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  /*
  * 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 gov.nist.javax.sip.header;
 
 
From SIP Header.

Author(s):
M. Ranganathan
Version:
1.2 $Revision: 1.9 $ $Date: 2009-07-17 18:57:31 $
Since:
1.1
 
 public final class From
     extends AddressParametersHeader
     implements javax.sip.header.FromHeader {

    
Comment for serialVersionUID
 
     private static final long serialVersionUID = -6312727234330643892L;

    
Default constructor
 
     public From() {
         super();
     }

    
Generate a FROM header from a TO header
 
     public From(To to) {
         super();
          = to.address;
          = to.parameters;
     }

    
Encode the header content into a String.

Returns:
String
 
     protected String encodeBody() {
         return encodeBody(new StringBuffer()).toString();
     }
 
     protected StringBuffer encodeBody(StringBuffer buffer) {
         if (.getAddressType() == .) {
             buffer.append();
         }
         .encode(buffer);
         if (.getAddressType() == .) {
             buffer.append();
         }
         if (!.isEmpty()) {
             buffer.append();
             .encode(buffer);
         }
         return buffer;
     }

    
Conveniance accessor function to get the hostPort field from the address. Warning -- this assumes that the embedded URI is a SipURL.

Returns:
hostport field
    public HostPort getHostPort() {
        return .getHostPort();
    }

    
Get the display name from the address.

Returns:
Display name
    public String getDisplayName() {
        return .getDisplayName();
    }

    
Get the tag parameter from the address parm list.

Returns:
tag field
    public String getTag() {
        if ( == null)
            return null;
        return getParameter(.);
    }

    
Boolean function

Returns:
true if the Tag exist
    public boolean hasTag() {
        return hasParameter(.);
    }

    
remove Tag member
    public void removeTag() {
    }

    
Set the address member

Parameters:
address Address to set
    public void setAddress(javax.sip.address.Address address) {
        this. = (AddressImpladdress;
    }

    
Set the tag member

Parameters:
t tag to set. From tags are mandatory.
    public void setTag(String tthrows ParseException {
        // JvB: check that it is a valid token
        Parser.checkToken(t);
        this.setParameter(.t);
    }

    
Get the user@host port string.
    public String getUserAtHostPort() {
        return .getUserAtHostPort();
    }
    public boolean equals(Object other) {
        return (other instanceof FromHeader) && super.equals(other);
    }
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