Inheritance diagram for com.vertica.sdk.UnsizedUDSource:

Collaboration diagram for com.vertica.sdk.UnsizedUDSource:

Public Member Functions
final void	cancelUDX (ServerInterface srvInterface)

void	destroy (ServerInterface srvInterface) throws UdfException

void	destroy (ServerInterface srvInterface, SessionParamWriterMap udSessionParams) throws UdfException

String	getUri ()

boolean	isCanceled ()

abstract StreamState	process (ServerInterface srvInterface, DataBuffer output) throws UdfException

void	setup (ServerInterface srvInterface) throws UdfException

Protected Member Functions
void	cancel (ServerInterface srvInterface)

Detailed Description

UnsizedUDSource

Base class for UDSource. Used with IterativeSourceFactory if computing the size of a source up front would be prohibitively expensive, or if the number of distinct sources would be prohibitively large to use the standard API.

Not intended or optimized for typical applications.

Member Function Documentation

void com.vertica.sdk.UDXObject.cancel ( ServerInterface srvInterface )

protectedinherited

Cancel callback to be overridden by the UDX implementation. Called when the query running the UDX has been canceled.

This method will be invoked at most once per UDX object. Once a UDX object has been canceled, it will never be un-canceled.
This method may be called from a separate thread, concurrently with other methods of this UDX object (but never the constructor). Implementations must be thread-safe with all methods of this UDX.
This method will be invoked for either an explicit user cancel, or in the event of an error during query execution.

Parameters

srvInterface a ServerInterface object used to communicate with Vertica

Referenced by com.vertica.sdk.UDXObject.cancelUDX().

final void com.vertica.sdk.UDXObject.cancelUDX ( ServerInterface srvInterface )

inherited

Cancel callback invoked when the query running the UDX has been canceled.

See cancel().

Parameters

srvInterface a ServerInterface object used to communicate with Vertica

String com.vertica.sdk.UnsizedUDSource.getUri ( )

UnsizedUDSource::getUri()

This function will be invoked during execution to fill in monitoring information.