com.vertica.sdk.MultiPhaseTransformFunctionFactory Class Reference

Inheritance diagram for com.vertica.sdk.MultiPhaseTransformFunctionFactory:

Collaboration diagram for com.vertica.sdk.MultiPhaseTransformFunctionFactory:

Public Member Functions
void	getParameterType (ServerInterface srvInterface, SizedColumnTypes parameterTypes)
void	getPerInstanceResources (ServerInterface srvInterface, VResources res)
void	getPerInstanceResources (ServerInterface srvInterface, VResources res, SizedColumnTypes argTypes)
abstract void	getPhases (ServerInterface srvInterface, Vector< TransformFunctionPhase > phases)
void	getPrototype (ServerInterface srvInterface, ColumnTypes argTypes, ColumnTypes returnType)
void	getReturnType (ServerInterface srvInterface, SizedColumnTypes argTypes, SizedColumnTypes returnType) throws UdfException
UDXType	getUDXFactoryType ()

Protected Attributes
long	libOid
String	sqlName

Detailed Description

Interface for declaring parameters and return types for, and instantiating, an associated multi-phase transform function. This class is similar to, but not a subclass of, TransformFunctionFactory.

A multi-phase transform function is made up of TransformFunctionPhase instances. For each phase of your transform, extend this class (not TransformFunction). In getPhases(), return a vector of instances of those classes. Semantically, getPhases() replaces TransformFunctionFactory.createTransformFunction().

Member Function Documentation

getParameterType()

void com.vertica.sdk.UDXFactory.getParameterType ( ServerInterface  srvInterface, SizedColumnTypes  parameterTypes  )

inherited

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.

Parameters

srvInterface	a ServerInterface object used to communicate with Vertica
parameterTypes	SizedColumnTypes describing the parameters

getPerInstanceResources() [1/2]

void com.vertica.sdk.UDXFactory.getPerInstanceResources ( ServerInterface  srvInterface, VResources  res  )

inherited

Set the resource required for each instance of the UDX Object subclass

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

Referenced by com.vertica.sdk.UDXFactory.getPerInstanceResources().

getPerInstanceResources() [2/2]

void com.vertica.sdk.UDXFactory.getPerInstanceResources ( ServerInterface  srvInterface, VResources  res, SizedColumnTypes  argTypes  )

inherited

Set the resource required for each instance of the UDX Object subclass

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 UDx was called with. This may be used to calculate the resources required by the UDx.

getPhases()

abstract void com.vertica.sdk.MultiPhaseTransformFunctionFactory.getPhases ( ServerInterface  srvInterface, Vector< TransformFunctionPhase >  phases  )

abstract

Called when Vertica needs a new TransformFunctionPhase pipeline to process a multi-phase UDTF function call. Vertica invokes the phases in order; collectively they behave like a TransformFunction.

Note: More than one object may be instantiated per query.

Parameters

srvInterface	a ServerInterface object used to communicate with Vertica
phases	output TransformFunctionPhase objects

getUDXFactoryType()

UDXType com.vertica.sdk.MultiPhaseTransformFunctionFactory.getUDXFactoryType

(

)

Returns

the object type internally used by Vertica