Vertica::UDXFactory Class Reference

Parent class for UDx factories; not intended for direct use by applications. More...

Inheritance diagram for Vertica::UDXFactory:

Collaboration diagram for Vertica::UDXFactory:

Public Types
enum	UDXType {   SCALAR = 1, TRANSFORM = 2, ANALYTIC = 3, MULTI_TRANSFORM = 4,   AGGREGATE = 5, LOAD_SOURCE = 6, LOAD_FILTER = 7, LOAD_PARSER = 8,   FILESYSTEM = 9, TYPE = 10, CURSOR_TRANSFORM = 11 }

Public Member Functions
virtual void	getParameterType (ServerInterface &srvInterface, SizedColumnTypes &parameterTypes)
virtual void	getPerInstanceResources (ServerInterface &srvInterface, VResources &res)
virtual void	getPerInstanceResources (ServerInterface &srvInterface, VResources &res, const SizedColumnTypes &inputTypes)
virtual UDXType	getUDXFactoryType ()=0

Protected Attributes
Oid	libOid
std::string	sqlName

Friends
class	::UdfSupport

Detailed Description

Parent class for UDx factories; not intended for direct use by applications.

Member Enumeration Documentation

enum Vertica::UDXFactory::UDXType

The type of UDX instance this factory produces

Enumerator
SCALAR	*/

Member Function Documentation

virtual void Vertica::UDXFactory::getParameterType ( ServerInterface &  srvInterface, SizedColumnTypes &  parameterTypes  )

inlinevirtual

Function to tell Vertica the name and types of parameters that this function uses. Vertica will use this to warn function callers that certain parameters they provide are not affecting anything, or that certain parameters that are not being set are reverting to default values.

virtual void Vertica::UDXFactory::getPerInstanceResources ( ServerInterface &  srvInterface, VResources &  res  )

inlinevirtual

Set the resource required for each instance of the UDX Object subclass. Users should override only one of the following methods.

Parameters

srvInterface	a ServerInterface object used to communicate with Vertica
res	a VResources object used to tell Vertica what resources are needed by the UDX

virtual void Vertica::UDXFactory::getPerInstanceResources ( ServerInterface &  srvInterface, VResources &  res, const SizedColumnTypes &  inputTypes  )

inlinevirtual

Set the resource required for each instance of the UDX Object subclass. Users should override only one of the following methods.

Parameters

srvInterface	a ServerInterface object used to communicate with Vertica
res	a VResources object used to tell Vertica what resources are needed by the UDX
argTypes	Provides the data types of arguments that this UDT was called with

virtual UDXType Vertica::UDXFactory::getUDXFactoryType ( )

pure virtual

Returns

the type of UDX Object instance this factory returns.

Note

User subclasses should use the appropriate subclass of UDXFactory and not override this method on their own.

Implemented in Vertica::AggregateFunctionFactory, Vertica::AnalyticFunctionFactory, Vertica::TransformFunctionFactory, Vertica::ScalarFunctionFactory, and Vertica::UDFileSystemFactory.