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package de.lmu.ifi.dbs.elki.result.textwriter.writers;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.io.IOException;
import de.lmu.ifi.dbs.elki.result.textwriter.TextWriterStream;
import de.lmu.ifi.dbs.elki.result.textwriter.TextWriterWriterInterface;
import de.lmu.ifi.dbs.elki.utilities.exceptions.UnableToComplyException;
import de.lmu.ifi.dbs.elki.utilities.pairs.Pair;
/**
* Write a pair
*
* @author Erich Schubert
*
*/
public class TextWriterPair extends TextWriterWriterInterface<Pair<?,?>> {
/**
* Serialize a pair, component-wise
*/
@Override
@SuppressWarnings("unchecked")
public void write(TextWriterStream out, String label, Pair<?,?> object) throws UnableToComplyException, IOException {
if (object != null) {
Object first = object.getFirst();
if (first != null) {
TextWriterWriterInterface<Object> tw = (TextWriterWriterInterface<Object>) out.getWriterFor(first);
if (tw == null) {
throw new UnableToComplyException("No handler for database object itself: " + first.getClass().getSimpleName());
}
tw.write(out, label, first);
}
Object second = object.getSecond();
if (second != null) {
TextWriterWriterInterface<Object> tw = (TextWriterWriterInterface<Object>) out.getWriterFor(second);
if (tw == null) {
throw new UnableToComplyException("No handler for database object itself: " + second.getClass().getSimpleName());
}
tw.write(out, label, second);
}
}
}
}
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