/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.referencing.factory.epsg;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import org.geotools.factory.Hints;
import org.geotools.metadata.iso.citation.Citations;
import org.geotools.referencing.NamedIdentifier;
import org.geotools.referencing.crs.DefaultEngineeringCRS;
import org.geotools.referencing.cs.DefaultCartesianCS;
import org.geotools.referencing.datum.DefaultEngineeringDatum;
import org.geotools.referencing.factory.DirectAuthorityFactory;
import org.geotools.resources.i18n.ErrorKeys;
import org.geotools.resources.i18n.Errors;
import org.geotools.util.SimpleInternationalString;
import org.opengis.metadata.citation.Citation;
import org.opengis.referencing.FactoryException;
import org.opengis.referencing.IdentifiedObject;
import org.opengis.referencing.NoSuchAuthorityCodeException;
import org.opengis.referencing.crs.CRSAuthorityFactory;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.crs.EngineeringCRS;
import org.opengis.util.InternationalString;
/**
* A factory providing a EPSG code for an image Display engineering systems
*
* @author Andrea Aime - GeoSolutions
* @author Daniele Romagnoli - GeoSolutions
*
*
*
*
* @source $URL$
*/
public class DisplayCRSAuthorityFactory extends DirectAuthorityFactory implements
CRSAuthorityFactory {
static final String DISPLAY_CODE = "404001";
/**
* A special {@link DefaultEngineeringCRS#GENERIC_2D} for Image management.
*/
public static final DefaultEngineeringCRS DISPLAY = new DefaultEngineeringCRS(
buildProperties("Image 2D cartesian plane in pixel unit", Citations.EPSG, DISPLAY_CODE),
DefaultEngineeringDatum.UNKNOWN, DefaultCartesianCS.DISPLAY, true);
static Map<String, ?> buildProperties(String name, Citation authority, String code) {
Map<String, Object> props = new HashMap<String, Object>();
props.put(IdentifiedObject.NAME_KEY, name);
props.put(IdentifiedObject.IDENTIFIERS_KEY, new NamedIdentifier(authority, code));
return props;
}
public DisplayCRSAuthorityFactory() {
this(null);
}
public DisplayCRSAuthorityFactory(Hints hints) {
super(hints, ThreadedEpsgFactory.PRIORITY - 10);
}
@Override
public Citation getAuthority() {
return Citations.EPSG;
}
public Set<String> getAuthorityCodes(Class<? extends IdentifiedObject> type)
throws FactoryException {
if (type.isAssignableFrom(EngineeringCRS.class)) {
final Set set = new LinkedHashSet();
set.add(DISPLAY_CODE);
return set;
} else {
return Collections.EMPTY_SET;
}
}
public InternationalString getDescriptionText(String code) throws NoSuchAuthorityCodeException,
FactoryException {
if(code.equals("EPSG:" + DISPLAY_CODE)) {
return new SimpleInternationalString(
"A two-dimensional wildcard coordinate system with X,Y axis where Y displays dows");
} else {
throw noSuchAuthorityException(code);
}
}
/**
* Creates an object from the specified code. The default implementation delegates to
* <code>{@linkplain #createCoordinateReferenceSystem createCoordinateReferenceSystem}(code)</code>
* .
*/
public IdentifiedObject createObject(final String code) throws FactoryException {
return createCoordinateReferenceSystem(code);
}
/**
* Creates a coordinate reference system from the specified code. The default implementation
* delegates to <code>{@linkplain #createEngineeringCRS(String)}(code)</code>.
*/
public CoordinateReferenceSystem createCoordinateReferenceSystem(final String code)
throws FactoryException {
return createEngineeringCRS(code);
}
@Override
public EngineeringCRS createEngineeringCRS(String code) throws NoSuchAuthorityCodeException,
FactoryException {
if (DISPLAY_CODE.equals(code) || ("EPSG:" + DISPLAY_CODE).equals(code)) {
return DISPLAY;
} else {
throw noSuchAuthorityException(code);
}
}
private NoSuchAuthorityCodeException noSuchAuthorityException(String code) throws NoSuchAuthorityCodeException {
String authority = "EPSG";
return new NoSuchAuthorityCodeException(Errors.format(ErrorKeys.NO_SUCH_AUTHORITY_CODE_$3,
code, authority, EngineeringCRS.class), authority, code);
}
}