de.lmu.ifi.dbs.elki.datasource.filter.selection

Class FirstNStreamFilter

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.filter.AbstractStreamFilter

de.lmu.ifi.dbs.elki.datasource.filter.selection.FirstNStreamFilter

All Implemented Interfaces:

BundleStreamSource, ObjectFilter, StreamFilter

public class FirstNStreamFilter
extends AbstractStreamFilter

Keep only the first N elements of the data source.

Since:

0.7.5

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FirstNStreamFilter.Parameterizer Parameterization class

Nested classes/interfaces inherited from interface de.lmu.ifi.dbs.elki.datasource.bundle.BundleStreamSource

BundleStreamSource.Event

Field Summary

Fields

Modifier and Type	Field and Description
protected int	n Remaining entries to keep

Fields inherited from class de.lmu.ifi.dbs.elki.datasource.filter.AbstractStreamFilter

source

Constructor Summary

Constructors

Constructor and Description
FirstNStreamFilter(int n) Constructor.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	data(int rnum) Access a particular object and representation.
BundleMeta	getMeta() Get the current meta data.
BundleStreamSource.Event	nextEvent() Get the next event

Methods inherited from class de.lmu.ifi.dbs.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

n

protected int n

Remaining entries to keep

Constructor Detail

FirstNStreamFilter

public FirstNStreamFilter(int n)

Constructor.

Parameters:

n - number of entries to keep

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