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Copy pathdata_type_bitmap.cpp
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197 lines (173 loc) · 7.86 KB
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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 "vec/data_types/data_type_bitmap.h"
#include <utility>
#include "agent/be_exec_version_manager.h"
#include "util/bitmap_value.h"
#include "vec/columns/column.h"
#include "vec/columns/column_complex.h"
#include "vec/columns/column_const.h"
#include "vec/common/assert_cast.h"
#include "vec/common/string_buffer.hpp"
#include "vec/common/string_ref.h"
#include "vec/io/io_helper.h"
namespace doris::vectorized {
#include "common/compile_check_begin.h"
// binary: const flag| row num | real saved num | size array | bitmap array
// <size array>: bitmap1 size | bitmap2 size | ...
// <bitmap array>: bitmap1 | bitmap2 | ...
int64_t DataTypeBitMap::get_uncompressed_serialized_bytes(const IColumn& column,
int be_exec_version) const {
if (be_exec_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* bitmap_column = &column;
if (is_const_column) {
const auto& const_column = assert_cast<const ColumnConst&>(column);
bitmap_column = &(const_column.get_data_column());
}
const auto& data_column = assert_cast<const ColumnBitmap&>(*bitmap_column);
auto allocate_len_size = sizeof(size_t) * real_need_copy_num;
size_t allocate_content_size = 0;
for (size_t i = 0; i < real_need_copy_num; ++i) {
auto& bitmap = const_cast<BitmapValue&>(data_column.get_element(i));
allocate_content_size += bitmap.getSizeInBytes();
}
return size + allocate_len_size + allocate_content_size;
} else {
auto ptr = column.convert_to_full_column_if_const();
const auto& data_column = assert_cast<const ColumnBitmap&>(*ptr);
auto allocate_len_size = sizeof(size_t) * (column.size() + 1);
size_t allocate_content_size = 0;
for (size_t i = 0; i < column.size(); ++i) {
auto& bitmap = const_cast<BitmapValue&>(data_column.get_element(i));
allocate_content_size += bitmap.getSizeInBytes();
}
return allocate_len_size + allocate_content_size;
}
}
char* DataTypeBitMap::serialize(const IColumn& column, char* buf, int be_exec_version) const {
if (be_exec_version >= USE_CONST_SERDE) {
const auto* bitmap_column = &column;
size_t real_need_copy_num = 0;
buf = serialize_const_flag_and_row_num(&bitmap_column, buf, &real_need_copy_num);
const auto& data_column = assert_cast<const ColumnBitmap&>(*bitmap_column);
// serialize the bitmap size array
size_t* meta_ptr = (size_t*)buf;
for (size_t i = 0; i < real_need_copy_num; ++i) {
auto& bitmap = const_cast<BitmapValue&>(data_column.get_element(i));
meta_ptr[i] = bitmap.getSizeInBytes();
}
// serialize each bitmap
char* data_ptr = buf + sizeof(size_t) * real_need_copy_num;
for (size_t i = 0; i < real_need_copy_num; ++i) {
auto& bitmap = const_cast<BitmapValue&>(data_column.get_element(i));
bitmap.write_to(data_ptr);
data_ptr += meta_ptr[i];
}
return data_ptr;
} else {
auto ptr = column.convert_to_full_column_if_const();
const auto& data_column = assert_cast<const ColumnBitmap&>(*ptr);
// serialize the bitmap size array, row num saves at index 0
size_t* meta_ptr = (size_t*)buf;
meta_ptr[0] = column.size();
for (size_t i = 0; i < meta_ptr[0]; ++i) {
auto& bitmap = const_cast<BitmapValue&>(data_column.get_element(i));
meta_ptr[i + 1] = bitmap.getSizeInBytes();
}
// serialize each bitmap
char* data_ptr = buf + sizeof(size_t) * (meta_ptr[0] + 1);
for (size_t i = 0; i < meta_ptr[0]; ++i) {
auto& bitmap = const_cast<BitmapValue&>(data_column.get_element(i));
bitmap.write_to(data_ptr);
data_ptr += meta_ptr[i + 1];
}
return data_ptr;
}
}
const char* DataTypeBitMap::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);
// deserialize the bitmap size array
auto& data_column = assert_cast<ColumnBitmap&>(*origin_column);
auto& data = data_column.get_data();
// deserialize each bitmap
data.resize(real_have_saved_num);
const auto* meta_ptr = reinterpret_cast<const size_t*>(buf);
const char* data_ptr = buf + sizeof(size_t) * real_have_saved_num;
for (size_t i = 0; i < real_have_saved_num; ++i) {
data[i].deserialize(data_ptr);
data_ptr += meta_ptr[i];
}
return data_ptr;
} else {
auto& data_column = assert_cast<ColumnBitmap&>(*(column->get()));
auto& data = data_column.get_data();
// deserialize the bitmap size array
const size_t* meta_ptr = reinterpret_cast<const size_t*>(buf);
// deserialize each bitmap
data.resize(meta_ptr[0]);
const char* data_ptr = buf + sizeof(size_t) * (meta_ptr[0] + 1);
for (size_t i = 0; i < meta_ptr[0]; ++i) {
data[i].deserialize(data_ptr);
data_ptr += meta_ptr[i + 1];
}
return data_ptr;
}
}
MutableColumnPtr DataTypeBitMap::create_column() const {
return ColumnBitmap::create();
}
void DataTypeBitMap::serialize_as_stream(const BitmapValue& cvalue, BufferWritable& buf) {
auto& value = const_cast<BitmapValue&>(cvalue);
std::string memory_buffer;
size_t bytesize = value.getSizeInBytes();
memory_buffer.resize(bytesize);
value.write_to(const_cast<char*>(memory_buffer.data()));
write_string_binary(memory_buffer, buf);
}
void DataTypeBitMap::deserialize_as_stream(BitmapValue& value, BufferReadable& buf) {
StringRef ref;
read_string_binary(ref, buf);
value.deserialize(ref.data);
}
void DataTypeBitMap::to_string(const IColumn& column, size_t row_num, BufferWritable& ostr) const {
auto result = check_column_const_set_readability(column, row_num);
ColumnPtr ptr = result.first;
row_num = result.second;
auto& data =
const_cast<BitmapValue&>(assert_cast<const ColumnBitmap&>(*ptr).get_element(row_num));
std::string buffer(data.getSizeInBytes(), '0');
data.write_to(const_cast<char*>(buffer.data()));
ostr.write(buffer.c_str(), buffer.size());
}
Status DataTypeBitMap::from_string(ReadBuffer& rb, IColumn* column) const {
auto& data_column = assert_cast<ColumnBitmap&>(*column);
auto& data = data_column.get_data();
BitmapValue value;
if (!value.deserialize(rb.to_string().c_str())) {
return Status::InternalError("deserialize BITMAP from string fail!");
}
data.push_back(std::move(value));
return Status::OK();
}
} // namespace doris::vectorized