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      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 * Product of NIST/ITL Advanced Networking Technologies Division (ANTD)         *
     26 *******************************************************************************/
     27 package gov.nist.javax.sip.header;
     28 
     29 import java.text.ParseException;
     30 
     31 import gov.nist.javax.sip.address.*;
     32 import javax.sip.address.*;
     33 
     34 /**
     35  * AlertInfo SIP Header.
     36  *
     37  * @author M. Ranganathan   <br/>
     38  *
     39  * @since 1.1
     40  *
     41  * @version 1.2 $Revision: 1.8 $ $Date: 2009/07/17 18:57:25 $
     42  *
     43  *
     44  */
     45 public final class AlertInfo
     46     extends ParametersHeader
     47     implements javax.sip.header.AlertInfoHeader {
     48 
     49     /**
     50      * Comment for <code>serialVersionUID</code>
     51      */
     52     private static final long serialVersionUID = 4159657362051508719L;
     53     /** URI field
     54      */
     55     protected GenericURI uri;
     56     /** String field
     57      */
     58     protected String string;
     59 
     60     /** Constructor
     61      */
     62     public AlertInfo() {
     63         super(NAME);
     64     }
     65 
     66     /**
     67      * Return value encoding in canonical form.
     68      * @return The value of the header in canonical encoding.
     69      */
     70     protected String encodeBody() {
     71         StringBuffer encoding = new StringBuffer();
     72         if (uri != null) {
     73             encoding.append(LESS_THAN).append(uri.encode()).append(GREATER_THAN);
     74         } else if (string != null) {
     75             encoding.append(string);
     76         }
     77         if (!parameters.isEmpty()) {
     78             encoding.append(SEMICOLON).append(parameters.encode());
     79         }
     80         return encoding.toString();
     81     }
     82 
     83     /**
     84      * Set the uri member
     85      * @param uri URI to set
     86      */
     87     public void setAlertInfo(URI uri) {
     88         this.uri = (GenericURI) uri;
     89     }
     90 
     91     /**
     92      * Set the string member
     93      * @param string String to set
     94      */
     95     public void setAlertInfo(String string) {
     96         this.string = string;
     97     }
     98 
     99     /**
    100      * Returns the AlertInfo value of this AlertInfoHeader.
    101      * @return the URI representing the AlertInfo.
    102      */
    103     public URI getAlertInfo() {
    104         URI alertInfoUri = null;
    105 
    106         if (this.uri != null) {
    107             alertInfoUri = (URI) this.uri;
    108         } else {
    109             try {
    110                 alertInfoUri = (URI) new GenericURI(string);
    111             } catch (ParseException e) {
    112                 ;  // Eat the exception.
    113             }
    114         }
    115 
    116         return alertInfoUri;
    117     }
    118 
    119     public Object clone() {
    120         AlertInfo retval = (AlertInfo) super.clone();
    121         if (this.uri != null) {
    122             retval.uri = (GenericURI) this.uri.clone();
    123         } else if (this.string != null) {
    124             retval.string = this.string;
    125         }
    126         return retval;
    127     }
    128 }
    129