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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
28   * 
29   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
30   * 
31   */
32  public interface HttpRequest extends HttpMessage {
33  
34      /**
35       * Determines whether this request contains at least one parameter with the specified name
36       * 
37       * @param name The parameter name
38       * @return <code>true</code> if this request contains at least one parameter with the specified name
39       */
40      boolean containsParameter(String name);
41  
42      /**
43       * Returns the value of a request parameter as a String, or null if the parameter does not exist.
44       * 
45       * If the request contained multiple parameters with the same name, this method returns the first parameter
46       * encountered in the request with the specified name
47       * 
48       * @param name The parameter name
49       * @return The value
50       */
51      String getParameter(String name);
52  
53      /**
54       * Returns a read only {@link Map} of query parameters whose key is a {@link String} and whose value is a
55       * {@link List} of {@link String}s.
56       */
57      Map<String, List<String>> getParameters();
58  
59      /**
60       * Return the HTTP method used for this message {@link HttpMethod}
61       * 
62       * @return the method
63       */
64      HttpMethod getMethod();
65  }