Package org.apache.lucene.geo

Class SimpleWKTShapeParser

java.lang.Object

org.apache.lucene.geo.SimpleWKTShapeParser

public class SimpleWKTShapeParser
extends java.lang.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 class	SimpleWKTShapeParser.ShapeType	Enumerated type for Shapes

Field Summary

Fields

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

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SimpleWKTShapeParser()

Method Summary

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

EMPTY

public static final java.lang.String EMPTY

See Also:

Constant Field Values

SPACE

public static final java.lang.String SPACE

See Also:

Constant Field Values

LPAREN

public static final java.lang.String LPAREN

See Also:

Constant Field Values

RPAREN

public static final java.lang.String RPAREN

See Also:

Constant Field Values

COMMA

public static final java.lang.String COMMA

See Also:

Constant Field Values

NAN

public static final java.lang.String NAN

See Also:

Constant Field Values

NUMBER

private static final java.lang.String NUMBER

See Also:

Constant Field Values

EOF

private static final java.lang.String EOF

See Also:

Constant Field Values

EOL

private static final java.lang.String EOL

See Also:

Constant Field Values

Constructor Detail

SimpleWKTShapeParser

private SimpleWKTShapeParser()

Method Detail

parse

public static java.lang.Object parse(java.lang.String wkt)
                              throws java.io.IOException,
                                     java.text.ParseException

Throws:

java.io.IOException

java.text.ParseException

parseExpectedType

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

Throws:

java.io.IOException

java.text.ParseException

parseGeometry

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

parse geometry from the stream tokenizer

Throws:

java.io.IOException

java.text.ParseException

parsePoint

private static double[] parsePoint(java.io.StreamTokenizer stream)
                            throws java.io.IOException,
                                   java.text.ParseException

Parses a point as a double array

Throws:

java.io.IOException

java.text.ParseException

parseCoordinates

private static void parseCoordinates(java.io.StreamTokenizer stream,
                                     java.util.ArrayList<java.lang.Double> lats,
                                     java.util.ArrayList<java.lang.Double> lons)
                              throws java.io.IOException,
                                     java.text.ParseException

Parses a list of points into latitude and longitude arraylists

Throws:

java.io.IOException

java.text.ParseException

parseCoordinate

private static void parseCoordinate(java.io.StreamTokenizer stream,
                                    java.util.ArrayList<java.lang.Double> lats,
                                    java.util.ArrayList<java.lang.Double> lons)
                             throws java.io.IOException,
                                    java.text.ParseException

parses a single coordinate, w/ optional 3rd dimension

Throws:

java.io.IOException

java.text.ParseException

parseMultiPoint

private static double[][] parseMultiPoint(java.io.StreamTokenizer stream)
                                   throws java.io.IOException,
                                          java.text.ParseException

parses a MULTIPOINT type

Throws:

java.io.IOException

java.text.ParseException

parseLine

private static Line parseLine(java.io.StreamTokenizer stream)
                       throws java.io.IOException,
                              java.text.ParseException

parses a LINESTRING

Throws:

java.io.IOException

java.text.ParseException

parseMultiLine

private static Line[] parseMultiLine(java.io.StreamTokenizer stream)
                              throws java.io.IOException,
                                     java.text.ParseException

parses a MULTILINESTRING

Throws:

java.io.IOException

java.text.ParseException

parsePolygonHole

private static Polygon parsePolygonHole(java.io.StreamTokenizer stream)
                                 throws java.io.IOException,
                                        java.text.ParseException

parses the hole of a polygon

Throws:

java.io.IOException

java.text.ParseException

parsePolygon

private static Polygon parsePolygon(java.io.StreamTokenizer stream)
                             throws java.io.IOException,
                                    java.text.ParseException

parses a POLYGON

Throws:

java.io.IOException

java.text.ParseException

parseMultiPolygon

private static Polygon[] parseMultiPolygon(java.io.StreamTokenizer stream)
                                    throws java.io.IOException,
                                           java.text.ParseException

parses a MULTIPOLYGON

Throws:

java.io.IOException

java.text.ParseException

parseBBox

private static Rectangle parseBBox(java.io.StreamTokenizer stream)
                            throws java.io.IOException,
                                   java.text.ParseException

parses an ENVELOPE

Throws:

java.io.IOException

java.text.ParseException

parseGeometryCollection

private static java.lang.Object[] parseGeometryCollection(java.io.StreamTokenizer stream)
                                                   throws java.io.IOException,
                                                          java.text.ParseException

parses a GEOMETRYCOLLECTION

Throws:

java.io.IOException

java.text.ParseException

nextWord

private static java.lang.String nextWord(java.io.StreamTokenizer stream)
                                  throws java.text.ParseException,
                                         java.io.IOException

next word in the stream

Throws:

java.text.ParseException

java.io.IOException

nextNumber

private static double nextNumber(java.io.StreamTokenizer stream)
                          throws java.io.IOException,
                                 java.text.ParseException

next number in the stream

Throws:

java.io.IOException

java.text.ParseException

tokenString

private static java.lang.String tokenString(java.io.StreamTokenizer stream)

next token in the stream

isNumberNext

private static boolean isNumberNext(java.io.StreamTokenizer stream)
                             throws java.io.IOException

checks if the next token is a number

Throws:

java.io.IOException

nextEmptyOrOpen

private static java.lang.String nextEmptyOrOpen(java.io.StreamTokenizer stream)
                                         throws java.io.IOException,
                                                java.text.ParseException

checks if next token is an EMPTY or open paren

Throws:

java.io.IOException

java.text.ParseException

nextCloser

private static java.lang.String nextCloser(java.io.StreamTokenizer stream)
                                    throws java.io.IOException,
                                           java.text.ParseException

checks if next token is a closing paren

Throws:

java.io.IOException

java.text.ParseException

nextComma

private static java.lang.String nextComma(java.io.StreamTokenizer stream)
                                   throws java.io.IOException,
                                          java.text.ParseException

expects a comma as next token

Throws:

java.io.IOException

java.text.ParseException

nextOpener

private static java.lang.String nextOpener(java.io.StreamTokenizer stream)
                                    throws java.io.IOException,
                                           java.text.ParseException

expects an open RPAREN as the next toke

Throws:

java.io.IOException

java.text.ParseException

nextCloserOrComma

private static java.lang.String nextCloserOrComma(java.io.StreamTokenizer stream)
                                           throws java.io.IOException,
                                                  java.text.ParseException

expects either a closing LPAREN or comma as the next token

Throws:

java.io.IOException

java.text.ParseException

checkEOF

private static void checkEOF(java.io.StreamTokenizer stream)
                      throws java.text.ParseException,
                             java.io.IOException

next word in the stream

Throws:

java.text.ParseException

java.io.IOException