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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.collections.primitives.decorators;
18  
19  import java.io.Serializable;
20  
21  import org.apache.commons.collections.primitives.ByteList;
22  
23  /**
24   * 
25   * @since Commons Primitives 1.0
26   * @version $Revision: 480463 $ $Date: 2006-11-29 03:15:23 -0500 (Wed, 29 Nov 2006) $
27   * 
28   * @author Rodney Waldhoff 
29   */
30  public final class UnmodifiableByteList extends BaseUnmodifiableByteList implements Serializable {
31      UnmodifiableByteList(ByteList list) {
32          this.proxied = list;
33      }
34      
35      public static final ByteList wrap(ByteList list) {
36          if(null == list) {
37              return null; 
38          } else if(list instanceof UnmodifiableByteList) {
39              return list;
40          } else if(list instanceof Serializable) {
41              return new UnmodifiableByteList(list);
42          } else {
43              return new NonSerializableUnmodifiableByteList(list);
44          }
45      }
46  
47      protected ByteList getProxiedList() {
48          return proxied;
49      }
50  
51      private ByteList proxied = null;
52  }