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#include "mkql_block_trimmer.h"
#include <yql/essentials/minikql/arrow/arrow_util.h>
#include <yql/essentials/public/decimal/yql_decimal.h>
#include <yql/essentials/public/udf/arrow/defs.h>
#include <yql/essentials/public/udf/arrow/dispatch_traits.h>
#include <yql/essentials/public/udf/arrow/util.h>
#include <yql/essentials/public/udf/udf_type_inspection.h>
#include <yql/essentials/public/udf/udf_value.h>
#include <yql/essentials/public/udf/udf_value_builder.h>
#include <yql/essentials/utils/yql_panic.h>
#include <arrow/array/data.h>
#include <arrow/datum.h>
namespace NKikimr::NMiniKQL {
class TBlockTrimmerBase : public IBlockTrimmer {
protected:
TBlockTrimmerBase(arrow::MemoryPool* pool)
: Pool_(pool)
{}
TBlockTrimmerBase() = delete;
std::shared_ptr<arrow::Buffer> TrimNullBitmap(const std::shared_ptr<arrow::ArrayData>& array) {
auto& nullBitmapBuffer = array->buffers[0];
std::shared_ptr<arrow::Buffer> result;
auto nullCount = array->GetNullCount();
if (nullCount == array->length) {
result = MakeDenseFalseBitmap(array->length, Pool_);
} else if (nullCount > 0) {
result = MakeDenseBitmapCopy(nullBitmapBuffer->data(), array->length, array->offset, Pool_);
}
return result;
}
protected:
arrow::MemoryPool* Pool_;
};
template<typename TLayout, bool Nullable>
class TFixedSizeBlockTrimmer : public TBlockTrimmerBase {
public:
TFixedSizeBlockTrimmer(arrow::MemoryPool* pool)
: TBlockTrimmerBase(pool)
{}
std::shared_ptr<arrow::ArrayData> Trim(const std::shared_ptr<arrow::ArrayData>& array) override {
Y_ENSURE(array->buffers.size() == 2);
Y_ENSURE(array->child_data.empty());
std::shared_ptr<arrow::Buffer> trimmedNullBitmap;
if constexpr (Nullable) {
trimmedNullBitmap = TrimNullBitmap(array);
}
auto origData = array->GetValues<TLayout>(1);
auto dataSize = sizeof(TLayout) * array->length;
auto trimmedDataBuffer = NUdf::AllocateResizableBuffer(dataSize, Pool_);
memcpy(trimmedDataBuffer->mutable_data(), origData, dataSize);
return arrow::ArrayData::Make(array->type, array->length, {std::move(trimmedNullBitmap), std::move(trimmedDataBuffer)}, array->GetNullCount());
}
};
template<bool Nullable>
class TResourceBlockTrimmer : public TBlockTrimmerBase {
public:
TResourceBlockTrimmer(arrow::MemoryPool* pool)
: TBlockTrimmerBase(pool)
{}
std::shared_ptr<arrow::ArrayData> Trim(const std::shared_ptr<arrow::ArrayData>& array) override {
Y_ENSURE(array->buffers.size() == 2);
Y_ENSURE(array->child_data.empty());
std::shared_ptr<arrow::Buffer> trimmedNullBitmap;
if constexpr (Nullable) {
trimmedNullBitmap = TrimNullBitmap(array);
}
auto origData = array->GetValues<NUdf::TUnboxedValue>(1);
auto dataSize = sizeof(NUdf::TUnboxedValue) * array->length;
auto trimmedBuffer = NUdf::AllocateResizableBuffer<NUdf::TResizableManagedBuffer<NUdf::TUnboxedValue>>(dataSize, Pool_);
ARROW_OK(trimmedBuffer->Resize(dataSize));
auto trimmedBufferData = reinterpret_cast<NUdf::TUnboxedValue*>(trimmedBuffer->mutable_data());
for (int64_t i = 0; i < array->length; i++) {
::new(&trimmedBufferData[i]) NUdf::TUnboxedValue(origData[i]);
}
return arrow::ArrayData::Make(array->type, array->length, {std::move(trimmedNullBitmap), std::move(trimmedBuffer)}, array->GetNullCount());
}
};
template<typename TStringType, bool Nullable>
class TStringBlockTrimmer : public TBlockTrimmerBase {
using TOffset = typename TStringType::offset_type;
public:
TStringBlockTrimmer(arrow::MemoryPool* pool)
: TBlockTrimmerBase(pool)
{}
std::shared_ptr<arrow::ArrayData> Trim(const std::shared_ptr<arrow::ArrayData>& array) override {
Y_ENSURE(array->buffers.size() == 3);
Y_ENSURE(array->child_data.empty());
std::shared_ptr<arrow::Buffer> trimmedNullBitmap;
if constexpr (Nullable) {
trimmedNullBitmap = TrimNullBitmap(array);
}
auto origOffsetData = array->GetValues<TOffset>(1);
auto origStringData = reinterpret_cast<const char*>(array->buffers[2]->data() + origOffsetData[0]);
auto stringDataSize = origOffsetData[array->length] - origOffsetData[0];
auto trimmedOffsetBuffer = NUdf::AllocateResizableBuffer(sizeof(TOffset) * (array->length + 1), Pool_);
auto trimmedStringBuffer = NUdf::AllocateResizableBuffer(stringDataSize, Pool_);
auto trimmedOffsetBufferData = reinterpret_cast<TOffset*>(trimmedOffsetBuffer->mutable_data());
auto trimmedStringBufferData = reinterpret_cast<char*>(trimmedStringBuffer->mutable_data());
for (int64_t i = 0; i < array->length + 1; i++) {
trimmedOffsetBufferData[i] = origOffsetData[i] - origOffsetData[0];
}
memcpy(trimmedStringBufferData, origStringData, stringDataSize);
return arrow::ArrayData::Make(array->type, array->length, {std::move(trimmedNullBitmap), std::move(trimmedOffsetBuffer), std::move(trimmedStringBuffer)}, array->GetNullCount());
}
};
template<bool Nullable>
class TTupleBlockTrimmer : public TBlockTrimmerBase {
public:
TTupleBlockTrimmer(std::vector<IBlockTrimmer::TPtr> children, arrow::MemoryPool* pool)
: TBlockTrimmerBase(pool)
, Children_(std::move(children))
{}
std::shared_ptr<arrow::ArrayData> Trim(const std::shared_ptr<arrow::ArrayData>& array) override {
Y_ENSURE(array->buffers.size() == 1);
std::shared_ptr<arrow::Buffer> trimmedNullBitmap;
if constexpr (Nullable) {
trimmedNullBitmap = TrimNullBitmap(array);
}
std::vector<std::shared_ptr<arrow::ArrayData>> trimmedChildren;
Y_ENSURE(array->child_data.size() == Children_.size());
for (size_t i = 0; i < Children_.size(); i++) {
trimmedChildren.push_back(Children_[i]->Trim(array->child_data[i]));
}
return arrow::ArrayData::Make(array->type, array->length, {std::move(trimmedNullBitmap)}, std::move(trimmedChildren), array->GetNullCount());
}
protected:
TTupleBlockTrimmer(arrow::MemoryPool* pool)
: TBlockTrimmerBase(pool)
{}
protected:
std::vector<IBlockTrimmer::TPtr> Children_;
};
template<typename TDate, bool Nullable>
class TTzDateBlockTrimmer : public TTupleBlockTrimmer<Nullable> {
using TBase = TTupleBlockTrimmer<Nullable>;
using TDateLayout = typename NUdf::TDataType<TDate>::TLayout;
public:
TTzDateBlockTrimmer(arrow::MemoryPool* pool)
: TBase(pool)
{
this->Children_.push_back(std::make_unique<TFixedSizeBlockTrimmer<TDateLayout, false>>(pool));
this->Children_.push_back(std::make_unique<TFixedSizeBlockTrimmer<ui16, false>>(pool));
}
};
class TExternalOptionalBlockTrimmer : public TBlockTrimmerBase {
public:
TExternalOptionalBlockTrimmer(IBlockTrimmer::TPtr inner, arrow::MemoryPool* pool)
: TBlockTrimmerBase(pool)
, Inner_(std::move(inner))
{}
std::shared_ptr<arrow::ArrayData> Trim(const std::shared_ptr<arrow::ArrayData>& array) override {
Y_ENSURE(array->buffers.size() == 1);
Y_ENSURE(array->child_data.size() == 1);
auto trimmedNullBitmap = TrimNullBitmap(array);
auto trimmedInner = Inner_->Trim(array->child_data[0]);
return arrow::ArrayData::Make(array->type, array->length, {std::move(trimmedNullBitmap)}, {std::move(trimmedInner)}, array->GetNullCount());
}
private:
IBlockTrimmer::TPtr Inner_;
};
struct TTrimmerTraits {
using TResult = IBlockTrimmer;
template <bool Nullable>
using TTuple = TTupleBlockTrimmer<Nullable>;
template <typename T, bool Nullable>
using TFixedSize = TFixedSizeBlockTrimmer<T, Nullable>;
template <typename TStringType, bool Nullable, NKikimr::NUdf::EDataSlot>
using TStrings = TStringBlockTrimmer<TStringType, Nullable>;
using TExtOptional = TExternalOptionalBlockTrimmer;
template<bool Nullable>
using TResource = TResourceBlockTrimmer<Nullable>;
template<typename TTzDate, bool Nullable>
using TTzDateReader = TTzDateBlockTrimmer<TTzDate, Nullable>;
constexpr static bool PassType = false;
static TResult::TPtr MakePg(const NUdf::TPgTypeDescription& desc, const NUdf::IPgBuilder* pgBuilder, arrow::MemoryPool* pool) {
Y_UNUSED(pgBuilder);
if (desc.PassByValue) {
return std::make_unique<TFixedSize<ui64, true>>(pool);
} else {
return std::make_unique<TStrings<arrow::BinaryType, true, NKikimr::NUdf::EDataSlot::String>>(pool);
}
}
static TResult::TPtr MakeResource(bool isOptional, arrow::MemoryPool* pool) {
if (isOptional) {
return std::make_unique<TResource<true>>(pool);
} else {
return std::make_unique<TResource<false>>(pool);
}
}
template<typename TTzDate>
static TResult::TPtr MakeTzDate(bool isOptional, arrow::MemoryPool* pool) {
if (isOptional) {
return std::make_unique<TTzDateReader<TTzDate, true>>(pool);
} else {
return std::make_unique<TTzDateReader<TTzDate, false>>(pool);
}
}
};
IBlockTrimmer::TPtr MakeBlockTrimmer(const NUdf::ITypeInfoHelper& typeInfoHelper, const NUdf::TType* type, arrow::MemoryPool* pool) {
return DispatchByArrowTraits<TTrimmerTraits>(typeInfoHelper, type, nullptr, pool);
}
}
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