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Java client for Arcus memcached

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/*
 * arcus-java-client : Arcus Java client
 * Copyright 2010-2014 NAVER Corp.
 *
 * 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 net.spy.memcached;

import java.util.AbstractList;
import java.util.List;

public class PartitionedList extends AbstractList> {

  private final List list;
  private final int size;

  public PartitionedList(List list, int size) {
    this.list = list;
    this.size = size;
  }

  @Override
  public List get(int index) {
    int listSize = size();
    if (listSize < 0) {
      throw new IllegalArgumentException("negative size: " + listSize);
    }
    if (index < 0) {
      throw new IndexOutOfBoundsException("index " + index
          + " must not be negative");
    }
    if (index >= listSize) {
      throw new IndexOutOfBoundsException("index " + index
          + " must be less than size " + listSize);
    }
    int start = index * size;
    int end = Math.min(start + size, list.size());
    return list.subList(start, end);
  }

  @Override
  public int size() {
    return (list.size() + size - 1) / size;
  }

  @Override
  public boolean isEmpty() {
    return list.isEmpty();
  }
}