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.hbtop.mode;
019
020import java.util.ArrayList;
021import java.util.Collections;
022import java.util.List;
023import java.util.Objects;
024
025import org.apache.hadoop.hbase.hbtop.RecordFilter;
026import org.apache.yetus.audience.InterfaceAudience;
027
028
029/**
030 * Information about drilling down.
031 *
032 * When drilling down, going to next {@link Mode} with initial {@link RecordFilter}s.
033 */
034@InterfaceAudience.Private
035public class DrillDownInfo {
036  private final Mode nextMode;
037  private final List<RecordFilter> initialFilters;
038
039  public DrillDownInfo(Mode nextMode, List<RecordFilter> initialFilters) {
040    this.nextMode = Objects.requireNonNull(nextMode);
041    this.initialFilters = Collections.unmodifiableList(new ArrayList<>(initialFilters));
042  }
043
044  public Mode getNextMode() {
045    return nextMode;
046  }
047
048  public List<RecordFilter> getInitialFilters() {
049    return initialFilters;
050  }
051}