,203 @@
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, std::string*
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- rapidjson::StringBuffer buf;
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
*output = type->to_string(*get_root(), row);
return Status::OK();
}
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- // TODO avoid copy
- *output = std::string(buf.GetString(), buf.GetSize());
+ // TODO preallocate memory
+ auto tmp_col = ColumnString::create();
+ VectorBufferWriter write_buffer(*tmp_col.get());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, write_buffer,
nullptr));
+ write_buffer.commit();
+ auto str_ref = tmp_col->get_data_at(0);
+ *output = std::string(str_ref.data, str_ref.size);
return Status::OK();
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, BufferWritable&
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
type->to_string(*get_root(), row, output);
return Status::OK();
}
- rapidjson::StringBuffer buf;
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- output.write(buf.GetString(), buf.GetLength());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, output, nullptr));
return Status::OK();
}
-Status ColumnObject::serialize_one_row_to_json_format(int64_t row,
rapidjson::StringBuffer* output,
- bool* is_null) const {
- CHECK(is_finalized());
- if (subcolumns.empty()) {
- if (is_null != nullptr) {
- *is_null = true;
- } else {
- rapidjson::Value root(rapidjson::kNullType);
- rapidjson::Writer<rapidjson::StringBuffer> writer(*output);
- if (!root.Accept(writer)) {
- return Status::InternalError("Failed to serialize json value");
+/// Struct that represents elements of the JSON path.
+/// "a.b.c" -> ["a", "b", "c"]
+struct PathElements {
+ explicit PathElements(const String& path) {
+ const char* start = path.data();
+ const char* end = start + path.size();
+ const char* pos = start;
+ const char* last_dot_pos = pos - 1;
+ for (pos = start; pos != end; ++pos) {
+ if (*pos == '.') {
+ elements.emplace_back(last_dot_pos + 1, size_t(pos -
last_dot_pos - 1));
+ last_dot_pos = pos;
}
}
- return Status::OK();
+
+ elements.emplace_back(last_dot_pos + 1, size_t(pos - last_dot_pos -
1));
}
- CHECK(size() > row);
- rapidjson::StringBuffer buffer;
- rapidjson::Value root(rapidjson::kNullType);
- if (doc_structure == nullptr) {
- doc_structure = std::make_shared<rapidjson::Document>();
- rapidjson::Document::AllocatorType& allocator =
doc_structure->GetAllocator();
- get_json_by_column_tree(*doc_structure, allocator,
subcolumns.get_root());
+
+ size_t size() const { return elements.size(); }
+
+ std::vector<std::string_view> elements;
+};
+
+/// Struct that represents a prefix of a JSON path. Used during output of the
JSON object.
+struct Prefix {
+ /// Shrink current prefix to the common prefix of current prefix and
specified path.
+ /// For example, if current prefix is a.b.c.d and path is a.b.e, then
shrink the prefix to a.b.
+ void shrink_to_common_prefix(const PathElements& path_elements) {
+ /// Don't include last element in path_elements in the prefix.
+ size_t i = 0;
+ while (i != elements.size() && i != (path_elements.elements.size() -
1) &&
+ elements[i].first == path_elements.elements[i])
+ ++i;
+ elements.resize(i);
}
- if (!doc_structure->IsNull()) {
- root.CopyFrom(*doc_structure, doc_structure->GetAllocator());
+
+ /// Check is_first flag in current object.
+ bool is_first_in_current_object() const {
+ if (elements.empty()) return root_is_first_flag;
+ return elements.back().second;
}
- Arena mem_pool;
-#ifndef NDEBUG
- VLOG_DEBUG << "dump structure " <<
JsonFunctions::print_json_value(*doc_structure);
-#endif
- for (const auto& subcolumn : subcolumns) {
- RETURN_IF_ERROR(find_and_set_leave_value(
- subcolumn->data.get_finalized_column_ptr(), subcolumn->path,
- subcolumn->data.get_least_common_type_serde(),
- subcolumn->data.get_least_common_type(),
- subcolumn->data.least_common_type.get_base_type_id(), root,
- doc_structure->GetAllocator(), mem_pool, row));
- if (subcolumn->path.empty() && !root.IsObject()) {
- // root was modified, only handle root node
- break;
- }
+
+ /// Set flag is_first = false in current object.
+ void set_not_first_in_current_object() {
+ if (elements.empty())
+ root_is_first_flag = false;
+ else
+ elements.back().second = false;
Review Comment:
warning: statement should be inside braces
[readability-braces-around-statements]
```suggestion
else {
e
}lements.back().second = false;
```
##########
be/src/vec/columns/column_object.cpp:
##########
@@ -1717,89 +1776,203 @@
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, std::string*
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- rapidjson::StringBuffer buf;
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
*output = type->to_string(*get_root(), row);
return Status::OK();
}
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- // TODO avoid copy
- *output = std::string(buf.GetString(), buf.GetSize());
+ // TODO preallocate memory
+ auto tmp_col = ColumnString::create();
+ VectorBufferWriter write_buffer(*tmp_col.get());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, write_buffer,
nullptr));
+ write_buffer.commit();
+ auto str_ref = tmp_col->get_data_at(0);
+ *output = std::string(str_ref.data, str_ref.size);
return Status::OK();
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, BufferWritable&
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
type->to_string(*get_root(), row, output);
return Status::OK();
}
- rapidjson::StringBuffer buf;
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- output.write(buf.GetString(), buf.GetLength());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, output, nullptr));
return Status::OK();
}
-Status ColumnObject::serialize_one_row_to_json_format(int64_t row,
rapidjson::StringBuffer* output,
- bool* is_null) const {
- CHECK(is_finalized());
- if (subcolumns.empty()) {
- if (is_null != nullptr) {
- *is_null = true;
- } else {
- rapidjson::Value root(rapidjson::kNullType);
- rapidjson::Writer<rapidjson::StringBuffer> writer(*output);
- if (!root.Accept(writer)) {
- return Status::InternalError("Failed to serialize json value");
+/// Struct that represents elements of the JSON path.
+/// "a.b.c" -> ["a", "b", "c"]
+struct PathElements {
+ explicit PathElements(const String& path) {
+ const char* start = path.data();
+ const char* end = start + path.size();
+ const char* pos = start;
+ const char* last_dot_pos = pos - 1;
+ for (pos = start; pos != end; ++pos) {
+ if (*pos == '.') {
+ elements.emplace_back(last_dot_pos + 1, size_t(pos -
last_dot_pos - 1));
+ last_dot_pos = pos;
}
}
- return Status::OK();
+
+ elements.emplace_back(last_dot_pos + 1, size_t(pos - last_dot_pos -
1));
}
- CHECK(size() > row);
- rapidjson::StringBuffer buffer;
- rapidjson::Value root(rapidjson::kNullType);
- if (doc_structure == nullptr) {
- doc_structure = std::make_shared<rapidjson::Document>();
- rapidjson::Document::AllocatorType& allocator =
doc_structure->GetAllocator();
- get_json_by_column_tree(*doc_structure, allocator,
subcolumns.get_root());
+
+ size_t size() const { return elements.size(); }
+
+ std::vector<std::string_view> elements;
+};
+
+/// Struct that represents a prefix of a JSON path. Used during output of the
JSON object.
+struct Prefix {
+ /// Shrink current prefix to the common prefix of current prefix and
specified path.
+ /// For example, if current prefix is a.b.c.d and path is a.b.e, then
shrink the prefix to a.b.
+ void shrink_to_common_prefix(const PathElements& path_elements) {
+ /// Don't include last element in path_elements in the prefix.
+ size_t i = 0;
+ while (i != elements.size() && i != (path_elements.elements.size() -
1) &&
+ elements[i].first == path_elements.elements[i])
+ ++i;
+ elements.resize(i);
}
- if (!doc_structure->IsNull()) {
- root.CopyFrom(*doc_structure, doc_structure->GetAllocator());
+
+ /// Check is_first flag in current object.
+ bool is_first_in_current_object() const {
+ if (elements.empty()) return root_is_first_flag;
Review Comment:
warning: statement should be inside braces
[readability-braces-around-statements]
```suggestion
if (elements.empty()) { return root_is_first_flag;
}
```
##########
be/src/vec/columns/column_object.cpp:
##########
@@ -1717,89 +1776,203 @@
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, std::string*
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- rapidjson::StringBuffer buf;
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
*output = type->to_string(*get_root(), row);
return Status::OK();
}
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- // TODO avoid copy
- *output = std::string(buf.GetString(), buf.GetSize());
+ // TODO preallocate memory
+ auto tmp_col = ColumnString::create();
+ VectorBufferWriter write_buffer(*tmp_col.get());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, write_buffer,
nullptr));
+ write_buffer.commit();
+ auto str_ref = tmp_col->get_data_at(0);
+ *output = std::string(str_ref.data, str_ref.size);
return Status::OK();
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, BufferWritable&
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
type->to_string(*get_root(), row, output);
return Status::OK();
}
- rapidjson::StringBuffer buf;
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- output.write(buf.GetString(), buf.GetLength());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, output, nullptr));
return Status::OK();
}
-Status ColumnObject::serialize_one_row_to_json_format(int64_t row,
rapidjson::StringBuffer* output,
- bool* is_null) const {
- CHECK(is_finalized());
- if (subcolumns.empty()) {
- if (is_null != nullptr) {
- *is_null = true;
- } else {
- rapidjson::Value root(rapidjson::kNullType);
- rapidjson::Writer<rapidjson::StringBuffer> writer(*output);
- if (!root.Accept(writer)) {
- return Status::InternalError("Failed to serialize json value");
+/// Struct that represents elements of the JSON path.
+/// "a.b.c" -> ["a", "b", "c"]
+struct PathElements {
+ explicit PathElements(const String& path) {
+ const char* start = path.data();
+ const char* end = start + path.size();
+ const char* pos = start;
+ const char* last_dot_pos = pos - 1;
+ for (pos = start; pos != end; ++pos) {
+ if (*pos == '.') {
+ elements.emplace_back(last_dot_pos + 1, size_t(pos -
last_dot_pos - 1));
+ last_dot_pos = pos;
}
}
- return Status::OK();
+
+ elements.emplace_back(last_dot_pos + 1, size_t(pos - last_dot_pos -
1));
}
- CHECK(size() > row);
- rapidjson::StringBuffer buffer;
- rapidjson::Value root(rapidjson::kNullType);
- if (doc_structure == nullptr) {
- doc_structure = std::make_shared<rapidjson::Document>();
- rapidjson::Document::AllocatorType& allocator =
doc_structure->GetAllocator();
- get_json_by_column_tree(*doc_structure, allocator,
subcolumns.get_root());
+
+ size_t size() const { return elements.size(); }
+
+ std::vector<std::string_view> elements;
+};
+
+/// Struct that represents a prefix of a JSON path. Used during output of the
JSON object.
+struct Prefix {
+ /// Shrink current prefix to the common prefix of current prefix and
specified path.
+ /// For example, if current prefix is a.b.c.d and path is a.b.e, then
shrink the prefix to a.b.
+ void shrink_to_common_prefix(const PathElements& path_elements) {
+ /// Don't include last element in path_elements in the prefix.
+ size_t i = 0;
+ while (i != elements.size() && i != (path_elements.elements.size() -
1) &&
+ elements[i].first == path_elements.elements[i])
+ ++i;
+ elements.resize(i);
}
- if (!doc_structure->IsNull()) {
- root.CopyFrom(*doc_structure, doc_structure->GetAllocator());
+
+ /// Check is_first flag in current object.
+ bool is_first_in_current_object() const {
+ if (elements.empty()) return root_is_first_flag;
+ return elements.back().second;
}
- Arena mem_pool;
-#ifndef NDEBUG
- VLOG_DEBUG << "dump structure " <<
JsonFunctions::print_json_value(*doc_structure);
-#endif
- for (const auto& subcolumn : subcolumns) {
- RETURN_IF_ERROR(find_and_set_leave_value(
- subcolumn->data.get_finalized_column_ptr(), subcolumn->path,
- subcolumn->data.get_least_common_type_serde(),
- subcolumn->data.get_least_common_type(),
- subcolumn->data.least_common_type.get_base_type_id(), root,
- doc_structure->GetAllocator(), mem_pool, row));
- if (subcolumn->path.empty() && !root.IsObject()) {
- // root was modified, only handle root node
- break;
- }
+
+ /// Set flag is_first = false in current object.
+ void set_not_first_in_current_object() {
+ if (elements.empty())
+ root_is_first_flag = false;
+ else
+ elements.back().second = false;
}
- compact_null_values(root, doc_structure->GetAllocator());
- if (root.IsNull() && is_null != nullptr) {
- // Fast path
- *is_null = true;
- } else {
- output->Clear();
- rapidjson::Writer<rapidjson::StringBuffer> writer(*output);
- if (!root.Accept(writer)) {
- return Status::InternalError("Failed to serialize json value");
+
+ size_t size() const { return elements.size(); }
+
+ /// Elements of the prefix: (path element, is_first flag in this prefix).
+ /// is_first flag indicates if we already serialized some key in the
object with such prefix.
+ std::vector<std::pair<std::string_view, bool>> elements;
+ bool root_is_first_flag = true;
+};
+
+Status ColumnObject::serialize_one_row_to_json_format(int64_t row_num,
BufferWritable& output,
Review Comment:
warning: function 'serialize_one_row_to_json_format' exceeds recommended
size/complexity thresholds [readability-function-size]
```cpp
Status ColumnObject::serialize_one_row_to_json_format(int64_t row_num,
BufferWritable& output,
^
```
<details>
<summary>Additional context</summary>
**be/src/vec/columns/column_object.cpp:1867:** 108 lines including
whitespace and comments (threshold 80)
```cpp
Status ColumnObject::serialize_one_row_to_json_format(int64_t row_num,
BufferWritable& output,
^
```
</details>
##########
be/src/vec/columns/column_object.cpp:
##########
@@ -1717,89 +1776,203 @@
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, std::string*
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- rapidjson::StringBuffer buf;
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
*output = type->to_string(*get_root(), row);
return Status::OK();
}
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- // TODO avoid copy
- *output = std::string(buf.GetString(), buf.GetSize());
+ // TODO preallocate memory
+ auto tmp_col = ColumnString::create();
+ VectorBufferWriter write_buffer(*tmp_col.get());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, write_buffer,
nullptr));
+ write_buffer.commit();
+ auto str_ref = tmp_col->get_data_at(0);
+ *output = std::string(str_ref.data, str_ref.size);
return Status::OK();
}
Status ColumnObject::serialize_one_row_to_string(int64_t row, BufferWritable&
output) const {
- if (!is_finalized()) {
- const_cast<ColumnObject*>(this)->finalize();
- }
- if (is_scalar_variant()) {
+ // if (!is_finalized()) {
+ // const_cast<ColumnObject*>(this)->finalize();
+ // }
+ if (is_scalar_variant() && is_finalized()) {
auto type = get_root_type();
type->to_string(*get_root(), row, output);
return Status::OK();
}
- rapidjson::StringBuffer buf;
- RETURN_IF_ERROR(serialize_one_row_to_json_format(row, &buf, nullptr));
- output.write(buf.GetString(), buf.GetLength());
+ RETURN_IF_ERROR(serialize_one_row_to_json_format(row, output, nullptr));
return Status::OK();
}
-Status ColumnObject::serialize_one_row_to_json_format(int64_t row,
rapidjson::StringBuffer* output,
- bool* is_null) const {
- CHECK(is_finalized());
- if (subcolumns.empty()) {
- if (is_null != nullptr) {
- *is_null = true;
- } else {
- rapidjson::Value root(rapidjson::kNullType);
- rapidjson::Writer<rapidjson::StringBuffer> writer(*output);
- if (!root.Accept(writer)) {
- return Status::InternalError("Failed to serialize json value");
+/// Struct that represents elements of the JSON path.
+/// "a.b.c" -> ["a", "b", "c"]
+struct PathElements {
+ explicit PathElements(const String& path) {
+ const char* start = path.data();
+ const char* end = start + path.size();
+ const char* pos = start;
+ const char* last_dot_pos = pos - 1;
+ for (pos = start; pos != end; ++pos) {
+ if (*pos == '.') {
+ elements.emplace_back(last_dot_pos + 1, size_t(pos -
last_dot_pos - 1));
+ last_dot_pos = pos;
}
}
- return Status::OK();
+
+ elements.emplace_back(last_dot_pos + 1, size_t(pos - last_dot_pos -
1));
}
- CHECK(size() > row);
- rapidjson::StringBuffer buffer;
- rapidjson::Value root(rapidjson::kNullType);
- if (doc_structure == nullptr) {
- doc_structure = std::make_shared<rapidjson::Document>();
- rapidjson::Document::AllocatorType& allocator =
doc_structure->GetAllocator();
- get_json_by_column_tree(*doc_structure, allocator,
subcolumns.get_root());
+
+ size_t size() const { return elements.size(); }
+
+ std::vector<std::string_view> elements;
+};
+
+/// Struct that represents a prefix of a JSON path. Used during output of the
JSON object.
+struct Prefix {
+ /// Shrink current prefix to the common prefix of current prefix and
specified path.
+ /// For example, if current prefix is a.b.c.d and path is a.b.e, then
shrink the prefix to a.b.
+ void shrink_to_common_prefix(const PathElements& path_elements) {
+ /// Don't include last element in path_elements in the prefix.
+ size_t i = 0;
+ while (i != elements.size() && i != (path_elements.elements.size() -
1) &&
+ elements[i].first == path_elements.elements[i])
+ ++i;
+ elements.resize(i);
}
- if (!doc_structure->IsNull()) {
- root.CopyFrom(*doc_structure, doc_structure->GetAllocator());
+
+ /// Check is_first flag in current object.
+ bool is_first_in_current_object() const {
+ if (elements.empty()) return root_is_first_flag;
+ return elements.back().second;
}
- Arena mem_pool;
-#ifndef NDEBUG
- VLOG_DEBUG << "dump structure " <<
JsonFunctions::print_json_value(*doc_structure);
-#endif
- for (const auto& subcolumn : subcolumns) {
- RETURN_IF_ERROR(find_and_set_leave_value(
- subcolumn->data.get_finalized_column_ptr(), subcolumn->path,
- subcolumn->data.get_least_common_type_serde(),
- subcolumn->data.get_least_common_type(),
- subcolumn->data.least_common_type.get_base_type_id(), root,
- doc_structure->GetAllocator(), mem_pool, row));
- if (subcolumn->path.empty() && !root.IsObject()) {
- // root was modified, only handle root node
- break;
- }
+
+ /// Set flag is_first = false in current object.
+ void set_not_first_in_current_object() {
+ if (elements.empty())
Review Comment:
warning: statement should be inside braces
[readability-braces-around-statements]
```suggestion
if (elements.empty()) {
```
be/src/vec/columns/column_object.cpp:1855:
```diff
- else
+ } else
```
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