org.deegree.coverage.raster.io
Class RasterIOOptions

java.lang.Object
  org.deegree.coverage.raster.io.RasterIOOptions

public class RasterIOOptions
extends Object

This class is a container for various RasterIO options.

Version:

$Revision: 21739 $, $Date: 2010-01-05 14:43:16 +0100 (Di, 05 Jan 2010) $

Author:

Oliver Tonnhofer, last edited by: $Author: rbezema $

Field Summary

static String	CREATE_RASTER_MISSING_CACHE_DIR A key to signal the creation of missing raster dirs.
static String	CRS This key will get the crs of the raster.
static String	DATA_LOADING_POLICY This key will get the default loading policy (resulting in a RasterDataContainer) of the RasterDataFactory.
static String	GEO_ORIGIN_LOCATION This key will get the location of the origin of a raster geo reference see RasterGeoReference.OriginLocation
static String	LOCAL_RASTER_CACHE_DIR This key will get the local raster cache directory to be used inside the raster cache directory for the given raster.
static String	OPT_FORMAT This key stores the (output) format.
static String	ORIGIN_OF_RASTER Use this key to add the origin of the raster read, this might be handy if reading rasters from an URL (Stream) and the cache can use this id to load data from cache.
static String	RASTER_CACHE_DIR The raster cache dir to be used.
static String	READ_WLD_FILE This key is contained if the RasterReader should try to read the world file.

Constructor Summary

RasterIOOptions()
An empty constructor, nothing is set.

RasterIOOptions(RasterGeoReference.OriginLocation originLocation)

RasterIOOptions(RasterGeoReference reference)
Use this constructor if you read your raster reference some place else, or if you are reading from a stream.

RasterIOOptions(RasterGeoReference ref, String format)
Set the default loading policy to one configured in the RasterDataContainerFactory

Method Summary

void	add(String key, String value)
boolean	contains(String key)
void	copyOf(RasterIOOptions otherOptions) Copies the the values from the given options.
static byte[]	createNoData(String[] bandValues, DataType type) Create a noData array from the given strings.
static RasterIOOptions	forFile(File file) Return a RasterIOOption object with the format set according to the given file.
static RasterIOOptions	forFile(File file, RasterGeoReference envelope) Return a RasterIOOption object with the format set according to the given file with an optional RasterGeoReference.
String	get(String key)
CRS	getCRS()
RasterDataContainerFactory.LoadingPolicy	getLoadingPolicy()
byte[]	getNoDataValue() Returns the no data value.
RasterGeoReference	getRasterGeoReference()
RasterGeoReference.OriginLocation	getRasterOriginLocation()
boolean	hasRasterGeoReference()
boolean	readWorldFile()
void	setNoData(byte[] noDataValue) no data value.
void	setRasterGeoReference(RasterGeoReference geoRef)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

OPT_FORMAT

public static final String OPT_FORMAT

This key stores the (output) format.

See Also:

Constant Field Values

READ_WLD_FILE

public static final String READ_WLD_FILE

This key is contained if the RasterReader should try to read the world file.

See Also:

Constant Field Values

DATA_LOADING_POLICY

public static final String DATA_LOADING_POLICY

This key will get the default loading policy (resulting in a RasterDataContainer) of the RasterDataFactory.

See Also:

Constant Field Values

GEO_ORIGIN_LOCATION

public static final String GEO_ORIGIN_LOCATION

This key will get the location of the origin of a raster geo reference see RasterGeoReference.OriginLocation

See Also:

Constant Field Values

CRS

public static final String CRS

This key will get the crs of the raster.

See Also:

Constant Field Values

LOCAL_RASTER_CACHE_DIR

public static final String LOCAL_RASTER_CACHE_DIR

This key will get the local raster cache directory to be used inside the raster cache directory for the given raster. For example the raster cache directory is /tmp/ and the LOCAL_RASTER_CACHE_DIR is set to 'some_name' all raster caches will reside in /tmp/some_name/

See Also:

Constant Field Values

RASTER_CACHE_DIR

public static final String RASTER_CACHE_DIR

The raster cache dir to be used.

See Also:

Constant Field Values

CREATE_RASTER_MISSING_CACHE_DIR

public static final String CREATE_RASTER_MISSING_CACHE_DIR

A key to signal the creation of missing raster dirs.

See Also:

Constant Field Values

ORIGIN_OF_RASTER

public static final String ORIGIN_OF_RASTER

Use this key to add the origin of the raster read, this might be handy if reading rasters from an URL (Stream) and the cache can use this id to load data from cache.

See Also:

Constant Field Values

Constructor Detail

RasterIOOptions

public RasterIOOptions()

An empty constructor, nothing is set. The loading policy is the default value taken from the RasterDataContainerFactory. Worldfile reading is on.

RasterIOOptions

public RasterIOOptions(RasterGeoReference reference)

Use this constructor if you read your raster reference some place else, or if you are reading from a stream. Be aware to set the filetype of the data as well. The loading policy is the default value taken from the RasterDataContainerFactory.

Parameters:

reference - of the file/stream to read.

RasterIOOptions

public RasterIOOptions(RasterGeoReference ref,
                       String format)

Set the default loading policy to one configured in the RasterDataContainerFactory

Parameters:

ref -

format - of the raster to read, e.g. png, jpg, tiff..., may be null

RasterIOOptions

public RasterIOOptions(RasterGeoReference.OriginLocation originLocation)

Parameters:

originLocation - to be used for reading worldfiles.

Method Detail

add

public void add(String key,
                String value)

Parameters:

key -

value -

contains

public boolean contains(String key)

Parameters:

key -

Returns:

true if it contains the option

get

public String get(String key)

Parameters:

key -

Returns:

the option value or null

forFile

public static RasterIOOptions forFile(File file)

Return a RasterIOOption object with the format set according to the given file.

Parameters:

file -

Returns:

RasterIOOption proper format.

forFile

public static RasterIOOptions forFile(File file,
                                      RasterGeoReference envelope)

Return a RasterIOOption object with the format set according to the given file with an optional RasterGeoReference.

Parameters:

file -

envelope -

Returns:

RasterIOOption proper format.

toString

public String toString()

Overrides:

toString in class Object

readWorldFile

public boolean readWorldFile()

Returns:

true if the RasterReader should read the corresponding worldfile.

getLoadingPolicy

public RasterDataContainerFactory.LoadingPolicy getLoadingPolicy()

Returns:

the loading policy (and thus the raster data container) of the RasterDataFactory.

hasRasterGeoReference

public boolean hasRasterGeoReference()

Returns:

true if the options contain a raster geo reference.

getRasterGeoReference

public RasterGeoReference getRasterGeoReference()

Returns:

the raster geo reference

setRasterGeoReference

public void setRasterGeoReference(RasterGeoReference geoRef)

Parameters:

geoRef - the raster geo reference to use for the loaded raster.

getNoDataValue

public byte[] getNoDataValue()

Returns the no data value. A no data value should be added to the RasterIOOptions by using setNoData(byte[]). The byte[] can be created from an array of Strings by using the createNoData(String[], DataType).

Returns:

the no data values for the bands of the raster or null if no data was specified.

getRasterOriginLocation

public RasterGeoReference.OriginLocation getRasterOriginLocation()

Returns:

the location of the origin of the read file. If not defined this method will return return RasterGeoReference.OriginLocation#CENTER;

getCRS

public CRS getCRS()

Returns:

the defined crs or null if no crs was defined.

setNoData

public void setNoData(byte[] noDataValue)

no data value. The byte[] can be created from an array of Strings by using the createNoData(String[], DataType).

Parameters:

noDataValue - containing byte representations of the rasters no data value.

createNoData

public static byte[] createNoData(String[] bandValues,
                                  DataType type)
                           throws NumberFormatException

Create a noData array from the given strings. Each string will be interpreted as the given type.

Parameters:

bandValues - String representations of each bands no data value e.g {10.0, 80.5, -100} for a 3 band float raster.

type - of the no data values.

Returns:

a byte array containing the no data values for each band, the bytes can be 'reversed' by using the ByteBuffer methods. If either the type or the array is null null will be returned.

Throws:

NumberFormatException - if one of the Strings could not be decoded.

copyOf

public void copyOf(RasterIOOptions otherOptions)

Copies the the values from the given options.

Parameters:

otherOptions -