org.h2.util.geometry

Class EWKTUtils

java.lang.Object

org.h2.util.geometry.EWKTUtils

public final class EWKTUtils
extends java.lang.Object

EWKT format support for GEOMETRY data type.

This class provides limited support of EWKT. EWKT is based on Well-known Text Representation (WKT) from OGC 06-103r4 and includes additional PostGIS extensions. SRID support from EWKT is implemented.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EWKTUtils.EWKTTarget Converter output target that writes a EWKT.

Method Summary

Modifier and Type	Method and Description
static java.lang.String	ewkb2ewkt(byte[] ewkb) Converts EWKB to EWKT.
static java.lang.String	ewkb2ewkt(byte[] ewkb, int dimensionSystem) Converts EWKB to EWKT.
static byte[]	ewkt2ewkb(java.lang.String ewkt) Converts EWKT to EWKB.
static byte[]	ewkt2ewkb(java.lang.String ewkt, int dimensionSystem) Converts EWKT to EWKB.
static java.lang.StringBuilder	formatGeometryTypeAndDimensionSystem(java.lang.StringBuilder builder, int type) Formats type and dimension system as a string.
static int	getDimensionSystem(java.lang.String ewkt) Reads the dimension system from EWKT.
static int	parseDimensionSystem(java.lang.String s) Parses a dimension system from the given string.
static void	parseEWKT(java.lang.String ewkt, GeometryUtils.Target target) Parses a EWKT.
static int	parseGeometryType(java.lang.String s) Parses geometry type and dimension system from the given string.

Methods inherited from class java.lang.Object

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

Method Detail

ewkb2ewkt

public static java.lang.String ewkb2ewkt(byte[] ewkb)

Converts EWKB to EWKT.

Parameters:

ewkb - source EWKB

Returns:

EWKT representation

ewkb2ewkt

public static java.lang.String ewkb2ewkt(byte[] ewkb,
                                         int dimensionSystem)

Converts EWKB to EWKT.

Parameters:

ewkb - source EWKB

dimensionSystem - dimension system

Returns:

EWKT representation

ewkt2ewkb

public static byte[] ewkt2ewkb(java.lang.String ewkt)

Converts EWKT to EWKB.

Parameters:

ewkt - source EWKT

Returns:

EWKB representation

ewkt2ewkb

public static byte[] ewkt2ewkb(java.lang.String ewkt,
                               int dimensionSystem)

Converts EWKT to EWKB.

Parameters:

ewkt - source EWKT

dimensionSystem - dimension system

Returns:

EWKB representation

parseEWKT

public static void parseEWKT(java.lang.String ewkt,
                             GeometryUtils.Target target)

Parses a EWKT.

Parameters:

ewkt - source EWKT

target - output target

parseGeometryType

public static int parseGeometryType(java.lang.String s)

Parses geometry type and dimension system from the given string.

Parameters:

s - string to parse

Returns:

geometry type and dimension system in OGC geometry code format (type + dimensionSystem * 1000)

Throws:

java.lang.IllegalArgumentException - if input is not valid

parseDimensionSystem

public static int parseDimensionSystem(java.lang.String s)

Parses a dimension system from the given string.

Parameters:

s - string to parse

Returns:

dimension system, one of XYZ, XYM, or XYZM

Throws:

java.lang.IllegalArgumentException - if input is not valid

See Also:

GeometryUtils.DIMENSION_SYSTEM_XYZ, GeometryUtils.DIMENSION_SYSTEM_XYM, GeometryUtils.DIMENSION_SYSTEM_XYZM

formatGeometryTypeAndDimensionSystem

public static java.lang.StringBuilder formatGeometryTypeAndDimensionSystem(java.lang.StringBuilder builder,
                                                                           int type)

Formats type and dimension system as a string.

Parameters:

builder - string builder

type - OGC geometry code format (type + dimensionSystem * 1000)

Returns:

the specified string builder

Throws:

java.lang.IllegalArgumentException - if type is not valid

getDimensionSystem

public static int getDimensionSystem(java.lang.String ewkt)

Reads the dimension system from EWKT.

Parameters:

ewkt - EWKT source

Returns:

the dimension system