/**
 * Copyright 2010 Google Inc.
 *
 * 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 org.waveprotocol.wave.model.wave.data.impl;

import org.waveprotocol.wave.model.wave.ParticipantId;
import org.waveprotocol.wave.model.wave.data.DocumentOperationSink;
import org.waveprotocol.wave.model.wave.data.ReadableBlipData;
import org.waveprotocol.wave.model.wave.data.ReadableWaveletData;

import java.util.Set;

/**
 * Forwards to a delegate. Implementations must implement the delegate() method
 * and override any appropriate methods.
 *
 */
public abstract class ForwardingReadableBlipData implements ReadableBlipData {

  protected abstract ReadableBlipData delegate();

  @Override
  public ReadableWaveletData getWavelet() {
    return delegate().getWavelet();
  }

  @Override
  public ParticipantId getAuthor() {
    return delegate().getAuthor();
  }

  @Override
  public Set<ParticipantId> getContributors() {
    return delegate().getContributors();
  }

  @Override
  public long getLastModifiedTime() {
    return delegate().getLastModifiedTime();
  }

  @Override
  public long getLastModifiedVersion() {
    return delegate().getLastModifiedVersion();
  }

  @Override
  public DocumentOperationSink getContent() {
    return delegate().getContent();
  }

  @Override
  public String getId() {
    return delegate().getId();
  }
}