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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.http.message;
29  
30  import java.io.Serializable;
31  
32  import org.apache.http.NameValuePair;
33  import org.apache.http.annotation.Immutable;
34  import org.apache.http.util.Args;
35  import org.apache.http.util.LangUtils;
36  
37  /**
38   * Basic implementation of {@link NameValuePair}.
39   *
40   * @since 4.0
41   */
42  @Immutable
43  public class BasicNameValuePair implements NameValuePair, Cloneable, Serializable {
44  
45      private static final long serialVersionUID = -6437800749411518984L;
46  
47      private final String name;
48      private final String value;
49  
50      /**
51       * Default Constructor taking a name and a value. The value may be null.
52       *
53       * @param name The name.
54       * @param value The value.
55       */
56      public BasicNameValuePair(final String name, final String value) {
57          super();
58          this.name = Args.notNull(name, "Name");
59          this.value = value;
60      }
61  
62      @Override
63      public String getName() {
64          return this.name;
65      }
66  
67      @Override
68      public String getValue() {
69          return this.value;
70      }
71  
72      @Override
73      public String toString() {
74          // don't call complex default formatting for a simple toString
75  
76          if (this.value == null) {
77              return name;
78          }
79          final int len = this.name.length() + 1 + this.value.length();
80          final StringBuilder buffer = new StringBuilder(len);
81          buffer.append(this.name);
82          buffer.append("=");
83          buffer.append(this.value);
84          return buffer.toString();
85      }
86  
87      @Override
88      public boolean equals(final Object object) {
89          if (this == object) {
90              return true;
91          }
92          if (object instanceof NameValuePair) {
93              final BasicNameValuePair that = (BasicNameValuePair) object;
94              return this.name.equals(that.name)
95                    && LangUtils.equals(this.value, that.value);
96          }
97          return false;
98      }
99  
100     @Override
101     public int hashCode() {
102         int hash = LangUtils.HASH_SEED;
103         hash = LangUtils.hashCode(hash, this.name);
104         hash = LangUtils.hashCode(hash, this.value);
105         return hash;
106     }
107 
108     @Override
109     public Object clone() throws CloneNotSupportedException {
110         return super.clone();
111     }
112 
113 }