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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.ThreadingBehavior;
34  import org.apache.http.annotation.Contract;
35  import org.apache.http.util.Args;
36  import org.apache.http.util.LangUtils;
37  
38  /**
39   * Basic implementation of {@link NameValuePair}.
40   *
41   * @since 4.0
42   */
43  @Contract(threading = ThreadingBehavior.IMMUTABLE)
44  public class BasicNameValuePair implements NameValuePair, Cloneable, Serializable {
45  
46      private static final long serialVersionUID = -6437800749411518984L;
47  
48      private final String name;
49      private final String value;
50  
51      /**
52       * Default Constructor taking a name and a value. The value may be null.
53       *
54       * @param name The name.
55       * @param value The value.
56       */
57      public BasicNameValuePair(final String name, final String value) {
58          super();
59          this.name = Args.notNull(name, "Name");
60          this.value = value;
61      }
62  
63      @Override
64      public String getName() {
65          return this.name;
66      }
67  
68      @Override
69      public String getValue() {
70          return this.value;
71      }
72  
73      @Override
74      public String toString() {
75          // don't call complex default formatting for a simple toString
76  
77          if (this.value == null) {
78              return name;
79          }
80          final int len = this.name.length() + 1 + this.value.length();
81          final StringBuilder buffer = new StringBuilder(len);
82          buffer.append(this.name);
83          buffer.append("=");
84          buffer.append(this.value);
85          return buffer.toString();
86      }
87  
88      @Override
89      public boolean equals(final Object object) {
90          if (this == object) {
91              return true;
92          }
93          if (object instanceof NameValuePair) {
94              final BasicNameValuePair that = (BasicNameValuePair) object;
95              return this.name.equals(that.name)
96                    && LangUtils.equals(this.value, that.value);
97          }
98          return false;
99      }
100 
101     @Override
102     public int hashCode() {
103         int hash = LangUtils.HASH_SEED;
104         hash = LangUtils.hashCode(hash, this.name);
105         hash = LangUtils.hashCode(hash, this.value);
106         return hash;
107     }
108 
109     @Override
110     public Object clone() throws CloneNotSupportedException {
111         return super.clone();
112     }
113 
114 }