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) 2011
 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 de.lmu.ifi.dbs.elki.result.textwriter.TextWriterStream;
import de.lmu.ifi.dbs.elki.result.textwriter.TextWriterWriterInterface;
import de.lmu.ifi.dbs.elki.utilities.pairs.DoubleDoublePair;

/**
 * Write a pair
 * 
 * @author Erich Schubert
 * 
 */
public class TextWriterDoubleDoublePair extends TextWriterWriterInterface<DoubleDoublePair> {
  /**
   * Serialize a pair, component-wise
   */
  @Override
  public void write(TextWriterStream out, String label, DoubleDoublePair object) {
    if(object != null) {
      String res;
      if(label != null) {
        res = label + "=" + object.first + "," + object.second;
      }
      else {
        res = object.first + " " + object.second;
      }
      out.inlinePrintNoQuotes(res);
    }
  }
}