Module org.apache.lucene.core

Package org.apache.lucene.geo

Class SimpleWKTShapeParser

java.lang.Object

org.apache.lucene.geo.SimpleWKTShapeParser

public class SimpleWKTShapeParser
extends Object

Parses shape geometry represented in WKT format

complies with OGC® document: 12-063r5 and ISO/IEC 13249-3:2016 standard located at http://docs.opengeospatial.org/is/12-063r5/12-063r5.html

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	SimpleWKTShapeParser.ShapeType	Enumerated type for Shapes

Field Summary

Fields

Modifier and Type	Field	Description
static final String	COMMA
static final String	EMPTY
private static final String	EOF
private static final String	EOL
static final String	LPAREN
static final String	NAN
private static final String	NUMBER
static final String	RPAREN
static final String	SPACE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SimpleWKTShapeParser()

Method Summary

Modifier and Type	Method	Description
private static void	checkEOF(StreamTokenizer stream)	next word in the stream
private static boolean	isNumberNext(StreamTokenizer stream)	checks if the next token is a number
private static String	nextCloser(StreamTokenizer stream)	checks if next token is a closing paren
private static String	nextCloserOrComma(StreamTokenizer stream)	expects either a closing LPAREN or comma as the next token
private static String	nextComma(StreamTokenizer stream)	expects a comma as next token
private static String	nextEmptyOrOpen(StreamTokenizer stream)	checks if next token is an EMPTY or open paren
private static double	nextNumber(StreamTokenizer stream)	next number in the stream
private static String	nextOpener(StreamTokenizer stream)	expects an open RPAREN as the next toke
private static String	nextWord(StreamTokenizer stream)	next word in the stream
static Object	parse(String wkt)
private static Rectangle	parseBBox(StreamTokenizer stream)	parses an ENVELOPE
private static void	parseCoordinate(StreamTokenizer stream, ArrayList<Double> lats, ArrayList<Double> lons)	parses a single coordinate, w/ optional 3rd dimension
private static void	parseCoordinates(StreamTokenizer stream, ArrayList<Double> lats, ArrayList<Double> lons)	Parses a list of points into latitude and longitude arraylists
static Object	parseExpectedType(String wkt, SimpleWKTShapeParser.ShapeType shapeType)
private static Object	parseGeometry(StreamTokenizer stream, SimpleWKTShapeParser.ShapeType shapeType)	parse geometry from the stream tokenizer
private static Object[]	parseGeometryCollection(StreamTokenizer stream)	parses a GEOMETRYCOLLECTION
private static Line	parseLine(StreamTokenizer stream)	parses a LINESTRING
private static Line[]	parseMultiLine(StreamTokenizer stream)	parses a MULTILINESTRING
private static double[][]	parseMultiPoint(StreamTokenizer stream)	parses a MULTIPOINT type
private static Polygon[]	parseMultiPolygon(StreamTokenizer stream)	parses a MULTIPOLYGON
private static double[]	parsePoint(StreamTokenizer stream)	Parses a point as a double array
private static Polygon	parsePolygon(StreamTokenizer stream)	parses a POLYGON
private static Polygon	parsePolygonHole(StreamTokenizer stream)	parses the hole of a polygon
private static String	tokenString(StreamTokenizer stream)	next token in the stream

Methods inherited from class java.lang.Object

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

Field Details

EMPTY

public static final String EMPTY

See Also:

• Constant Field Values

SPACE

public static final String SPACE

See Also:

• Constant Field Values

LPAREN

public static final String LPAREN

See Also:

• Constant Field Values

RPAREN

public static final String RPAREN

See Also:

• Constant Field Values

COMMA

public static final String COMMA

See Also:

• Constant Field Values

NAN

public static final String NAN

See Also:

• Constant Field Values

NUMBER

private static final String NUMBER

See Also:

• Constant Field Values

EOF

private static final String EOF

See Also:

• Constant Field Values

EOL

private static final String EOL

See Also:

• Constant Field Values

Constructor Details

SimpleWKTShapeParser

private SimpleWKTShapeParser()

Method Details

parse

public static Object parse(String wkt)
                    throws IOException,
ParseException

Throws:

IOException

ParseException

parseExpectedType

public static Object parseExpectedType(String wkt,
 SimpleWKTShapeParser.ShapeType shapeType)
                                throws IOException,
ParseException

Throws:

IOException

ParseException

parseGeometry

private static Object parseGeometry(StreamTokenizer stream,
 SimpleWKTShapeParser.ShapeType shapeType)
                             throws IOException,
ParseException

parse geometry from the stream tokenizer

Throws:

IOException

ParseException

parsePoint

private static double[] parsePoint(StreamTokenizer stream)
                            throws IOException,
ParseException

Parses a point as a double array

Throws:

IOException

ParseException

parseCoordinates

private static void parseCoordinates(StreamTokenizer stream,
 ArrayList<Double> lats,
 ArrayList<Double> lons)
                              throws IOException,
ParseException

Parses a list of points into latitude and longitude arraylists

Throws:

IOException

ParseException

parseCoordinate

private static void parseCoordinate(StreamTokenizer stream,
 ArrayList<Double> lats,
 ArrayList<Double> lons)
                             throws IOException,
ParseException

parses a single coordinate, w/ optional 3rd dimension

Throws:

IOException

ParseException

parseMultiPoint

private static double[][] parseMultiPoint(StreamTokenizer stream)
                                   throws IOException,
ParseException

parses a MULTIPOINT type

Throws:

IOException

ParseException

parseLine

private static Line parseLine(StreamTokenizer stream)
                       throws IOException,
ParseException

parses a LINESTRING

Throws:

IOException

ParseException

parseMultiLine

private static Line[] parseMultiLine(StreamTokenizer stream)
                              throws IOException,
ParseException

parses a MULTILINESTRING

Throws:

IOException

ParseException

parsePolygonHole

private static Polygon parsePolygonHole(StreamTokenizer stream)
                                 throws IOException,
ParseException

parses the hole of a polygon

Throws:

IOException

ParseException

parsePolygon

private static Polygon parsePolygon(StreamTokenizer stream)
                             throws IOException,
ParseException

parses a POLYGON

Throws:

IOException

ParseException

parseMultiPolygon

private static Polygon[] parseMultiPolygon(StreamTokenizer stream)
                                    throws IOException,
ParseException

parses a MULTIPOLYGON

Throws:

IOException

ParseException

parseBBox

private static Rectangle parseBBox(StreamTokenizer stream)
                            throws IOException,
ParseException

parses an ENVELOPE

Throws:

IOException

ParseException

parseGeometryCollection

private static Object[] parseGeometryCollection(StreamTokenizer stream)
                                         throws IOException,
ParseException

parses a GEOMETRYCOLLECTION

Throws:

IOException

ParseException

nextWord

private static String nextWord(StreamTokenizer stream)
                        throws ParseException,
IOException

next word in the stream

Throws:

ParseException

IOException

nextNumber

private static double nextNumber(StreamTokenizer stream)
                          throws IOException,
ParseException

next number in the stream

Throws:

IOException

ParseException

tokenString

private static String tokenString(StreamTokenizer stream)

next token in the stream

isNumberNext

private static boolean isNumberNext(StreamTokenizer stream)
                             throws IOException

checks if the next token is a number

Throws:

IOException

nextEmptyOrOpen

private static String nextEmptyOrOpen(StreamTokenizer stream)
                               throws IOException,
ParseException

checks if next token is an EMPTY or open paren

Throws:

IOException

ParseException

nextCloser

private static String nextCloser(StreamTokenizer stream)
                          throws IOException,
ParseException

checks if next token is a closing paren

Throws:

IOException

ParseException

nextComma

private static String nextComma(StreamTokenizer stream)
                         throws IOException,
ParseException

expects a comma as next token

Throws:

IOException

ParseException

nextOpener

private static String nextOpener(StreamTokenizer stream)
                          throws IOException,
ParseException

expects an open RPAREN as the next toke

Throws:

IOException

ParseException

nextCloserOrComma

private static String nextCloserOrComma(StreamTokenizer stream)
                                 throws IOException,
ParseException

expects either a closing LPAREN or comma as the next token

Throws:

IOException

ParseException

checkEOF

private static void checkEOF(StreamTokenizer stream)
                      throws ParseException,
IOException

next word in the stream

Throws:

ParseException

IOException