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52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
#include <AggregateFunctions/AggregateFunctionFactory.h>
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#include <AggregateFunctions/AggregateFunctionBitwise.h>
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#include <AggregateFunctions/Helpers.h>
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#include <AggregateFunctions/FactoryHelpers.h>
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#include "registerAggregateFunctions.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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}
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namespace
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{
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template <template <typename> class Data>
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AggregateFunctionPtr createAggregateFunctionBitwise(const std::string & name, const DataTypes & argument_types, const Array & parameters)
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{
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assertNoParameters(name, parameters);
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assertUnary(name, argument_types);
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if (!argument_types[0]->canBeUsedInBitOperations())
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throw Exception("The type " + argument_types[0]->getName() + " of argument for aggregate function " + name
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+ " is illegal, because it cannot be used in bitwise operations",
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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AggregateFunctionPtr res(createWithUnsignedIntegerType<AggregateFunctionBitwise, Data>(*argument_types[0], argument_types[0]));
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if (!res)
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throw Exception("Illegal type " + argument_types[0]->getName() + " of argument for aggregate function " + name, ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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return res;
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}
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}
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void registerAggregateFunctionsBitwise(AggregateFunctionFactory & factory)
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{
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factory.registerFunction("groupBitOr", createAggregateFunctionBitwise<AggregateFunctionGroupBitOrData>);
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factory.registerFunction("groupBitAnd", createAggregateFunctionBitwise<AggregateFunctionGroupBitAndData>);
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factory.registerFunction("groupBitXor", createAggregateFunctionBitwise<AggregateFunctionGroupBitXorData>);
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/// Aliases for compatibility with MySQL.
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factory.registerAlias("BIT_OR", "groupBitOr", AggregateFunctionFactory::CaseInsensitive);
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factory.registerAlias("BIT_AND", "groupBitAnd", AggregateFunctionFactory::CaseInsensitive);
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factory.registerAlias("BIT_XOR", "groupBitXor", AggregateFunctionFactory::CaseInsensitive);
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}
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}
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