/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE
 * or https://OpenDS.dev.java.net/OpenDS.LICENSE.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at
 * trunk/opends/resource/legal-notices/OpenDS.LICENSE.  If applicable,
 * add the following below this CDDL HEADER, with the fields enclosed
 * by brackets "[]" replaced with your own identifying information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2009 Sun Microsystems, Inc.
 */

package org.opends.sdk.requests;



import java.util.Collections;
import java.util.List;

import org.opends.sdk.DecodeException;
import org.opends.sdk.DecodeOptions;
import org.opends.sdk.controls.Control;
import org.opends.sdk.controls.ControlDecoder;



/**
 * Unmodifiable request implementation.
 *
 * @param <R>
 *          The type of request.
 */
abstract class AbstractUnmodifiableRequestImpl<R extends Request> implements
    Request
{

  private final R impl;



  /**
   * Creates a new unmodifiable request implementation.
   *
   * @param impl
   *          The underlying request implementation to be made unmodifiable.
   */
  AbstractUnmodifiableRequestImpl(final R impl)
  {
    this.impl = impl;
  }



  /**
   * {@inheritDoc}
   */
  public final R addControl(final Control control)
      throws UnsupportedOperationException, NullPointerException
  {
    throw new UnsupportedOperationException();
  }



  /**
   * {@inheritDoc}
   */
  public final <C extends Control> C getControl(
      final ControlDecoder<C> decoder, final DecodeOptions options)
      throws NullPointerException, DecodeException
  {
    // FIXME: ensure that controls are immutable.
    return impl.getControl(decoder, options);
  }



  /**
   * {@inheritDoc}
   */
  public final List<Control> getControls()
  {
    // FIXME: ensure that controls are immutable.
    return Collections.unmodifiableList(impl.getControls());
  }



  /**
   * {@inheritDoc}
   */
  @Override
  public final String toString()
  {
    return impl.toString();
  }

}