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/*
* This file is part of the GeoLatte project.
*
* GeoLatte 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, either version 3 of the License, or
* (at your option) any later version.
*
* GeoLatte 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with GeoLatte. If not, see .
*
* Copyright (C) 2010 - 2010 and Ownership of code is shared by:
* Qmino bvba - Romeinsestraat 18 - 3001 Heverlee (http://www.qmino.com)
* Geovise bvba - Generaal Eisenhowerlei 9 - 2140 Antwerpen (http://www.geovise.com)
*/
package org.geolatte.common.reflection;
import org.geolatte.common.Feature;
import org.geolatte.common.transformer.Transformation;
import org.geolatte.common.transformer.TransformationException;
import java.util.HashMap;
/**
* A base transformation that wraps any given object into a feature interface. The transformation
* may be subsequently called with objects of different classes.
* If a given object is null, null will be returned as output.
*
*
* @author Yves Vandewoude
* @author Qmino bvba
* @since SDK1.5
*/
public class ObjectToFeatureTransformation implements Transformation {
//Is this really necessary? EntityClassReader already caches the map between class and EntityClassReader?
HashMap readers = new HashMap();
/**
* Transforms any object into a feature. If the given object is null, null is returned.
* @param input The given input
* @return a feature-wrapper around the given object
* @throws TransformationException if the object can not be completed
*/
public Feature transform(Source input) throws TransformationException {
if (input == null) {
return null;
} else {
EntityClassReader reader = readers.get(input.getClass());
if (reader == null) {
reader = EntityClassReader.getClassReaderFor(input.getClass());
readers.put(input.getClass(), reader);
}
try {
return reader.asFeature(input);
} catch (InvalidObjectReaderException e) {
// Can't happen!
throw new TransformationException("Transformation failed", e);
}
}
}
}
