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#pragma once
#include <Columns/ColumnArray.h>
#include <Columns/ColumnVector.h>
#include <DataTypes/DataTypeArray.h>
#include <Functions/FunctionHelpers.h>
#include <Functions/IFunction.h>
#include <Interpreters/Context_fwd.h>
#include <Core/TypeId.h>
namespace DB
{
class Context;
namespace ErrorCodes
{
extern const int ILLEGAL_COLUMN;
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int BAD_ARGUMENTS;
extern const int LOGICAL_ERROR;
}
template <typename Method, typename Name>
class FunctionArrayScalarProduct : public IFunction
{
public:
static constexpr auto name = Name::name;
static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionArrayScalarProduct>(); }
private:
template <typename ResultType, typename T>
ColumnPtr executeNumber(const ColumnsWithTypeAndName & arguments) const
{
ColumnPtr res;
if ( (res = executeNumberNumber<ResultType, T, UInt8>(arguments))
|| (res = executeNumberNumber<ResultType, T, UInt16>(arguments))
|| (res = executeNumberNumber<ResultType, T, UInt32>(arguments))
|| (res = executeNumberNumber<ResultType, T, UInt64>(arguments))
|| (res = executeNumberNumber<ResultType, T, Int8>(arguments))
|| (res = executeNumberNumber<ResultType, T, Int16>(arguments))
|| (res = executeNumberNumber<ResultType, T, Int32>(arguments))
|| (res = executeNumberNumber<ResultType, T, Int64>(arguments))
|| (res = executeNumberNumber<ResultType, T, Float32>(arguments))
|| (res = executeNumberNumber<ResultType, T, Float64>(arguments)))
return res;
return nullptr;
}
template <typename ResultType, typename T, typename U>
ColumnPtr executeNumberNumber(const ColumnsWithTypeAndName & arguments) const
{
ColumnPtr col1 = arguments[0].column->convertToFullColumnIfConst();
ColumnPtr col2 = arguments[1].column->convertToFullColumnIfConst();
if (!col1 || !col2)
return nullptr;
const ColumnArray * col_array1 = checkAndGetColumn<ColumnArray>(col1.get());
const ColumnArray * col_array2 = checkAndGetColumn<ColumnArray>(col2.get());
if (!col_array1 || !col_array2)
return nullptr;
if (!col_array1->hasEqualOffsets(*col_array2))
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Array arguments for function {} must have equal sizes", getName());
const ColumnVector<T> * col_nested1 = checkAndGetColumn<ColumnVector<T>>(col_array1->getData());
const ColumnVector<U> * col_nested2 = checkAndGetColumn<ColumnVector<U>>(col_array2->getData());
if (!col_nested1 || !col_nested2)
return nullptr;
auto col_res = ColumnVector<ResultType>::create();
vector(
col_nested1->getData(),
col_nested2->getData(),
col_array1->getOffsets(),
col_res->getData());
return col_res;
}
template <typename ResultType, typename T, typename U>
static NO_INLINE void vector(
const PaddedPODArray<T> & data1,
const PaddedPODArray<U> & data2,
const ColumnArray::Offsets & offsets,
PaddedPODArray<ResultType> & result)
{
size_t size = offsets.size();
result.resize(size);
ColumnArray::Offset current_offset = 0;
for (size_t i = 0; i < size; ++i)
{
size_t array_size = offsets[i] - current_offset;
result[i] = Method::template apply<ResultType, T, U>(&data1[current_offset], &data2[current_offset], array_size);
current_offset = offsets[i];
}
}
public:
String getName() const override { return name; }
size_t getNumberOfArguments() const override { return 2; }
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
// Basic type check
std::vector<DataTypePtr> nested_types(2, nullptr);
for (size_t i = 0; i < getNumberOfArguments(); ++i)
{
const DataTypeArray * array_type = checkAndGetDataType<DataTypeArray>(arguments[i].get());
if (!array_type)
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "All arguments for function {} must be an array.", getName());
const auto & nested_type = array_type->getNestedType();
if (!isNativeNumber(nested_type) && !isEnum(nested_type))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "{} cannot process values of type {}",
getName(), nested_type->getName());
nested_types[i] = nested_type;
}
// Detail type check in Method, then return ReturnType
return Method::getReturnType(nested_types[0], nested_types[1]);
}
template <typename ResultType>
ColumnPtr executeWithResultType(const ColumnsWithTypeAndName & arguments) const
{
ColumnPtr res;
if (!((res = executeNumber<ResultType, UInt8>(arguments))
|| (res = executeNumber<ResultType, UInt16>(arguments))
|| (res = executeNumber<ResultType, UInt32>(arguments))
|| (res = executeNumber<ResultType, UInt64>(arguments))
|| (res = executeNumber<ResultType, Int8>(arguments))
|| (res = executeNumber<ResultType, Int16>(arguments))
|| (res = executeNumber<ResultType, Int32>(arguments))
|| (res = executeNumber<ResultType, Int64>(arguments))
|| (res = executeNumber<ResultType, Float32>(arguments))
|| (res = executeNumber<ResultType, Float64>(arguments))))
throw Exception(ErrorCodes::ILLEGAL_COLUMN,
"Illegal column {} of first argument of function {}", arguments[0].column->getName(), getName());
return res;
}
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t /* input_rows_count */) const override
{
switch (result_type->getTypeId())
{
#define SUPPORTED_TYPE(type) \
case TypeIndex::type: \
return executeWithResultType<type>(arguments); \
break;
SUPPORTED_TYPE(UInt8)
SUPPORTED_TYPE(UInt16)
SUPPORTED_TYPE(UInt32)
SUPPORTED_TYPE(UInt64)
SUPPORTED_TYPE(Int8)
SUPPORTED_TYPE(Int16)
SUPPORTED_TYPE(Int32)
SUPPORTED_TYPE(Int64)
SUPPORTED_TYPE(Float32)
SUPPORTED_TYPE(Float64)
#undef SUPPORTED_TYPE
default:
throw Exception(ErrorCodes::LOGICAL_ERROR, "Unexpected result type {}", result_type->getName());
}
}
};
}
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