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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,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  
21  package org.apache.mina.http.api;
22  
23  import java.util.List;
24  import java.util.Map;
25  
26  /**
27   * An HTTP request element
28   * 
29   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
30   */
31  public interface HttpRequest extends HttpMessage {
32  
33      /**
34       * Determines whether this request contains at least one parameter with the specified name
35       * 
36       * @param name The parameter name
37       * @return <tt>true</tt> if this request contains at least one parameter with the specified name
38       */
39      boolean containsParameter(String name);
40  
41      /**
42       * Returns the value of a request parameter as a String, or null if the parameter does not exist.
43       * 
44       * If the request contained multiple parameters with the same name, this method returns the first parameter
45       * encountered in the request with the specified name
46       * 
47       * @param name The parameter name
48       * @return The value
49       */
50      String getParameter(String name);
51      
52      /**
53       * @return The query part
54       */
55      String getQueryString();
56  
57      /**
58       * @return a read only {@link Map} of query parameters whose key is a {@link String} and whose value is a
59       * {@link List} of {@link String}s.
60       */
61      Map<String, List<String>> getParameters();
62  
63      /**
64       * Return the HTTP method used for this message {@link HttpMethod}
65       * 
66       * @return the method
67       */
68      HttpMethod getMethod();
69      
70      /**
71       * Return the HTTP request path
72       * 
73       * @return the request path
74       */
75      String getRequestPath();
76  }