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#include <AggregateFunctions/IAggregateFunction.h>
#include <DataTypes/DataTypeAggregateFunction.h>
namespace DB
{
DataTypePtr IAggregateFunction::getStateType() const
{
return std::make_shared<DataTypeAggregateFunction>(shared_from_this(), argument_types, parameters);
}
String IAggregateFunction::getDescription() const
{
String description;
description += getName();
description += '(';
for (const auto & parameter : parameters)
{
description += parameter.dump();
description += ", ";
}
if (!parameters.empty())
{
description.pop_back();
description.pop_back();
}
description += ')';
description += '(';
for (const auto & argument_type : argument_types)
{
description += argument_type->getName();
description += ", ";
}
if (!argument_types.empty())
{
description.pop_back();
description.pop_back();
}
description += ')';
return description;
}
bool IAggregateFunction::haveEqualArgumentTypes(const IAggregateFunction & rhs) const
{
return std::equal(
argument_types.begin(),
argument_types.end(),
rhs.argument_types.begin(),
rhs.argument_types.end(),
[](const auto & t1, const auto & t2) { return t1->equals(*t2); });
}
bool IAggregateFunction::haveSameStateRepresentation(const IAggregateFunction & rhs) const
{
const auto & lhs_base = getBaseAggregateFunctionWithSameStateRepresentation();
const auto & rhs_base = rhs.getBaseAggregateFunctionWithSameStateRepresentation();
return lhs_base.haveSameStateRepresentationImpl(rhs_base);
}
bool IAggregateFunction::haveSameStateRepresentationImpl(const IAggregateFunction & rhs) const
{
return getStateType()->equals(*rhs.getStateType());
}
}
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