Package com.databricks.jdbc.api.impl.converters

Class WKTConverter

java.lang.Object

com.databricks.jdbc.api.impl.converters.WKTConverter

public class WKTConverter
extends Object

Utility class for converting between WKT (Well-Known Text) and WKB (Well-Known Binary) formats.

This class uses the JTS (Java Topology Suite) library to provide robust WKT/WKB conversion functionality for geospatial data. JTS is a widely-used, well-tested library that implements the OpenGIS Consortium's Simple Features Specification for SQL.

Constructor Summary

Constructors

Constructor	Description
WKTConverter()

Method Summary

Modifier and Type	Method	Description
static int	extractSRIDFromEWKT(String ewkt)	Extracts the SRID from an EWKT (Extended Well-Known Text) string.
static String	removeSRIDFromEWKT(String ewkt)	Removes the SRID prefix from an EWKT string to get clean WKT.
static byte[]	toWKB(String wkt)	Converts WKT (Well-Known Text) to WKB (Well-Known Binary) format.
static String	toWKT(byte[] wkb)	Converts WKB (Well-Known Binary) to WKT (Well-Known Text) format.

Methods inherited from class java.lang.Object

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

Constructor Detail

WKTConverter

public WKTConverter()

Method Detail

toWKB

public static byte[] toWKB(String wkt)
                    throws DatabricksValidationException

Converts WKT (Well-Known Text) to WKB (Well-Known Binary) format.

This implementation uses the JTS library to parse the WKT string into a Geometry object and then converts it to WKB format. This provides robust, standards-compliant conversion.

Parameters:

wkt - the WKT string to convert

Returns:

the WKB representation as a byte array

Throws:

DatabricksValidationException - if the WKT is invalid

toWKT

public static String toWKT(byte[] wkb)
                    throws DatabricksValidationException

Converts WKB (Well-Known Binary) to WKT (Well-Known Text) format.

This implementation uses the JTS library to parse the WKB bytes into a Geometry object and then converts it to WKT format.

Parameters:

wkb - the WKB bytes to convert

Returns:

the WKT representation as a string

Throws:

DatabricksValidationException - if the WKB is invalid

extractSRIDFromEWKT

public static int extractSRIDFromEWKT(String ewkt)

Extracts the SRID from an EWKT (Extended Well-Known Text) string.

EWKT format includes SRID prefix: "SRID=4326;POINT(1 2)"

Parameters:

ewkt - the EWKT string

Returns:

the SRID value, or 0 if no SRID is specified

removeSRIDFromEWKT

public static String removeSRIDFromEWKT(String ewkt)

Removes the SRID prefix from an EWKT string to get clean WKT.

Converts "SRID=4326;POINT(1 2)" to "POINT(1 2)"

Parameters:

ewkt - the EWKT string

Returns:

the clean WKT string without SRID prefix