Package org.apache.sysds.runtime.transform.encode

Class ColumnEncoderDummycode

java.lang.Object

org.apache.sysds.runtime.transform.encode.ColumnEncoder

org.apache.sysds.runtime.transform.encode.ColumnEncoderDummycode

All Implemented Interfaces:

Externalizable, Serializable, Comparable<ColumnEncoder>, Encoder

public class ColumnEncoderDummycode
extends ColumnEncoder

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.sysds.runtime.transform.encode.ColumnEncoder

ColumnEncoder.EncoderType

Field Summary

Fields

Modifier and Type	Field	Description
int	_domainSize	The number of columns outputted from this column group.

Fields inherited from class org.apache.sysds.runtime.transform.encode.ColumnEncoder

APPLY_ROW_BLOCKS_PER_COLUMN, BUILD_ROW_BLOCKS_PER_COLUMN

Constructor Summary

Constructors

Constructor	Description
ColumnEncoderDummycode()
ColumnEncoderDummycode(int colID)
ColumnEncoderDummycode(int colID, int domainSize)

Method Summary

Modifier and Type	Method	Description
void	allocateMetaData(FrameBlock meta)	Pre-allocate a FrameBlock for metadata collection.
void	build(CacheBlock<?> in)	Build the transform meta data for the given block input.
boolean	equals(Object o)
List<DependencyTask<?>>	getBuildTasks(CacheBlock<?> in)
int	getDomainSize()
FrameBlock	getMetaData(FrameBlock meta)	Construct a frame block out of the transform meta data.
int	hashCode()
void	initMetaData(FrameBlock meta)	Sets up the required meta data for a subsequent call to apply.
void	mergeAt(ColumnEncoder other)	Merges another encoder, of a compatible type, in after a certain position.
void	readExternal(ObjectInput in)	Redirects the default java serialization via externalizable to our default hadoop writable serialization for efficient broadcast/rdd deserialization.
String	toString()
void	updateDomainSizes(List<ColumnEncoder> columnEncoders)
void	updateIndexRanges(long[] beginDims, long[] endDims, int colOffset)	Update index-ranges to after encoding.
void	writeExternal(ObjectOutput out)	Redirects the default java serialization via externalizable to our default hadoop writable serialization for efficient broadcast/rdd serialization.

Methods inherited from class org.apache.sysds.runtime.transform.encode.ColumnEncoder

apply, apply, build, build, buildPartial, compareTo, getApplyTasks, getBuildTask, getColID, getColMapping, getEstMetaSize, getEstNumDistincts, getPartialBuildTask, getPartialMergeBuildTask, getSparseRowsWZeros, initEmbeddings, isApplicable, isApplicable, prepareBuildPartial, setColID, setEstMetaSize, setEstNumDistincts, shiftCol

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

_domainSize

public int _domainSize

The number of columns outputted from this column group.

Constructor Detail

ColumnEncoderDummycode

public ColumnEncoderDummycode()

ColumnEncoderDummycode

public ColumnEncoderDummycode(int colID)

ColumnEncoderDummycode

public ColumnEncoderDummycode(int colID,
                              int domainSize)

Method Detail

build

public void build(CacheBlock<?> in)

Description copied from interface: Encoder

Build the transform meta data for the given block input. This call modifies and keeps meta data as encoder state.

Parameters:

in - input frame block

getBuildTasks

public List<DependencyTask<?>> getBuildTasks(CacheBlock<?> in)

Overrides:

getBuildTasks in class ColumnEncoder

mergeAt

public void mergeAt(ColumnEncoder other)

Description copied from class: ColumnEncoder

Merges another encoder, of a compatible type, in after a certain position. Resizes as necessary. ColumnEncoders are compatible with themselves and EncoderComposite is compatible with every other ColumnEncoders. MultiColumnEncoders are compatible with every encoder

Overrides:

mergeAt in class ColumnEncoder

Parameters:

other - the encoder that should be merged in

updateIndexRanges

public void updateIndexRanges(long[] beginDims,
                              long[] endDims,
                              int colOffset)

Description copied from class: ColumnEncoder

Update index-ranges to after encoding. Note that only Dummycoding changes the ranges.

Specified by:

updateIndexRanges in interface Encoder

Overrides:

updateIndexRanges in class ColumnEncoder

Parameters:

beginDims - begin dimensions of range

endDims - end dimensions of range

colOffset - is applied to begin and endDims

updateDomainSizes

public void updateDomainSizes(List<ColumnEncoder> columnEncoders)

allocateMetaData

public void allocateMetaData(FrameBlock meta)

Description copied from interface: Encoder

Pre-allocate a FrameBlock for metadata collection.

Parameters:

meta - frame block

getMetaData

public FrameBlock getMetaData(FrameBlock meta)

Description copied from interface: Encoder

Construct a frame block out of the transform meta data.

Parameters:

meta - output frame block

Returns:

output frame block?

initMetaData

public void initMetaData(FrameBlock meta)

Description copied from interface: Encoder

Sets up the required meta data for a subsequent call to apply.

Parameters:

meta - frame block

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Description copied from class: ColumnEncoder

Redirects the default java serialization via externalizable to our default hadoop writable serialization for efficient broadcast/rdd serialization.

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class ColumnEncoder

Parameters:

out - object output

Throws:

IOException - if IOException occurs

readExternal

public void readExternal(ObjectInput in)
                  throws IOException

Description copied from class: ColumnEncoder

Redirects the default java serialization via externalizable to our default hadoop writable serialization for efficient broadcast/rdd deserialization.

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class ColumnEncoder

Parameters:

in - object input

Throws:

IOException - if IOException occur

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getDomainSize

public int getDomainSize()

Overrides:

getDomainSize in class ColumnEncoder

toString

public String toString()

Overrides:

toString in class Object