org.teiid.query.function

Class GeometryTransformUtils

java.lang.Object

org.teiid.query.function.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(com.vividsolutions.jts.geom.Coordinate[] jtsCoords) Convert JTS coordinates to proj4j coordinates.
protected static com.vividsolutions.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 com.vividsolutions.jts.geom.Geometry	transform(com.vividsolutions.jts.geom.Geometry geom, String srcParams, String tgtParams) Convert geometry to different coordinate system given the source/target proj4 parameters.
protected static com.vividsolutions.jts.geom.Coordinate[]	transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.Coordinate[] in)
protected static org.osgeo.proj4j.ProjCoordinate[]	transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct, org.osgeo.proj4j.ProjCoordinate[] in)
protected static com.vividsolutions.jts.geom.Geometry	transformGeometry(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.Geometry geom)
protected static com.vividsolutions.jts.geom.Geometry	transformGeometryCollection(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.GeometryCollection geometryCollection)
protected static com.vividsolutions.jts.geom.Geometry	transformLinearRing(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.LinearRing linearRing)
protected static com.vividsolutions.jts.geom.Geometry	transformLineString(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.LineString lineString)
protected static com.vividsolutions.jts.geom.Geometry	transformMultiLineString(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.MultiLineString multiLineString)
protected static com.vividsolutions.jts.geom.Geometry	transformMultiPoint(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.MultiPoint multiPoint)
protected static com.vividsolutions.jts.geom.Geometry	transformMultiPolygon(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.MultiPolygon multiPolygon)
protected static com.vividsolutions.jts.geom.Geometry	transformPoint(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.jts.geom.Point point)
protected static com.vividsolutions.jts.geom.Polygon	transformPolygon(org.osgeo.proj4j.CoordinateTransform ct, com.vividsolutions.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

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 com.vividsolutions.jts.geom.Geometry transform(com.vividsolutions.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 com.vividsolutions.jts.geom.Geometry transformGeometry(org.osgeo.proj4j.CoordinateTransform ct,
                                                                        com.vividsolutions.jts.geom.Geometry geom)
                                                                 throws FunctionExecutionException

Throws:

FunctionExecutionException

convert

protected static com.vividsolutions.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(com.vividsolutions.jts.geom.Coordinate[] jtsCoords)

Convert JTS coordinates to proj4j coordinates.

Parameters:

jtsCoords -

Returns:

transformCoordinates

protected static com.vividsolutions.jts.geom.Coordinate[] transformCoordinates(org.osgeo.proj4j.CoordinateTransform ct,
                                                                               com.vividsolutions.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 com.vividsolutions.jts.geom.Polygon transformPolygon(org.osgeo.proj4j.CoordinateTransform ct,
                                                                      com.vividsolutions.jts.geom.Polygon polygon)

transformPoint

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

transformLinearRing

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

transformLineString

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

transformMultiPolygon

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

transformMultiPoint

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

transformMultiLineString

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

transformGeometryCollection

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

Throws:

FunctionExecutionException