/*
* 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;
import gov.nist.javax.sip.address.*;
import java.text.ParseException;

/**
 * CallInfo SIPHeader.
 *
 *
 * @author "M. Ranganathan"  <br/>
 * @version 1.2 $Revision: 1.7 $ $Date: 2009/07/17 18:57:28 $
 * @since 1.1
 */
public final class CallInfo
    extends ParametersHeader
    implements javax.sip.header.CallInfoHeader {

    /**
     * Comment for <code>serialVersionUID</code>
     */
    private static final long serialVersionUID = -8179246487696752928L;

    protected GenericURI info;

    /**
     * Default constructor
     */
    public CallInfo() {
        super(CALL_INFO);
    }

    /**
     * Return canonical representation.
     * @return String
     */
    public String encodeBody() {
        return encodeBody(new StringBuffer()).toString();
    }

    protected StringBuffer encodeBody(StringBuffer buffer) {
        buffer.append(LESS_THAN);
        info.encode(buffer);
        buffer.append(GREATER_THAN);

        if (parameters != null && !parameters.isEmpty()) {
            buffer.append(SEMICOLON);
            parameters.encode(buffer);
        }

        return buffer;
    }

    /**
     * get the purpose field
     * @return String
     */
    public String getPurpose() {
        return this.getParameter("purpose");
    }

    /**
     * get the URI field
     * @return URI
     */
    public javax.sip.address.URI getInfo() {
        return info;
    }

    /**
     * set the purpose field
     * @param purpose is the purpose field.
     */
    public void setPurpose(String purpose) {
        if (purpose == null)
            throw new NullPointerException("null arg");
        try {
            this.setParameter("purpose", purpose);
        } catch (ParseException ex) {
        }
    }

    /**
     * set the URI field
     * @param info is the URI to set.
     */
    public void setInfo(javax.sip.address.URI info) {
        this.info = (GenericURI) info;
    }

    public Object clone() {
        CallInfo retval = (CallInfo) super.clone();
        if (this.info != null)
            retval.info = (GenericURI) this.info.clone();
        return retval;
    }
}