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'rapiddweller Common' is an open source Java library forked from Databene Commons by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.rapiddweller.common.iterator;

import java.util.Iterator;

/**
 * Wraps a JDK {@link Iterator} into a {@link BidirectionalIterator},
 * making the unsupported operations throw an {@link UnsupportedOperationException}.
 * Created: 12.06.2007 19:51:44
 *
 * @param  the type to be wrapped
 * @author Volker Bergmann
 */
public class JDKIteratorWrapper implements BidirectionalIterator {

  private final Iterator realIterator;

  /**
   * Instantiates a new Jdk iterator wrapper.
   *
   * @param realIterator the real iterator
   */
  public JDKIteratorWrapper(Iterator realIterator) {
    this.realIterator = realIterator;
  }

  @Override
  public boolean hasNext() {
    return realIterator.hasNext();
  }

  @Override
  public E next() {
    return realIterator.next();
  }

  @Override
  public void remove() {
    realIterator.remove();
  }

  @Override
  public E first() {
    throw new UnsupportedOperationException("Operation not supported");
  }

  @Override
  public boolean hasPrevious() {
    throw new UnsupportedOperationException("Operation not supported");
  }

  @Override
  public E previous() {
    throw new UnsupportedOperationException("Operation not supported");
  }

  @Override
  public E last() {
    throw new UnsupportedOperationException("Operation not supported");
  }
}