1 /*
2 * Conditions Of Use
3 *
4 * This software was developed by employees of the National Institute of
5 * Standards and Technology (NIST), an agency of the Federal Government.
6 * Pursuant to title 15 Untied States Code Section 105, works of NIST
7 * employees are not subject to copyright protection in the United States
8 * and are considered to be in the public domain.  As a result, a formal
9 * license is not needed to use the software.
10 *
11 * This software is provided by NIST as a service and is expressly
12 * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
13 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
14 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
15 * AND DATA ACCURACY.  NIST does not warrant or make any representations
16 * regarding the use of the software or the results thereof, including but
17 * not limited to the correctness, accuracy, reliability or usefulness of
18 * the software.
19 *
20 * Permission to use this software is contingent upon your acceptance
21 * of the terms of this agreement
22 *
23 * .
24 *
25 */
26 /*******************************************************************************
27 * Product of NIST/ITL Advanced Networking Technologies Division (ANTD).        *
28 *******************************************************************************/
29 package gov.nist.javax.sip.header;
30 
31 import java.util.ListIterator;
32 
33 import javax.sip.header.ExtensionHeader;
34 import javax.sip.header.Header;
35 
36 /**
37  * A generic extension header list.
38  * @version 1.2 $Revision: 1.8 $ $Date: 2009/07/17 18:57:30 $
39  * @since 1.1
40  */
41 public class ExtensionHeaderList extends SIPHeaderList<ExtensionHeaderImpl> {
42 
43 
44 
45     private static final long serialVersionUID = 4681326807149890197L;
46 
47 
48     public Object clone() {
49         ExtensionHeaderList retval = new ExtensionHeaderList(headerName);
50         retval.clonehlist(this.hlist);
51         return retval;
52     }
53     public ExtensionHeaderList(String hName) {
54         super( ExtensionHeaderImpl.class, hName);
55     }
56 
57     public ExtensionHeaderList() {
58         super(ExtensionHeaderImpl.class,null);
59     }
60 
61 
62     public String encode() {
63         StringBuffer retval = new StringBuffer();
64         ListIterator<ExtensionHeaderImpl> it = this.listIterator();
65         while(it.hasNext()) {
66            ExtensionHeaderImpl eh = (ExtensionHeaderImpl) it.next();
67            retval.append(eh.encode());
68         }
69         return retval.toString();
70     }
71 }
72