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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.hadoop.hbase.security.visibility;
19  
20  import java.util.ArrayList;
21  import java.util.Collections;
22  import java.util.List;
23  
24  import org.apache.hadoop.classification.InterfaceAudience;
25  import org.apache.hadoop.classification.InterfaceStability;
26  
27  /**
28   * This class contains visibility labels associated with a Scan/Get deciding which all labeled data
29   * current scan/get can access.
30   */
31  @InterfaceAudience.Public
32  @InterfaceStability.Stable
33  public class Authorizations {
34  
35    private List<String> labels;
36  
37    public Authorizations(String... labels) {
38      this.labels = new ArrayList<String>(labels.length);
39      for (String label : labels) {
40        this.labels.add(label);
41      }
42    }
43  
44    public Authorizations(List<String> labels) {
45      this.labels = labels;
46    }
47  
48    public List<String> getLabels() {
49      return Collections.unmodifiableList(this.labels);
50    }
51    
52    @Override
53    public String toString() {
54      return this.labels.toString();
55    }
56  }