org.gvsig.fmap.geom.jts.operation.fromwkb

Class PostGISEWKBParser

java.lang.Object

org.gvsig.fmap.geom.jts.operation.fromwkb.PostGISEWKBParser

public class PostGISEWKBParser
extends Object

Parse binary representation of geometries. Currently, only text rep (hexed) implementation is tested. It should be easy to add char[] and CharSequence ByteGetter instances, although the latter one is not compatible with older jdks. I did not implement real unsigned 32-bit integers or emulate them with long, as both java Arrays and Strings currently can have only 2^31-1 elements (bytes), so we cannot even get or build Geometries with more than approx. 2^28 coordinates (8 bytes each).

Constructor Summary

Constructors

Constructor and Description
PostGISEWKBParser()

Method Summary

Modifier and Type	Method and Description
Geometry	parse(byte[] value) Parse a binary encoded geometry.
protected Geometry	parseGeometry(ByteBuffer data) Parse a geometry starting at offset.
protected int	parseTypeAndSRID(ByteBuffer data)

Methods inherited from class java.lang.Object

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

Constructor Detail

PostGISEWKBParser

public PostGISEWKBParser()

Method Detail

parse

public Geometry parse(byte[] value)
               throws CreateGeometryException

Parse a binary encoded geometry. Is synchronized to protect offset counter. (Unfortunately, Java does not have neither call by reference nor multiple return values.)

Parameters:

value -

Returns:

Throws:

CreateGeometryException

parseGeometry

protected Geometry parseGeometry(ByteBuffer data)
                          throws CreateGeometryException

Parse a geometry starting at offset.

Parameters:

data -

Returns:

Throws:

CreateGeometryException

parseTypeAndSRID

protected int parseTypeAndSRID(ByteBuffer data)