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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 com.rapiddweller.common.HeavyweightIterator;

import java.io.Closeable;
import java.io.IOException;
import java.util.Iterator;

/**
 * Proxy for an {@link Iterator} with additional support for
 * iterators that implement the {@link Closeable} interface.
 * Created: 13.10.2010 13:22:46
 *
 * @param  the type to iterate
 * @author Volker Bergmann
 * @since 0.5.4
 */
public class IteratorProxy implements HeavyweightIterator {

  /**
   * The Source.
   */
  protected Iterator source;

  /**
   * Instantiates a new Iterator proxy.
   *
   * @param source the source
   */
  public IteratorProxy(Iterator source) {
    this.source = source;
  }

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

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

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

  @Override
  public void close() throws IOException {
    if (source instanceof Closeable) {
      ((Closeable) source).close();
    }
  }

  @Override
  public String toString() {
    return source.toString();
  }

}