org.geotools.data.shapefile.shp

Class PolygonHandler

Object

PolygonHandler

All Implemented Interfaces:

ShapeHandler

public class PolygonHandler
extends Object
implements ShapeHandler

Wrapper for a Shapefile polygon.

Author:

aaime, Ian Schneider

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	LOGGER

Constructor Summary

Constructors

Constructor and Description
PolygonHandler(GeometryFactory gf)
PolygonHandler(ShapeType type, GeometryFactory gf)

Method Summary

Modifier and Type	Method and Description
int	getLength(Object geometry) Get the length of the given geometry Object in bytes not 16-bit words.
ShapeType	getShapeType() Get the ShapeType of this handler.
Object	read(ByteBuffer buffer, ShapeType type, boolean flatFeature) Read a geometry from the ByteBuffer.
void	write(ByteBuffer buffer, Object geometry) Write the geometry into the ByteBuffer.

Methods inherited from class Object

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

Field Detail

LOGGER

protected static final Logger LOGGER

Constructor Detail

PolygonHandler

public PolygonHandler(GeometryFactory gf)

PolygonHandler

public PolygonHandler(ShapeType type,
                      GeometryFactory gf)
               throws ShapefileException

Throws:

ShapefileException

Method Detail

getShapeType

public ShapeType getShapeType()

Description copied from interface: ShapeHandler

Get the ShapeType of this handler.

Specified by:

getShapeType in interface ShapeHandler

Returns:

The ShapeType.

getLength

public int getLength(Object geometry)

Description copied from interface: ShapeHandler

Get the length of the given geometry Object in bytes not 16-bit words. This is easier to keep track of, since the ByteBuffer deals with bytes. Do not include the 8 bytes of record.

Specified by:

getLength in interface ShapeHandler

Parameters:

geometry - The geometry to analyze.

Returns:

The number of bytes the shape will take up.

read

public Object read(ByteBuffer buffer,
                   ShapeType type,
                   boolean flatFeature)

Description copied from interface: ShapeHandler

Read a geometry from the ByteBuffer. The buffer's position, byteOrder, and limit are set to that which is needed. The record has been read as well as the shape type integer. The handler need not worry about reading unused information as the ShapefileReader will correctly adjust the buffer position after this call.

Specified by:

read in interface ShapeHandler

Parameters:

buffer - The ByteBuffer to read from.

Returns:

A geometry object.

write

public void write(ByteBuffer buffer,
                  Object geometry)

Description copied from interface: ShapeHandler

Write the geometry into the ByteBuffer. The position, byteOrder, and limit are all set. The handler is not responsible for writing the record or shape type integer.

Specified by:

write in interface ShapeHandler

Parameters:

buffer - The ByteBuffer to write to.

geometry - The geometry to write.