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
32package org.apache.http.message;
33
34import java.util.Iterator;
35
36import org.apache.http.Header;
37import org.apache.http.HeaderIterator;
38import org.apache.http.HttpMessage;
39import org.apache.http.params.HttpParams;
40import 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 */
51public abstract class AbstractHttpMessage implements HttpMessage {
52
53    protected HeaderGroup headergroup;
54
55    protected HttpParams params;
56
57    protected AbstractHttpMessage(final HttpParams params) {
58        super();
59        this.headergroup = new HeaderGroup();
60        this.params = params;
61    }
62
63    protected AbstractHttpMessage() {
64        this(null);
65    }
66
67    // non-javadoc, see interface HttpMessage
68    public boolean containsHeader(String name) {
69        return this.headergroup.containsHeader(name);
70    }
71
72    // non-javadoc, see interface HttpMessage
73    public Header[] getHeaders(final String name) {
74        return this.headergroup.getHeaders(name);
75    }
76
77    // non-javadoc, see interface HttpMessage
78    public Header getFirstHeader(final String name) {
79        return this.headergroup.getFirstHeader(name);
80    }
81
82    // non-javadoc, see interface HttpMessage
83    public Header getLastHeader(final String name) {
84        return this.headergroup.getLastHeader(name);
85    }
86
87    // non-javadoc, see interface HttpMessage
88    public Header[] getAllHeaders() {
89        return this.headergroup.getAllHeaders();
90    }
91
92    // non-javadoc, see interface HttpMessage
93    public void addHeader(final Header header) {
94        this.headergroup.addHeader(header);
95    }
96
97    // non-javadoc, see interface HttpMessage
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
106    public void setHeader(final Header header) {
107        this.headergroup.updateHeader(header);
108    }
109
110    // non-javadoc, see interface HttpMessage
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
119    public void setHeaders(final Header[] headers) {
120        this.headergroup.setHeaders(headers);
121    }
122
123    // non-javadoc, see interface HttpMessage
124    public void removeHeader(final Header header) {
125        this.headergroup.removeHeader(header);
126    }
127
128    // non-javadoc, see interface HttpMessage
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
142    public HeaderIterator headerIterator() {
143        return this.headergroup.iterator();
144    }
145
146    // non-javadoc, see interface HttpMessage
147    public HeaderIterator headerIterator(String name) {
148        return this.headergroup.iterator(name);
149    }
150
151    // non-javadoc, see interface HttpMessage
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
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