Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.dal.feature.spi;

import java.util.Collections;

import java.util.Iterator;

import java.util.List;

/**

 * Default implementation for {@link LongList}<br>

 * <br>

 *

 * <strong>Note:</strong> This class is based on {@link java.util.List}

 */

public class DefaultLongList implements LongList {

        private List list = null;

        public DefaultLongList(List list) {

                this.list = list;

        }

        public long getSize() {

            if( list==null ) {

                return 0;

            }

            return list.size();

        }

        public boolean isEmpty() {

            if( list==null ) {

                return true;

            }

            return list.isEmpty();

        }

        public Iterator iterator() {

            if( list==null ) {

                return Collections.emptyIterator();

            }

            return list.iterator();

        }

        public Iterator iterator(long index) {

            if( list==null ) {

                return Collections.emptyIterator();

            }

            if (index > Integer.MAX_VALUE || index < Integer.MIN_VALUE) {

                    throw new IndexOutOfBoundsException();

            }

            return list.listIterator((int) index);

        }

}