net.postgis.jdbc.geometry.binary

Class BinaryParser

java.lang.Object

net.postgis.jdbc.geometry.binary.BinaryParser

public class BinaryParser
extends Object

Parse binary representation of geometries. 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).

Author:

Markus Schaber <markus.schaber@logix-tt.com>

Constructor Summary

Constructors

Constructor and Description
BinaryParser()

Method Summary

Modifier and Type	Method and Description
Geometry	parse(byte[] value) Parse a binary encoded geometry.
Geometry	parse(String value) Parse a hex encoded geometry Is synchronized to protect offset counter.
protected Geometry	parseGeometry(ValueGetter data) Parse a geometry starting at offset.
static ValueGetter	valueGetterForEndian(ByteGetter bytes) Get the appropriate ValueGetter for my endianness

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryParser

public BinaryParser()

Method Detail

valueGetterForEndian

public static ValueGetter valueGetterForEndian(ByteGetter bytes)

Get the appropriate ValueGetter for my endianness

Parameters:

bytes - The appropriate Byte Getter

Returns:

the ValueGetter

parse

public Geometry parse(String value)

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

Parameters:

value - String containing the data to be parsed

Returns:

resulting geometry for the parsed data

parse

public Geometry parse(byte[] value)

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 - byte array containing the data to be parsed

Returns:

resulting geometry for the parsed data

parseGeometry

protected Geometry parseGeometry(ValueGetter data)

Parse a geometry starting at offset.

Parameters:

data - ValueGetter with the data to be parsed

Returns:

the parsed geometry