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#include <AggregateFunctions/AggregateFunctionFactory.h>
#include <AggregateFunctions/AggregateFunctionWindowFunnel.h>
#include <AggregateFunctions/FactoryHelpers.h>
#include <AggregateFunctions/Helpers.h>
#include <Core/Settings.h>
#include <DataTypes/DataTypeDate.h>
#include <DataTypes/DataTypeDate32.h>
#include <DataTypes/DataTypeDateTime.h>
#include <base/range.h>
namespace DB
{
struct Settings;
namespace ErrorCodes
{
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
}
namespace
{
template <template <typename> class Data>
AggregateFunctionPtr
createAggregateFunctionWindowFunnel(const std::string & name, const DataTypes & arguments, const Array & params, const Settings *)
{
if (params.empty())
throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH,
"Aggregate function {} requires at least one parameter: <window>, [option, [option, ...]]",
name);
if (arguments.size() < 2)
throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH,
"Aggregate function {} requires one timestamp argument and at least one event condition.", name);
if (arguments.size() > max_events + 1)
throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH, "Too many event arguments for aggregate function {}", name);
for (const auto i : collections::range(1, arguments.size()))
{
const auto * cond_arg = arguments[i].get();
if (!isUInt8(cond_arg))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Illegal type {} of argument {} of aggregate function {}, must be UInt8",
cond_arg->getName(), toString(i + 1), name);
}
AggregateFunctionPtr res(createWithUnsignedIntegerType<AggregateFunctionWindowFunnel, Data>(*arguments[0], arguments, params));
WhichDataType which(arguments.front().get());
if (res)
return res;
else if (which.isDate())
return std::make_shared<AggregateFunctionWindowFunnel<DataTypeDate::FieldType, Data<DataTypeDate::FieldType>>>(arguments, params);
else if (which.isDateTime())
return std::make_shared<AggregateFunctionWindowFunnel<DataTypeDateTime::FieldType, Data<DataTypeDateTime::FieldType>>>(arguments, params);
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
"Illegal type {} of first argument of aggregate function {}, must "
"be Unsigned Number, Date, DateTime", arguments.front().get()->getName(), name);
}
}
void registerAggregateFunctionWindowFunnel(AggregateFunctionFactory & factory)
{
factory.registerFunction("windowFunnel", createAggregateFunctionWindowFunnel<AggregateFunctionWindowFunnelData>);
}
}
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