Package elki.datasource.filter

Class AbstractStreamConversionFilter<I,O>

java.lang.Object

elki.datasource.filter.AbstractStreamFilter

elki.datasource.filter.AbstractStreamConversionFilter<I,O>

Type Parameters:

I - Input object type

O - Input object type

All Implemented Interfaces:

BundleStreamSource, ObjectFilter, StreamFilter

Direct Known Subclasses:

AbstractVectorStreamConversionFilter, LatLngToECEFFilter, LngLatToECEFFilter, MultivariateTimeSeriesFilter, ProjectionFilter

public abstract class AbstractStreamConversionFilter<I,O>
extends AbstractStreamFilter

Abstract base class for simple conversion filters such as normalizations and projections.

Since:

0.5.0

Author:

Erich Schubert

Nested Class Summary

Nested classes/interfaces inherited from interface elki.datasource.bundle.BundleStreamSource

BundleStreamSource.Event

Field Summary

Fields

Modifier and Type	Field	Description
(package private) int	column	The column to filter.
(package private) BundleMeta	meta	The filtered meta.

Fields inherited from class elki.datasource.filter.AbstractStreamFilter

source

Constructor Summary

Constructors

Constructor	Description
AbstractStreamConversionFilter()

Method Summary

Modifier and Type	Method	Description
protected abstract SimpleTypeInformation<? super O>	convertedType(SimpleTypeInformation<I> in)	Get the output type from the input type after conversion.
java.lang.Object	data(int rnum)	Access a particular object and representation.
protected abstract O	filterSingleObject(I obj)	Normalize a single instance.
protected abstract TypeInformation	getInputTypeRestriction()	Get the input type restriction used for negotiating the data query.
BundleMeta	getMeta()	Get the current meta data.
BundleStreamSource.Event	nextEvent()	Get the next event

Methods inherited from class elki.datasource.filter.AbstractStreamFilter

asMultipleObjectsBundle, assignDBID, filter, hasDBIDs, init, toString

Methods inherited from class java.lang.Object

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

Field Detail

meta

BundleMeta meta

The filtered meta.

column

int column

The column to filter.

Constructor Detail

AbstractStreamConversionFilter

public AbstractStreamConversionFilter()

Method Detail

getMeta

public BundleMeta getMeta()

Description copied from interface: BundleStreamSource

Get the current meta data.

Returns:

Metadata

data

public java.lang.Object data(int rnum)

Description copied from interface: BundleStreamSource

Access a particular object and representation.

Parameters:

rnum - Representation number

Returns:

Contained data

nextEvent

public BundleStreamSource.Event nextEvent()

Description copied from interface: BundleStreamSource

Get the next event

Returns:

Event type

filterSingleObject

protected abstract O filterSingleObject(I obj)

Normalize a single instance. You can implement this as UnsupportedOperationException if you override both public "normalize" functions!

Parameters:

obj - Database object to normalize

Returns:

Normalized database object

getInputTypeRestriction

protected abstract TypeInformation getInputTypeRestriction()

Get the input type restriction used for negotiating the data query.

Returns:

Type restriction

convertedType

protected abstract SimpleTypeInformation<? super O> convertedType(SimpleTypeInformation<I> in)

Get the output type from the input type after conversion.

Parameters:

in - input type restriction

Returns:

output type restriction