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1 /*
2  * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/message/AbstractHttpMessage.java $
3  * $Revision: 620287 $
4  * $Date: 2008-02-10 07:15:53 -0800 (Sun, 10 Feb 2008) $
5  *
6  * ====================================================================
7  * Licensed to the Apache Software Foundation (ASF) under one
8  * or more contributor license agreements.  See the NOTICE file
9  * distributed with this work for additional information
10  * regarding copyright ownership.  The ASF licenses this file
11  * to you under the Apache License, Version 2.0 (the
12  * "License"); you may not use this file except in compliance
13  * with the License.  You may obtain a copy of the License at
14  *
15  *   http://www.apache.org/licenses/LICENSE-2.0
16  *
17  * Unless required by applicable law or agreed to in writing,
18  * software distributed under the License is distributed on an
19  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20  * KIND, either express or implied.  See the License for the
21  * specific language governing permissions and limitations
22  * under the License.
23  * ====================================================================
24  *
25  * This software consists of voluntary contributions made by many
26  * individuals on behalf of the Apache Software Foundation.  For more
27  * information on the Apache Software Foundation, please see
28  * <http://www.apache.org/>.
29  *
30  */
31 
32 package org.apache.http.message;
33 
34 import java.util.Iterator;
35 
36 import org.apache.http.Header;
37 import org.apache.http.HeaderIterator;
38 import org.apache.http.HttpMessage;
39 import org.apache.http.params.HttpParams;
40 import org.apache.http.params.BasicHttpParams;
41 
42 /**
43  * Basic implementation of an HTTP message that can be modified.
44  *
45  * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
46  *
47  * @version $Revision: 620287 $
48  *
49  * @since 4.0
50  */
51 public abstract class AbstractHttpMessage implements HttpMessage {
52 
53     protected HeaderGroup headergroup;
54 
55     protected HttpParams params;
56 
AbstractHttpMessage(final HttpParams params)57     protected AbstractHttpMessage(final HttpParams params) {
58         super();
59         this.headergroup = new HeaderGroup();
60         this.params = params;
61     }
62 
AbstractHttpMessage()63     protected AbstractHttpMessage() {
64         this(null);
65     }
66 
67     // non-javadoc, see interface HttpMessage
containsHeader(String name)68     public boolean containsHeader(String name) {
69         return this.headergroup.containsHeader(name);
70     }
71 
72     // non-javadoc, see interface HttpMessage
getHeaders(final String name)73     public Header[] getHeaders(final String name) {
74         return this.headergroup.getHeaders(name);
75     }
76 
77     // non-javadoc, see interface HttpMessage
getFirstHeader(final String name)78     public Header getFirstHeader(final String name) {
79         return this.headergroup.getFirstHeader(name);
80     }
81 
82     // non-javadoc, see interface HttpMessage
getLastHeader(final String name)83     public Header getLastHeader(final String name) {
84         return this.headergroup.getLastHeader(name);
85     }
86 
87     // non-javadoc, see interface HttpMessage
getAllHeaders()88     public Header[] getAllHeaders() {
89         return this.headergroup.getAllHeaders();
90     }
91 
92     // non-javadoc, see interface HttpMessage
addHeader(final Header header)93     public void addHeader(final Header header) {
94         this.headergroup.addHeader(header);
95     }
96 
97     // non-javadoc, see interface HttpMessage
addHeader(final String name, final String value)98     public void addHeader(final String name, final String value) {
99         if (name == null) {
100             throw new IllegalArgumentException("Header name may not be null");
101         }
102         this.headergroup.addHeader(new BasicHeader(name, value));
103     }
104 
105     // non-javadoc, see interface HttpMessage
setHeader(final Header header)106     public void setHeader(final Header header) {
107         this.headergroup.updateHeader(header);
108     }
109 
110     // non-javadoc, see interface HttpMessage
setHeader(final String name, final String value)111     public void setHeader(final String name, final String value) {
112         if (name == null) {
113             throw new IllegalArgumentException("Header name may not be null");
114         }
115         this.headergroup.updateHeader(new BasicHeader(name, value));
116     }
117 
118     // non-javadoc, see interface HttpMessage
setHeaders(final Header[] headers)119     public void setHeaders(final Header[] headers) {
120         this.headergroup.setHeaders(headers);
121     }
122 
123     // non-javadoc, see interface HttpMessage
removeHeader(final Header header)124     public void removeHeader(final Header header) {
125         this.headergroup.removeHeader(header);
126     }
127 
128     // non-javadoc, see interface HttpMessage
removeHeaders(final String name)129     public void removeHeaders(final String name) {
130         if (name == null) {
131             return;
132         }
133         for (Iterator i = this.headergroup.iterator(); i.hasNext(); ) {
134             Header header = (Header) i.next();
135             if (name.equalsIgnoreCase(header.getName())) {
136                 i.remove();
137             }
138         }
139     }
140 
141     // non-javadoc, see interface HttpMessage
headerIterator()142     public HeaderIterator headerIterator() {
143         return this.headergroup.iterator();
144     }
145 
146     // non-javadoc, see interface HttpMessage
headerIterator(String name)147     public HeaderIterator headerIterator(String name) {
148         return this.headergroup.iterator(name);
149     }
150 
151     // non-javadoc, see interface HttpMessage
getParams()152     public HttpParams getParams() {
153         if (this.params == null) {
154             this.params = new BasicHttpParams();
155         }
156         return this.params;
157     }
158 
159     // non-javadoc, see interface HttpMessage
setParams(final HttpParams params)160     public void setParams(final HttpParams params) {
161         if (params == null) {
162             throw new IllegalArgumentException("HTTP parameters may not be null");
163         }
164         this.params = params;
165     }
166 }
167