1 /*
2  * Copyright (C) 2006 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.google.inject.name;
18 
19 import static com.google.common.base.Preconditions.checkNotNull;
20 
21 import com.google.inject.internal.Annotations;
22 import java.io.Serializable;
23 import java.lang.annotation.Annotation;
24 
25 class NamedImpl implements Named, Serializable {
26 
27   private final String value;
28 
NamedImpl(String value)29   public NamedImpl(String value) {
30     this.value = checkNotNull(value, "name");
31   }
32 
33   @Override
value()34   public String value() {
35     return this.value;
36   }
37 
38   @Override
hashCode()39   public int hashCode() {
40     // This is specified in java.lang.Annotation.
41     return (127 * "value".hashCode()) ^ value.hashCode();
42   }
43 
44   @Override
equals(Object o)45   public boolean equals(Object o) {
46     if (!(o instanceof Named)) {
47       return false;
48     }
49 
50     Named other = (Named) o;
51     return value.equals(other.value());
52   }
53 
54   @Override
toString()55   public String toString() {
56     return "@" + Named.class.getName() + "(value=" + Annotations.memberValueString(value) + ")";
57   }
58 
59   @Override
annotationType()60   public Class<? extends Annotation> annotationType() {
61     return Named.class;
62   }
63 
64   private static final long serialVersionUID = 0;
65 }
66