001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client;
019
020import org.apache.yetus.audience.InterfaceAudience;
021
022/**
023 * Provide a way to access the inner buffer.
024 * The purpose is to reduce the elapsed time to move a large number
025 * of elements between collections.
026 * @param <T>
027 */
028@InterfaceAudience.Private
029public interface RowAccess<T> extends Iterable<T> {
030  /**
031   * @return true if there are no elements.
032   */
033  boolean isEmpty();
034
035  /**
036   * @return the number of elements in this list.
037   */
038  int size();
039}