org.teiid.geo

Class GeometryTransformUtils

java.lang.Object

org.teiid.geo.GeometryTransformUtils

public class GeometryTransformUtils
extends Object

Wrapper around proj4j library to transform geometries to different coordinate systems (ST_Transform).

Constructor Summary

Constructors

Constructor and Description
GeometryTransformUtils()

Method Summary

Modifier and Type	Method and Description
protected static org.osgeo.proj4j.ProjCoordinate[]	convert(org.locationtech.jts.geom.Coordinate[] jtsCoords) Convert JTS coordinates to proj4j coordinates.
protected static org.locationtech.jts.geom.Coordinate[]	convert(org.osgeo.proj4j.ProjCoordinate[] projCoords) Convert proj4 coordinates to JTS coordinates.
static boolean	isLatLong(CommandContext ctx, int srid)
static String	lookupProj4Text(CommandContext ctx, int srid) Lookup proj4 parameters in SPATIAL_REF_SYS using SRID as key.
static GeometryType	transform(CommandContext ctx, GeometryType geom, int srid) Convert geometry to a different coordinate system.
static org.locationtech.jts.geom.Geometry	transform(org.locationtech.jts.geom.Geometry geom, String srcParams, String tgtParams) Convert geometry to different coordinate system given the source/target proj4 parameters.
protected static org.locationtech.jts.geom.Coordinate[]	transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.Coordinate[] in)
protected static org.osgeo.proj4j.ProjCoordinate[]	transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct, org.osgeo.proj4j.ProjCoordinate[] in)
protected static org.locationtech.jts.geom.Geometry	transformGeometry(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.Geometry geom)
protected static org.locationtech.jts.geom.Geometry	transformGeometryCollection(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.GeometryCollection geometryCollection)
protected static org.locationtech.jts.geom.Geometry	transformLinearRing(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.LinearRing linearRing)
protected static org.locationtech.jts.geom.Geometry	transformLineString(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.LineString lineString)
protected static org.locationtech.jts.geom.Geometry	transformMultiLineString(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.MultiLineString multiLineString)
protected static org.locationtech.jts.geom.Geometry	transformMultiPoint(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.MultiPoint multiPoint)
protected static org.locationtech.jts.geom.Geometry	transformMultiPolygon(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.MultiPolygon multiPolygon)
protected static org.locationtech.jts.geom.Geometry	transformPoint(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.Point point)
protected static org.locationtech.jts.geom.Polygon	transformPolygon(org.osgeo.proj4j.CoordinateTransform ct, org.locationtech.jts.geom.Polygon polygon)

Methods inherited from class java.lang.Object

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

Constructor Detail

GeometryTransformUtils

public GeometryTransformUtils()

Method Detail

transform

@TeiidFunction(name="st_transform",
               category="Geometry",
               nullOnNull=true,
               pushdown=CAN_PUSHDOWN)
public static GeometryType transform(CommandContext ctx,
                                                                                                                                                                                   GeometryType geom,
                                                                                                                                                                                   int srid)
                                                                                                                                                                            throws FunctionExecutionException

Convert geometry to a different coordinate system. Geometry must have valid SRID.

Parameters:

ctx - Command context used to lookup proj4 parameters from table.

geom - Geometry to transform.

srid - Target SRID; must exist in SPATIAL_REF_SYS table.

Returns:

Reprojected geometry.

Throws:

FunctionExecutionException

lookupProj4Text

public static String lookupProj4Text(CommandContext ctx,
                                     int srid)
                              throws FunctionExecutionException

Lookup proj4 parameters in SPATIAL_REF_SYS using SRID as key.

Parameters:

ctx -

srid -

Returns:

Throws:

FunctionExecutionException

isLatLong

public static boolean isLatLong(CommandContext ctx,
                                int srid)
                         throws FunctionExecutionException

Throws:

FunctionExecutionException

transform

public static org.locationtech.jts.geom.Geometry transform(org.locationtech.jts.geom.Geometry geom,
                                                           String srcParams,
                                                           String tgtParams)
                                                    throws FunctionExecutionException

Convert geometry to different coordinate system given the source/target proj4 parameters. Presumably these were pulled from SPATIAL_REF_SYS.

Parameters:

geom -

srcParams -

tgtParams -

Returns:

Throws:

FunctionExecutionException

transformGeometry

protected static org.locationtech.jts.geom.Geometry transformGeometry(org.osgeo.proj4j.CoordinateTransform ct,
                                                                      org.locationtech.jts.geom.Geometry geom)
                                                               throws FunctionExecutionException

Throws:

FunctionExecutionException

convert

protected static org.locationtech.jts.geom.Coordinate[] convert(org.osgeo.proj4j.ProjCoordinate[] projCoords)

Convert proj4 coordinates to JTS coordinates.

Parameters:

projCoords -

Returns:

convert

protected static org.osgeo.proj4j.ProjCoordinate[] convert(org.locationtech.jts.geom.Coordinate[] jtsCoords)

Convert JTS coordinates to proj4j coordinates.

Parameters:

jtsCoords -

Returns:

transformCoordinates

protected static org.locationtech.jts.geom.Coordinate[] transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct,
                                                                             org.locationtech.jts.geom.Coordinate[] in)

transformCoordinates

protected static org.osgeo.proj4j.ProjCoordinate[] transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct,
                                                                        org.osgeo.proj4j.ProjCoordinate[] in)

transformPolygon

protected static org.locationtech.jts.geom.Polygon transformPolygon(org.osgeo.proj4j.CoordinateTransform ct,
                                                                    org.locationtech.jts.geom.Polygon polygon)

transformPoint

protected static org.locationtech.jts.geom.Geometry transformPoint(org.osgeo.proj4j.CoordinateTransform ct,
                                                                   org.locationtech.jts.geom.Point point)

transformLinearRing

protected static org.locationtech.jts.geom.Geometry transformLinearRing(org.osgeo.proj4j.CoordinateTransform ct,
                                                                        org.locationtech.jts.geom.LinearRing linearRing)

transformLineString

protected static org.locationtech.jts.geom.Geometry transformLineString(org.osgeo.proj4j.CoordinateTransform ct,
                                                                        org.locationtech.jts.geom.LineString lineString)

transformMultiPolygon

protected static org.locationtech.jts.geom.Geometry transformMultiPolygon(org.osgeo.proj4j.CoordinateTransform ct,
                                                                          org.locationtech.jts.geom.MultiPolygon multiPolygon)

transformMultiPoint

protected static org.locationtech.jts.geom.Geometry transformMultiPoint(org.osgeo.proj4j.CoordinateTransform ct,
                                                                        org.locationtech.jts.geom.MultiPoint multiPoint)

transformMultiLineString

protected static org.locationtech.jts.geom.Geometry transformMultiLineString(org.osgeo.proj4j.CoordinateTransform ct,
                                                                             org.locationtech.jts.geom.MultiLineString multiLineString)

transformGeometryCollection

protected static org.locationtech.jts.geom.Geometry transformGeometryCollection(org.osgeo.proj4j.CoordinateTransform ct,
                                                                                org.locationtech.jts.geom.GeometryCollection geometryCollection)
                                                                         throws FunctionExecutionException

Throws:

FunctionExecutionException