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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.hadoop.hbase.client;

import java.io.IOException;

import org.apache.hadoop.hbase.classification.InterfaceAudience;

/**
 * Helper callable for internal use when you just want to override a single method of a {@link
 * RetryingCallable}. By default, this just delegates all {@link RetryingCallable} methods to the
 * specified delegate.
 * @param  Result class from calls to the delegate {@link RetryingCallable}
 * @param  Type of the delegate class
 */
@InterfaceAudience.Private
public class DelegatingRetryingCallable> implements
    RetryingCallable {
  protected final D delegate;

  public DelegatingRetryingCallable(D delegate) {
    this.delegate = delegate;
  }

  @Override
  public T call(int callTimeout) throws Exception {
    return delegate.call(callTimeout);
  }

  @Override
  public void prepare(boolean reload) throws IOException {
    delegate.prepare(reload);
  }

  @Override
  public void throwable(Throwable t, boolean retrying) {
    delegate.throwable(t, retrying);
  }

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

  @Override
  public long sleep(long pause, int tries) {
    return delegate.sleep(pause, tries);
  }
}