net.sf.staccatocommons.collections.internal.iterator.NextOptionIterator Maven / Gradle / Ivy

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/*
 Copyright (c) 2011, The Staccato-Commons Team

 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; version 3 of the License.

 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.
 */
package net.sf.staccatocommons.collections.internal.iterator;

import net.sf.staccatocommons.iterators.NextGetIterator;
import net.sf.staccatocommons.lang.Option;

/**
 * @author flbulgarelli
 * 
 */
public abstract class NextOptionIterator extends NextGetIterator {

  protected final boolean updateNext() {
    Option nextOption = nextOption();
    if (nextOption.isDefined()) {
      setNext(nextOption.value());
      return true;
    }
    return false;
  }

  protected abstract Option nextOption();

}