org.deegree.cs.persistence.proj4
Class ProjFileResource

java.lang.Object
  org.deegree.cs.persistence.proj4.ProjFileResource

All Implemented Interfaces:

CRSResource<Map<String,String>>, XLinkResolver<Map<String,String>>

public class ProjFileResource
extends Object
implements CRSResource<Map<String,String>>

The ProjFileResource reads a list of proj4 definitions from a file.

Version:

$Revision: 30120 $, $Date: 2011-03-22 10:04:15 +0100 (Tue, 22 Mar 2011) $

Author:

Rutger Bezema, last edited by: $Author: aschmitz $

Constructor Summary

ProjFileResource(File file)

Method Summary

Set<CRSCodeType>	getAvailableCodes()
Transformation	getTransformation(ICRS sourceCRS, ICRS targetCRS) Implementations should find a given transformation (chain) which transforms coordinates of the given coordinate system into coordinates of the target crs.
Map<String,String>	getURIAsType(String uri) Opens a stream to a resource which is defined by the uri.
Helmert	getWGS84Transformation(IGeographicCRS sourceCRS) Implementations should find the helmert transformation which transforms coordinates of the geodetic datum into coordinates of the WGS84 datum.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjFileResource

public ProjFileResource(File file)

Parameters:

provider -

properties -

Method Detail

getWGS84Transformation

public Helmert getWGS84Transformation(IGeographicCRS sourceCRS)

Description copied from interface: CRSResource

Implementations should find the helmert transformation which transforms coordinates of the geodetic datum into coordinates of the WGS84 datum. If no such transformation could be found, the implementation should return null

Specified by:

getWGS84Transformation in interface CRSResource<Map<String,String>>

Parameters:

sourceCRS - to retrieve the transformation for.

Returns:

the Helmert transformation or null if no such transformation was defined.

getURIAsType

public Map<String,String> getURIAsType(String uri)
                                throws IOException

Description copied from interface: XLinkResolver

Opens a stream to a resource which is defined by the uri.

Specified by:

getURIAsType in interface XLinkResolver<Map<String,String>>

Parameters:

uri - to locate

Returns:

an opened InputStream to the given resource or null if no resource was found.

Throws:

IOException - If an error occurred while locating or opening the resource.

getAvailableCodes

public Set<CRSCodeType> getAvailableCodes()

Returns:

a set containing all available ids.

getTransformation

public Transformation getTransformation(ICRS sourceCRS,
                                        ICRS targetCRS)

Description copied from interface: CRSResource

Implementations should find a given transformation (chain) which transforms coordinates of the given coordinate system into coordinates of the target crs. If no such transformation could be found, the implementation should return null

Specified by:

getTransformation in interface CRSResource<Map<String,String>>

Parameters:

sourceCRS - start point of the transformation.

targetCRS - end point of the transformations

Returns:

the Transformation or null if no such transformation was defined.