de.lmu.ifi.dbs.elki.datasource.parser

Class SimplePolygonParser

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.parser.AbstractStreamingParser

de.lmu.ifi.dbs.elki.datasource.parser.SimplePolygonParser

All Implemented Interfaces:

BundleStreamSource, Parser, StreamingParser

public class SimplePolygonParser
extends AbstractStreamingParser

Parser to load polygon data (2D and 3D only) from a simple format. One record per line, points separated by whitespace, numbers separated by colons. Multiple polygons components can be separated using --.

Unparseable parts will be treated as labels.

Since:

0.4.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SimplePolygonParser.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
static java.util.regex.Pattern	COORD Pattern to catch coordinates
private java.util.List<double[]>	coords (Reused) storage of coordinates.
protected ExternalID	cureid Current external id.
protected LabelList	curlbl Current labels.
protected PolygonsObject	curpoly Current polygon.
protected boolean	haslabels Whether or not the data set has labels.
private java.util.ArrayList<java.lang.String>	labels (Reused) store for labels.
private static Logging	LOG Class logger
protected BundleMeta	meta Metadata.
(package private) BundleStreamSource.Event	nextevent Event to report next.
static java.lang.String	POLYGON_SEPARATOR Polygon separator
private java.util.List<Polygon>	polys (Reused) storage of polygons.

Fields inherited from class de.lmu.ifi.dbs.elki.datasource.parser.AbstractStreamingParser

reader, tokenizer

Constructor Summary

Constructors

Constructor and Description
SimplePolygonParser(CSVReaderFormat format) Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	buildMeta() Update the meta element.
java.lang.Object	data(int rnum) Access a particular object and representation.
protected Logging	getLogger() Get the logger for this class.
BundleMeta	getMeta() Get the current meta data.
BundleStreamSource.Event	nextEvent() Get the next event
private boolean	parseLine() Parse a single line.

Methods inherited from class de.lmu.ifi.dbs.elki.datasource.parser.AbstractStreamingParser

asMultipleObjectsBundle, assignDBID, cleanup, hasDBIDs, initStream, parse

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logging LOG

Class logger

COORD

public static final java.util.regex.Pattern COORD

Pattern to catch coordinates

POLYGON_SEPARATOR

public static final java.lang.String POLYGON_SEPARATOR

Polygon separator

See Also:

Constant Field Values

nextevent

BundleStreamSource.Event nextevent

Event to report next.

meta

protected BundleMeta meta

Metadata.

haslabels

protected boolean haslabels

Whether or not the data set has labels.

curpoly

protected PolygonsObject curpoly

Current polygon.

curlbl

protected LabelList curlbl

Current labels.

cureid

protected ExternalID cureid

Current external id.

coords

private final java.util.List<double[]> coords

(Reused) storage of coordinates.

polys

private final java.util.List<Polygon> polys

(Reused) storage of polygons.

labels

private final java.util.ArrayList<java.lang.String> labels

(Reused) store for labels.

Constructor Detail

SimplePolygonParser

public SimplePolygonParser(CSVReaderFormat format)

Constructor.

Parameters:

format - Input format

Method Detail

nextEvent

public BundleStreamSource.Event nextEvent()

Description copied from interface: BundleStreamSource

Get the next event

Returns:

Event type

buildMeta

protected void buildMeta()

Update the meta element.

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

parseLine

private boolean parseLine()

Parse a single line.

Returns:

true if the line was read successful.

getLogger

protected Logging getLogger()

Description copied from class: AbstractStreamingParser

Get the logger for this class.

Specified by:

getLogger in class AbstractStreamingParser

Returns:

Logger.