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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// 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,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "data_type_map.h"
#include <ctype.h>
#include <gen_cpp/data.pb.h>
#include <glog/logging.h>
#include <string.h>
#include <string>
#include <typeinfo>
#include "agent/be_exec_version_manager.h"
#include "vec/columns/column.h"
#include "vec/columns/column_array.h"
#include "vec/columns/column_const.h"
#include "vec/columns/column_map.h"
#include "vec/columns/column_nullable.h"
#include "vec/common/assert_cast.h"
#include "vec/common/string_buffer.hpp"
#include "vec/common/string_ref.h"
#include "vec/data_types/data_type_nullable.h"
#include "vec/io/reader_buffer.h"
namespace doris::vectorized {
DataTypeMap::DataTypeMap(const DataTypePtr& key_type_, const DataTypePtr& value_type_) {
key_type = key_type_;
value_type = value_type_;
}
Field DataTypeMap::get_default() const {
Map m;
Array key, val;
key.push_back(key_type->get_default());
val.push_back(value_type->get_default());
m.push_back(key);
m.push_back(val);
return m;
};
std::string DataTypeMap::to_string(const IColumn& column, size_t row_num) const {
auto result = check_column_const_set_readability(column, row_num);
ColumnPtr ptr = result.first;
row_num = result.second;
const ColumnMap& map_column = assert_cast<const ColumnMap&>(*ptr);
const ColumnArray::Offsets64& offsets = map_column.get_offsets();
size_t offset = offsets[row_num - 1];
size_t next_offset = offsets[row_num];
const IColumn& nested_keys_column = map_column.get_keys();
const IColumn& nested_values_column = map_column.get_values();
std::string str;
str += "{";
for (size_t i = offset; i < next_offset; ++i) {
if (i != offset) {
str += ", ";
}
if (nested_keys_column.is_null_at(i)) {
str += "null";
} else if (WhichDataType(remove_nullable(key_type)).is_string_or_fixed_string()) {
str += "\"" + key_type->to_string(nested_keys_column, i) + "\"";
} else {
str += key_type->to_string(nested_keys_column, i);
}
str += ":";
if (nested_values_column.is_null_at(i)) {
str += "null";
} else if (WhichDataType(remove_nullable(value_type)).is_string_or_fixed_string()) {
str += "\"" + value_type->to_string(nested_values_column, i) + "\"";
} else {
str += value_type->to_string(nested_values_column, i);
}
}
str += "}";
return str;
}
void DataTypeMap::to_string(const IColumn& column, size_t row_num, BufferWritable& ostr) const {
std::string str = to_string(column, row_num);
ostr.write(str.c_str(), str.size());
}
bool next_slot_from_string(ReadBuffer& rb, StringRef& output, bool& has_quota) {
StringRef element(rb.position(), 0);
has_quota = false;
if (rb.eof()) {
return false;
}
// ltrim
while (!rb.eof() && isspace(*rb.position())) {
++rb.position();
element.data = rb.position();
}
// parse string
if (*rb.position() == '"' || *rb.position() == '\'') {
const char str_sep = *rb.position();
size_t str_len = 1;
// search until next '"' or '\''
while (str_len < rb.count() && *(rb.position() + str_len) != str_sep) {
++str_len;
}
// invalid string
if (str_len >= rb.count()) {
rb.position() = rb.end();
return false;
}
has_quota = true;
rb.position() += str_len + 1;
element.size += str_len + 1;
}
// parse array element until map separator ':' or ',' or end '}'
while (!rb.eof() && (*rb.position() != ':') && (*rb.position() != ',') &&
(rb.count() != 1 || *rb.position() != '}')) {
if (has_quota && !isspace(*rb.position())) {
return false;
}
++rb.position();
++element.size;
}
// invalid array element
if (rb.eof()) {
return false;
}
// adjust read buffer position to first char of next array element
++rb.position();
// rtrim
while (element.size > 0 && isspace(element.data[element.size - 1])) {
--element.size;
}
// trim '"' and '\'' for string
if (element.size >= 2 && (element.data[0] == '"' || element.data[0] == '\'') &&
element.data[0] == element.data[element.size - 1]) {
++element.data;
element.size -= 2;
}
output = element;
return true;
}
bool is_empty_null_element(StringRef element, IColumn* nested_column, bool has_quota) {
auto& nested_null_col = reinterpret_cast<ColumnNullable&>(*nested_column);
// handle empty element
if (element.size == 0) {
nested_null_col.get_nested_column().insert_default();
nested_null_col.get_null_map_data().push_back(0);
return true;
}
// handle null element
if (!has_quota && element.size == 4 && strncmp(element.data, "null", 4) == 0) {
nested_null_col.get_nested_column().insert_default();
nested_null_col.get_null_map_data().push_back(1);
return true;
}
return false;
}
Status DataTypeMap::from_string(ReadBuffer& rb, IColumn* column) const {
DCHECK(!rb.eof());
auto* map_column = assert_cast<ColumnMap*>(column);
if (*rb.position() != '{') {
return Status::InvalidArgument("map does not start with '{}' character, found '{}'", "{",
*rb.position());
}
if (*(rb.end() - 1) != '}') {
return Status::InvalidArgument("map does not end with '{}' character, found '{}'", "}",
*(rb.end() - 1));
}
if (rb.count() == 2) {
// empty map {} , need to make empty array to add offset
map_column->insert_default();
} else {
// {"aaa": 1, "bbb": 20}, need to handle key slot and value slot to make key column arr and value arr
// skip "{"
++rb.position();
ColumnArray::Offsets64& map_off = map_column->get_offsets();
IColumn& nested_key_column = map_column->get_keys();
DCHECK(nested_key_column.is_nullable());
IColumn& nested_val_column = map_column->get_values();
DCHECK(nested_val_column.is_nullable());
size_t element_num = 0;
while (!rb.eof()) {
StringRef key_element(rb.position(), rb.count());
bool has_quota = false;
if (!next_slot_from_string(rb, key_element, has_quota)) {
// pop this current row which already put element_num item into this row.
map_column->get_keys().pop_back(element_num);
map_column->get_values().pop_back(element_num);
return Status::InvalidArgument("Cannot read map key from text '{}'",
key_element.to_string());
}
if (!is_empty_null_element(key_element, &nested_key_column, has_quota)) {
ReadBuffer krb(const_cast<char*>(key_element.data), key_element.size);
if (auto st = key_type->from_string(krb, &nested_key_column); !st.ok()) {
// pop this current row which already put element_num item into this row.
map_column->get_keys().pop_back(element_num);
map_column->get_values().pop_back(element_num);
return st;
}
}
has_quota = false;
StringRef value_element(rb.position(), rb.count());
if (!next_slot_from_string(rb, value_element, has_quota)) {
// +1 just because key column already put succeed , but element_num not refresh here
map_column->get_keys().pop_back(element_num + 1);
map_column->get_values().pop_back(element_num);
return Status::InvalidArgument("Cannot read map value from text '{}'",
value_element.to_string());
}
if (!is_empty_null_element(value_element, &nested_val_column, has_quota)) {
ReadBuffer vrb(const_cast<char*>(value_element.data), value_element.size);
if (auto st = value_type->from_string(vrb, &nested_val_column); !st.ok()) {
map_column->get_keys().pop_back(element_num + 1);
map_column->get_values().pop_back(element_num);
return st;
}
}
++element_num;
}
map_off.push_back(map_off.back() + element_num);
}
return Status::OK();
}
MutableColumnPtr DataTypeMap::create_column() const {
return ColumnMap::create(key_type->create_column(), value_type->create_column(),
ColumnArray::ColumnOffsets::create());
}
void DataTypeMap::to_pb_column_meta(PColumnMeta* col_meta) const {
IDataType::to_pb_column_meta(col_meta);
auto key_children = col_meta->add_children();
auto value_children = col_meta->add_children();
key_type->to_pb_column_meta(key_children);
value_type->to_pb_column_meta(value_children);
}
bool DataTypeMap::equals(const IDataType& rhs) const {
if (typeid(rhs) != typeid(*this)) {
return false;
}
const DataTypeMap& rhs_map = static_cast<const DataTypeMap&>(rhs);
if (!key_type->equals(*rhs_map.key_type)) {
return false;
}
if (!value_type->equals(*rhs_map.value_type)) {
return false;
}
return true;
}
// binary : const flag| row num | real saved num | offset | key_col | val_col
// offset : off1 | off2 ...
// key_col: key1 | key1 ...
// val_col: val1 | val2 ...
int64_t DataTypeMap::get_uncompressed_serialized_bytes(const IColumn& column,
int data_version) const {
if (data_version >= USE_CONST_SERDE) {
auto size = sizeof(bool) + sizeof(size_t) + sizeof(size_t);
bool is_const_column = is_column_const(column);
auto real_need_copy_num = is_const_column ? 1 : column.size();
const IColumn* data_column = &column;
if (is_const_column) {
const auto& const_column = assert_cast<const ColumnConst&>(column);
data_column = &(const_column.get_data_column());
}
const auto& map_column = assert_cast<const ColumnMap&>(*data_column);
size = size + sizeof(ColumnArray::Offset64) * real_need_copy_num;
size = size + get_key_type()->get_uncompressed_serialized_bytes(map_column.get_keys(),
data_version);
size = size + get_value_type()->get_uncompressed_serialized_bytes(map_column.get_values(),
data_version);
return size;
} else {
auto ptr = column.convert_to_full_column_if_const();
const auto& data_column = assert_cast<const ColumnMap&>(*ptr.get());
return sizeof(ColumnArray::Offset64) * (column.size() + 1) +
get_key_type()->get_uncompressed_serialized_bytes(data_column.get_keys(),
data_version) +
get_value_type()->get_uncompressed_serialized_bytes(data_column.get_values(),
data_version);
}
}
// serialize to binary
char* DataTypeMap::serialize(const IColumn& column, char* buf, int be_exec_version) const {
if (be_exec_version >= USE_CONST_SERDE) {
const auto* data_column = &column;
size_t real_need_copy_num = 0;
buf = serialize_const_flag_and_row_num(&data_column, buf, &real_need_copy_num);
const auto& map_column = assert_cast<const ColumnMap&>(*data_column);
// offsets
memcpy(buf, map_column.get_offsets().data(),
real_need_copy_num * sizeof(ColumnArray::Offset64));
buf += real_need_copy_num * sizeof(ColumnArray::Offset64);
// key value
buf = get_key_type()->serialize(map_column.get_keys(), buf, be_exec_version);
return get_value_type()->serialize(map_column.get_values(), buf, be_exec_version);
} else {
auto ptr = column.convert_to_full_column_if_const();
const auto& map_column = assert_cast<const ColumnMap&>(*ptr.get());
// row num
*reinterpret_cast<ColumnArray::Offset64*>(buf) = column.size();
buf += sizeof(ColumnArray::Offset64);
// offsets
memcpy(buf, map_column.get_offsets().data(), column.size() * sizeof(ColumnArray::Offset64));
buf += column.size() * sizeof(ColumnArray::Offset64);
// key value
buf = get_key_type()->serialize(map_column.get_keys(), buf, be_exec_version);
return get_value_type()->serialize(map_column.get_values(), buf, be_exec_version);
}
}
const char* DataTypeMap::deserialize(const char* buf, MutableColumnPtr* column,
int be_exec_version) const {
if (be_exec_version >= USE_CONST_SERDE) {
auto* origin_column = column->get();
size_t real_have_saved_num = 0;
buf = deserialize_const_flag_and_row_num(buf, column, &real_have_saved_num);
auto* map_column = assert_cast<ColumnMap*>(origin_column);
auto& map_offsets = map_column->get_offsets();
// offsets
map_offsets.resize(real_have_saved_num);
memcpy(map_offsets.data(), buf, sizeof(ColumnArray::Offset64) * real_have_saved_num);
buf += sizeof(ColumnArray::Offset64) * real_have_saved_num;
// key value
auto nested_keys_column = map_column->get_keys_ptr()->assume_mutable();
auto nested_values_column = map_column->get_values_ptr()->assume_mutable();
buf = get_key_type()->deserialize(buf, &nested_keys_column, be_exec_version);
buf = get_value_type()->deserialize(buf, &nested_values_column, be_exec_version);
return buf;
} else {
auto* map_column = assert_cast<ColumnMap*>(column->get());
auto& map_offsets = map_column->get_offsets();
// row num
ColumnArray::Offset64 row_num = *reinterpret_cast<const ColumnArray::Offset64*>(buf);
buf += sizeof(ColumnArray::Offset64);
// offsets
map_offsets.resize(row_num);
memcpy(map_offsets.data(), buf, sizeof(ColumnArray::Offset64) * row_num);
buf += sizeof(ColumnArray::Offset64) * row_num;
// key value
auto nested_keys_column = map_column->get_keys_ptr()->assume_mutable();
auto nested_values_column = map_column->get_values_ptr()->assume_mutable();
buf = get_key_type()->deserialize(buf, &nested_keys_column, be_exec_version);
return get_value_type()->deserialize(buf, &nested_values_column, be_exec_version);
}
}
} // namespace doris::vectorized