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4088c0a7f3
Automated register all functions with below naming convention by iterating through the symbols: void DB::registerXXX(DB::FunctionFactory &)
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
#include <Functions/replicate.h>
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#include <Functions/IFunction.h>
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#include <Functions/FunctionFactory.h>
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#include <Functions/FunctionHelpers.h>
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#include <DataTypes/DataTypeArray.h>
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#include <Columns/ColumnArray.h>
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#include <Interpreters/Context.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int ILLEGAL_COLUMN;
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extern const int TOO_FEW_ARGUMENTS_FOR_FUNCTION;
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}
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DataTypePtr FunctionReplicate::getReturnTypeImpl(const DataTypes & arguments) const
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{
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if (arguments.size() < 2)
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throw Exception(ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION,
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"Function {} expect at least two arguments, got {}", getName(), arguments.size());
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for (size_t i = 1; i < arguments.size(); ++i)
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{
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const DataTypeArray * array_type = checkAndGetDataType<DataTypeArray>(arguments[i].get());
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if (!array_type)
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Argument {} for function {} must be array.",
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i + 1, getName());
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}
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return std::make_shared<DataTypeArray>(arguments[0]);
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}
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ColumnPtr FunctionReplicate::executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t) const
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{
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ColumnPtr first_column = arguments[0].column;
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ColumnPtr offsets;
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for (size_t i = 1; i < arguments.size(); ++i)
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{
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const ColumnArray * array_column = checkAndGetColumn<ColumnArray>(arguments[i].column.get());
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ColumnPtr temp_column;
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if (!array_column)
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{
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const auto * const_array_column = checkAndGetColumnConst<ColumnArray>(arguments[i].column.get());
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if (!const_array_column)
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throw Exception("Unexpected column for replicate", ErrorCodes::ILLEGAL_COLUMN);
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temp_column = const_array_column->convertToFullColumn();
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array_column = checkAndGetColumn<ColumnArray>(temp_column.get());
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}
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if (!offsets || offsets->empty())
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offsets = array_column->getOffsetsPtr();
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}
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const auto & offsets_data = assert_cast<const ColumnArray::ColumnOffsets &>(*offsets).getData(); /// NOLINT
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return ColumnArray::create(first_column->replicate(offsets_data)->convertToFullColumnIfConst(), offsets);
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}
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REGISTER_FUNCTION(Replicate)
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{
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factory.registerFunction<FunctionReplicate>();
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}
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}
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