content: /*
  * Conditions Of Use
  *
  * This software was developed by employees of the National Institute of
  * Standards and Technology (NIST), an agency of the Federal Government.
  * Pursuant to title 15 Untied States Code Section 105, works of NIST
  * employees are not subject to copyright protection in the United States
  * and are considered to be in the public domain.  As a result, a formal
  * license is not needed to use the software.
  *
  * This software is provided by NIST as a service and is expressly
  * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
  * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
  * AND DATA ACCURACY.  NIST does not warrant or make any representations
  * regarding the use of the software or the results thereof, including but
  * not limited to the correctness, accuracy, reliability or usefulness of
  * the software.
  *
  * Permission to use this software is contingent upon your acceptance
  * of the terms of this agreement.
  *
  */
  /*******************************************************************************
  * Product of NIST/ITL Advanced Networking Technologies Division (ANTD).        *
  *******************************************************************************/
  package gov2.nist.javax2.sip.header;
  
  import javax2.sip.header.*;
  
  import java.text.ParseException;
  
  /**
   * the SIP-ETag header.
   *
   * @author Jeroen van Bemmel<br/>
   * @version 1.2 $Revision: 1.3 $ $Date: 2009/07/17 18:57:37 $
   * @since 1.2
   */
  public class SIPETag extends SIPHeader implements SIPETagHeader , ExtensionHeader{
  
      /**
       * Comment for <code>serialVersionUID</code>
       */
      private static final long serialVersionUID = 3837543366074322107L;
  
      /**
       * entity tag field
       */
      protected String entityTag;
  
      /** Default constructor
       */
      public SIPETag() {
          super(NAME);
      }
  
      public SIPETag( String tag ) throws ParseException {
          this();
          this.setETag( tag );
      }
  
  
      /**
       * Encode into canonical form.
       * @return String
       */
      public String encodeBody() {
          return entityTag;
      }
  
      /**
       * get the priority value.
       * @return String
       */
      public String getETag() {
          return entityTag;
      }
  
      /**
       * Set the priority member
       * @param etag String to set
       */
      public void setETag(String etag) throws ParseException {
          if (etag == null)
              throw new NullPointerException(
                  "JAIN-SIP Exception,"
                      + "SIP-ETag, setETag(), the etag parameter is null");
          this.entityTag = etag;
      }
  
      /**
       * This method needs to be added for backwards compatibility to
       * avoid ClassCast exception on V1.1 applications
       *
       * @see javax2.sip.header.ExtensionHeader#setValue(java.lang.String)
       */
      public void setValue(String value) throws ParseException {
          this.setETag(value);
  
      }
  }
  