hex.createframe

Class CreateFramePostprocessStep

java.lang.Object

water.Iced<CreateFramePostprocessStep>

hex.createframe.CreateFramePostprocessStep

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable<CreateFramePostprocessStep>

Direct Known Subclasses:

MissingInserterCfps, ShuffleColumnsCfps

public abstract class CreateFramePostprocessStep
extends Iced<CreateFramePostprocessStep>

Base class for any "postprocessing" steps that should be undertaken after the frame has been created using CreateFrameColumnMakers.

Each postprocess step takes a frame as an input, and then modifies it in-place. Examples of such postprocessing tasks could be: column renaming / reordering; removal of some temporary columns; etc.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CreateFramePostprocessStep()

Method Summary

Modifier and Type	Method and Description
abstract void	exec(Frame fr, java.util.Random rng) This method performs the actual work of the postprocessing task.
int	workAmount() Approximate work amount for this step.

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CreateFramePostprocessStep

public CreateFramePostprocessStep()

Method Detail

exec

public abstract void exec(Frame fr,
                          java.util.Random rng)

This method performs the actual work of the postprocessing task.

Parameters:

fr - Frame that the task modifies.

rng - Random number generator to use if the task needs to modify the frame randomly.

workAmount

public int workAmount()

Approximate work amount for this step. The default value of 100 is the same as each column maker's amount of work per chunk.