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JTS Topology Suite 1.14 with additional functions for GeoSpark

There is a newer version: 0.1.4

/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
* For more information, contact:
*
*     Vivid Solutions
*     Suite #1A
*     2328 Government Street
*     Victoria BC  V8T 5G5
*     Canada
*
*     (250)385-6040
*     www.vividsolutions.com
*/

package com.vividsolutions.jts.geom.util;

import com.vividsolutions.jts.geom.*;

/**
 * A visitor to {@link Geometry} componets, which 
 * allows short-circuiting when a defined condition holds.
 *
 * @version 1.7
 */
public abstract class ShortCircuitedGeometryVisitor
{
  private boolean isDone = false;

  public ShortCircuitedGeometryVisitor() {
  }

  public void applyTo(Geometry geom) {
    for (int i = 0; i < geom.getNumGeometries() && ! isDone; i++) {
      Geometry element = geom.getGeometryN(i);
      if (! (element instanceof GeometryCollection)) {
        visit(element);
        if (isDone()) {
          isDone = true;
          return;
        }
      }
      else
        applyTo(element);
    }
  }

  protected abstract void visit(Geometry element);

  protected abstract boolean isDone();
}