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AliphaticAtom.java

/* $RCSfile$
 * $Author: djiao $
 * $Date: 2007-05-11 16:02:02 +0200 (Fri, 11 May 2007) $
 * $Revision: 8317 $
 * 
 * Copyright (C) 2004-2007  The Chemistry Development Kit (CDK) project
 *
 * Contact: cdk-devel@lists.sourceforge.net
 * 
 * This program 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 2.1
 * 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package org.openscience.cdk.isomorphism.matchers.smarts;

import org.openscience.cdk.interfaces.IAtom;
import org.openscience.cdk.CDKConstants;

/**
 * This matcher any non-aromatic atom. This assumes that aromaticity in the
 * molecule has been perceived.
 * 
 * @cdk.module extra
 */
00035 public class AliphaticAtom extends SMARTSAtom {

00037       private static final long serialVersionUID = 5145049891214205622L;

      public AliphaticAtom() {
            setFlag(CDKConstants.ISALIPHATIC, true);
      }

      public int getOperator() {
            if (ID != null)
                  return 1;
            return 2;
      }

00049       public boolean matches(IAtom atom) {
            switch (getOperator()) {
            case 1: {
                  if (atom.getFlag(CDKConstants.ISAROMATIC))
                        return true;
            }
            case 2:
                  return (!atom.getFlag(CDKConstants.ISAROMATIC)); 
            default:
                  return false;
            }

      };

00063       public String toString() {
            return "AliphaticAtom()";
      }
}

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