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#pragma once
#include <yql/essentials/minikql/computation/mkql_computation_node.h>
#include <yql/essentials/minikql/computation/mkql_computation_node_holders.h>
namespace NKikimr {
namespace NMiniKQL {
class IAggColumnBuilder {
public:
virtual ~IAggColumnBuilder() = default;
virtual void Add(const void* state) = 0;
virtual NUdf::TUnboxedValue Build() = 0;
};
class IBlockAggregatorBase {
public:
virtual ~IBlockAggregatorBase() = default;
const ui32 StateSize;
explicit IBlockAggregatorBase(ui32 stateSize)
: StateSize(stateSize)
{}
virtual void DestroyState(void* state) noexcept = 0;
};
class IBlockAggregatorCombineAll : public IBlockAggregatorBase {
public:
virtual void InitState(void* state) = 0;
virtual void AddMany(void* state, const NUdf::TUnboxedValue* columns, ui64 batchLength, std::optional<ui64> filtered) = 0;
virtual NUdf::TUnboxedValue FinishOne(const void* state) = 0;
explicit IBlockAggregatorCombineAll(ui32 stateSize)
: IBlockAggregatorBase(stateSize)
{}
};
class IBlockAggregatorCombineKeys : public IBlockAggregatorBase {
public:
virtual void InitKey(void* state, ui64 batchNum, const NUdf::TUnboxedValue* columns, ui64 row) = 0;
virtual void UpdateKey(void* state, ui64 batchNum, const NUdf::TUnboxedValue* columns, ui64 row) = 0;
virtual std::unique_ptr<IAggColumnBuilder> MakeStateBuilder(ui64 size) = 0;
explicit IBlockAggregatorCombineKeys(ui32 stateSize)
: IBlockAggregatorBase(stateSize)
{}
};
class IBlockAggregatorFinalizeKeys : public IBlockAggregatorBase {
public:
virtual void LoadState(void* state, ui64 batchNum, const NUdf::TUnboxedValue* columns, ui64 row) = 0;
virtual void UpdateState(void* state, ui64 batchNum, const NUdf::TUnboxedValue* columns, ui64 row) = 0;
virtual std::unique_ptr<IAggColumnBuilder> MakeResultBuilder(ui64 size) = 0;
explicit IBlockAggregatorFinalizeKeys(ui32 stateSize)
: IBlockAggregatorBase(stateSize)
{}
};
template <typename TBase>
class TBlockAggregatorBase : public TBase {
public:
TBlockAggregatorBase(ui32 stateSize, std::optional<ui32> filterColumn, TComputationContext& ctx)
: TBase(stateSize)
, FilterColumn_(filterColumn)
, Ctx_(ctx)
{
}
protected:
const std::optional<ui32> FilterColumn_;
TComputationContext& Ctx_;
};
template <typename T>
class IPreparedBlockAggregator {
public:
virtual ~IPreparedBlockAggregator() = default;
virtual std::unique_ptr<T> Make(TComputationContext& ctx) const = 0;
const ui32 StateSize;
explicit IPreparedBlockAggregator(ui32 stateSize)
: StateSize(stateSize)
{}
};
class IBlockAggregatorFactory {
public:
virtual ~IBlockAggregatorFactory() = default;
virtual std::unique_ptr<IPreparedBlockAggregator<IBlockAggregatorCombineAll>> PrepareCombineAll(
TTupleType* tupleType,
std::optional<ui32> filterColumn,
const std::vector<ui32>& argsColumns,
const TTypeEnvironment& env) const = 0;
virtual std::unique_ptr<IPreparedBlockAggregator<IBlockAggregatorCombineKeys>> PrepareCombineKeys(
TTupleType* tupleType,
const std::vector<ui32>& argsColumns,
const TTypeEnvironment& env) const = 0;
virtual std::unique_ptr<IPreparedBlockAggregator<IBlockAggregatorFinalizeKeys>> PrepareFinalizeKeys(
TTupleType* tupleType,
const std::vector<ui32>& argsColumns,
const TTypeEnvironment& env,
TType* returnType,
ui32 hint) const = 0;
};
const IBlockAggregatorFactory& GetBlockAggregatorFactory(TStringBuf name);
struct TCombineAllTag {
using TAggregator = IBlockAggregatorCombineAll;
using TPreparedAggregator = IPreparedBlockAggregator<TAggregator>;
using TBase = TBlockAggregatorBase<TAggregator>;
};
struct TCombineKeysTag {
using TAggregator = IBlockAggregatorCombineKeys;
using TPreparedAggregator = IPreparedBlockAggregator<TAggregator>;
using TBase = TBlockAggregatorBase<TAggregator>;
};
struct TFinalizeKeysTag {
using TAggregator = IBlockAggregatorFinalizeKeys;
using TPreparedAggregator = IPreparedBlockAggregator<TAggregator>;
using TBase = TBlockAggregatorBase<TAggregator>;
};
}
}
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