/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, 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.util;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import org.geotools.factory.Hints;
/**
* Converter factory which can convert between URL,URI, and String.
* <p>
* Handles the following conversions:
* <ul>
* <li>String -> URL
* <li>String -> URI
* <li>URL -> URI
* <li>URI -> URL
* </ul>
* </p>
*
* @author Justin Deoliveira, OpenGEO
* @since 2.5
*
* @source $URL$
*/
public class URConverterFactory implements ConverterFactory {
public static final Converter StringToURL = new Converter() {
public <T> T convert(Object source, Class<T> target) throws Exception {
String s = (String) source;
try {
return (T) new URL( s );
}
catch( MalformedURLException e1 ) {
File f = new File( s );
try {
return (T) f.toURI().toURL();
}
catch( MalformedURLException e2 ) {}
}
return null;
}
};
public static final Converter StringToURI = new Converter() {
public <T> T convert(Object source, Class<T> target) throws Exception {
String s = (String) source;
try {
return (T) new URI( s );
}
catch( URISyntaxException e1 ) {
File f = new File( s );
try {
return (T) f.toURI();
}
catch( Exception e2 ) {}
}
return null;
}
};
public static final Converter URLToURI = new Converter() {
public <T> T convert(Object source, Class<T> target) throws Exception {
URL url = (URL) source;
return (T) url.toURI();
}
};
public static final Converter URIToURL = new Converter() {
public <T> T convert(Object source, Class<T> target) throws Exception {
URI uri = (URI) source;
return (T) uri.toURL();
}
};
public Converter createConverter(Class<?> source, Class<?> target,
Hints hints) {
if ( String.class.equals( source ) ) {
if ( URL.class.equals( target ) ) {
return StringToURL;
}
if ( URI.class.equals( target ) ) {
return StringToURI;
}
}
if ( URL.class.equals( source ) && URI.class.equals( target ) ) {
return URLToURI;
}
if ( URI.class.equals( source ) && URL.class.equals( target ) ) {
return URIToURL;
}
return null;
}
}