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cpp-ch/local-engine/Functions/SparkFunctionArraysOverlap.cpp
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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 <Columns/ColumnString.h> | ||
#include <Columns/ColumnNullable.h> | ||
#include <Functions/IFunction.h> | ||
#include <Functions/FunctionFactory.h> | ||
#include <DataTypes/DataTypeString.h> | ||
#include <DataTypes/DataTypesNumber.h> | ||
#include <iostream> | ||
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using namespace DB; | ||
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namespace DB | ||
{ | ||
namespace ErrorCodes | ||
{ | ||
extern const int ILLEGAL_TYPE_OF_ARGUMENT; | ||
extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH; | ||
} | ||
} | ||
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namespace local_engine | ||
{ | ||
class SparkFunctionArraysOverlap : public IFunction | ||
{ | ||
public: | ||
static constexpr auto name = "sparkArraysOverlap"; | ||
static FunctionPtr create(ContextPtr) { return std::make_shared<SparkFunctionArraysOverlap>(); } | ||
SparkFunctionArraysOverlap() = default; | ||
~SparkFunctionArraysOverlap() override = default; | ||
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo &) const override { return true; } | ||
size_t getNumberOfArguments() const override { return 2; } | ||
String getName() const override { return name; } | ||
bool useDefaultImplementationForNulls() const override { return false; } | ||
bool useDefaultImplementationForConstants() const override { return false; } | ||
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DB::DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName &) const override | ||
{ | ||
auto data_type = std::make_shared<DataTypeUInt8>(); | ||
return makeNullable(data_type); | ||
} | ||
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override | ||
{ | ||
if (arguments.size() != 2) | ||
throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH, "Function {} must have 2 arguments", getName()); | ||
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auto res = ColumnUInt8::create(input_rows_count, 0); | ||
auto null_map = ColumnUInt8::create(input_rows_count, 0); | ||
PaddedPODArray<UInt8> & res_data = res->getData(); | ||
PaddedPODArray<UInt8> & null_map_data = null_map->getData(); | ||
if (input_rows_count == 0) | ||
return ColumnNullable::create(std::move(res), std::move(null_map)); | ||
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const ColumnArray * array_col_1 = nullptr, * array_col_2 = nullptr; | ||
const ColumnConst * const_col_1 = checkAndGetColumn<ColumnConst>(arguments[0].column.get()); | ||
const ColumnConst * const_col_2 = checkAndGetColumn<ColumnConst>(arguments[1].column.get()); | ||
if (const_col_1) | ||
array_col_1 = checkAndGetColumn<ColumnArray>(const_col_1->getDataColumnPtr().get()); | ||
else | ||
{ | ||
const auto * null_col_1 = checkAndGetColumn<ColumnNullable>(arguments[0].column.get()); | ||
array_col_1 = checkAndGetColumn<ColumnArray>(null_col_1->getNestedColumnPtr().get()); | ||
} | ||
if (const_col_2) | ||
array_col_2 = checkAndGetColumn<ColumnArray>(const_col_2->getDataColumnPtr().get()); | ||
else | ||
{ | ||
const auto * null_col_2 = checkAndGetColumn<ColumnNullable>(arguments[1].column.get()); | ||
array_col_2 = checkAndGetColumn<ColumnArray>(null_col_2->getNestedColumnPtr().get()); | ||
} | ||
if (!array_col_1 || !array_col_2) | ||
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Function {} 1st/2nd argument must be array type", getName()); | ||
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const ColumnArray::Offsets & array_offsets_1 = array_col_1->getOffsets(); | ||
const ColumnArray::Offsets & array_offsets_2 = array_col_2->getOffsets(); | ||
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size_t current_offset_1 = 0, current_offset_2 = 0; | ||
for (size_t i = 0; i < array_col_1->size(); ++i) | ||
{ | ||
if (arguments[0].column->isNullAt(i) || arguments[1].column->isNullAt(i)) | ||
{ | ||
null_map_data[i] = 1; | ||
continue; | ||
} | ||
size_t array_size_1 = array_offsets_1[i] - current_offset_1; | ||
size_t array_size_2 = array_offsets_2[i] - current_offset_2; | ||
bool has_null_equals = false; | ||
auto executeCompare = [&](const IColumn & col1, const IColumn & col2) -> void | ||
{ | ||
for (size_t j = 0; j < array_size_1 && !res_data[i]; ++j) | ||
{ | ||
for (size_t k = 0; k < array_size_2; ++k) | ||
{ | ||
if (col1.compareAt(j, k, col2, -1) == 0) | ||
{ | ||
if (!col1.isNullAt(j)) | ||
{ | ||
res_data[i] = 1; | ||
break; | ||
} | ||
else | ||
has_null_equals = true; | ||
} | ||
} | ||
} | ||
}; | ||
if (array_col_1->getData().getDataType() == array_col_2->getData().getDataType()) | ||
{ | ||
executeCompare(array_col_1->getData(), array_col_2->getData()); | ||
} | ||
else if (array_col_1->getData().isNullable() || array_col_2->getData().isNullable()) | ||
{ | ||
if (array_col_1->getData().isNullable()) | ||
{ | ||
const ColumnNullable * array_null_col_1 = assert_cast<const ColumnNullable *>(&array_col_1->getData()); | ||
executeCompare(array_null_col_1->getNestedColumn(), array_col_2->getData()); | ||
} | ||
if (array_col_2->getData().isNullable()) | ||
{ | ||
const ColumnNullable * array_null_col_2 = assert_cast<const ColumnNullable *>(&array_col_2->getData()); | ||
executeCompare(array_col_1->getData(), array_null_col_2->getNestedColumn()); | ||
} | ||
} | ||
if (!res_data[i] && has_null_equals) | ||
null_map_data[i] = 1; | ||
current_offset_1 = array_offsets_1[i]; | ||
current_offset_2 = array_offsets_2[i]; | ||
} | ||
return ColumnNullable::create(std::move(res), std::move(null_map)); | ||
} | ||
}; | ||
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REGISTER_FUNCTION(SparkArraysOverlap) | ||
{ | ||
factory.registerFunction<SparkFunctionArraysOverlap>(); | ||
} | ||
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} |
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