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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
*  
* .
* 
*/
package gov.nist.javax.sip.address;

import gov.nist.core.NameValueList;

import java.text.ParseException;
import java.util.Iterator;

/**
 * Implementation of the TelURL interface.
 *
 * @version 1.2 $Revision: 1.8 $ $Date: 2007/10/23 17:34:56 $
 *
 * @author M. Ranganathan  
 * 
 */
public class TelURLImpl
	extends GenericURI
	implements javax.sip.address.TelURL {

	
	private static final long serialVersionUID = 5873527320305915954L;

	protected String scheme;

	protected TelephoneNumber telephoneNumber;

	/** Creates a new instance of TelURLImpl */
	public TelURLImpl() {
		this.scheme = "tel";
	}

	/** Set the telephone number.
	 *@param telephoneNumber -- telephone number to set.
	 */

	public void setTelephoneNumber(TelephoneNumber telephoneNumber) {
		this.telephoneNumber = telephoneNumber;
	}

	/** Returns the value of the isdnSubAddress parameter, or null
	 * if it is not set.
	 *
	 * @return  the value of the isdnSubAddress parameter
	 */
	public String getIsdnSubAddress() {
		return telephoneNumber.getIsdnSubaddress();
	}

	/** Returns the value of the postDial parameter, or null if it
	 * is not set.
	 *
	 * @return  the value of the postDial parameter
	 */
	public String getPostDial() {
		return telephoneNumber.getPostDial();
	}

	/** Returns the value of the "scheme" of this URI, for example "sip", "sips"
	 * or "tel".
	 *
	 * @return the scheme paramter of the URI
	 */
	public String getScheme() {
		return this.scheme;
	}

	/** Returns true if this TelURL is global i.e. if the TelURI
	 * has a global phone user.
	 *
	 * @return true if this TelURL represents a global phone user,
	 * and false otherwise.
	 */
	public boolean isGlobal() {
		return telephoneNumber.isGlobal();
	}

	/** This method determines if this is a URI with a scheme of "sip" or "sips".
	 *
	 * @return true if the scheme is "sip" or "sips", false otherwise.
	 */
	public boolean isSipURI() {
		return false;
	}

	/** Sets phone user of this TelURL to be either global or local. The default
	 * value is false, hence the TelURL is defaulted to local.
	 *
	 * @param global - the boolean value indicating if the TelURL has a global
	 * phone user.
	 */
	public void setGlobal(boolean global) {
		this.telephoneNumber.setGlobal(global);
	}

	/** Sets ISDN subaddress of this TelURL. If a subaddress is present, it is
	 * appended to the phone number after ";isub=".
	 *
	 * @param isdnSubAddress - new value of the isdnSubAddress
	 * parameter
	 */
	public void setIsdnSubAddress(String isdnSubAddress) {
		this.telephoneNumber.setIsdnSubaddress(isdnSubAddress);
	}

	/** Sets post dial of this TelURL. The post-dial sequence describes what and
	 * when the local entity should send to the phone line.
	 *
	 * @param postDial - new value of the postDial parameter
	 */
	public void setPostDial(String postDial) {
		this.telephoneNumber.setPostDial(postDial);
	}

	/** 
	 * Set the telephone number.
	 * @param telephoneNumber long phone number to set.
	 */
	public void setPhoneNumber(String telephoneNumber) {
		this.telephoneNumber.setPhoneNumber(telephoneNumber);
	}

	/** Get the telephone number. 
	 *
	 *@return -- the telephone number.
	 */
	public String getPhoneNumber() {
		return this.telephoneNumber.getPhoneNumber();
	}

	/** Return the string encoding.
	 *
	 *@return -- the string encoding.
	 */
	public String toString() {
		return this.scheme + ":" + telephoneNumber.encode();
	}

	public String encode() {
		return encode(new StringBuffer()).toString();
	}

	public StringBuffer encode(StringBuffer buffer) {
		buffer.append(this.scheme).append(':');
		telephoneNumber.encode(buffer);
		return buffer;
	}

	/** Deep copy clone operation.
	*
	*@return -- a cloned version of this telephone number.
	*/
	public Object clone() {
		TelURLImpl retval = (TelURLImpl) super.clone();
		if (this.telephoneNumber != null)
			retval.telephoneNumber = (TelephoneNumber) this.telephoneNumber.clone();
		return retval;
	}

	public String getParameter(String parameterName) {
		return telephoneNumber.getParameter(parameterName);
	}

	public void setParameter(String name, String value) {
		telephoneNumber.setParameter(name, value);
	}

	public Iterator getParameterNames() {
		return telephoneNumber.getParameterNames();
	}
	
	public NameValueList getParameters() {
		return telephoneNumber.getParameters();
	}

	public void removeParameter(String name) {
		telephoneNumber.removeParameter(name);
	}

    /* (non-Javadoc)
     * @see javax.sip.address.TelURL#setPhoneContext(java.lang.String)
     */
    public void setPhoneContext(String phoneContext) throws ParseException {

    	// JvB: set (null) should be interpreted as 'remove'
    	if (phoneContext==null) {
    		this.removeParameter("phone-context");
    	} else {
    		this.setParameter("phone-context",phoneContext);
    	}        
    }

    /* (non-Javadoc)
     * @see javax.sip.address.TelURL#getPhoneContext()
     */
    public String getPhoneContext() {
        
        return this.getParameter("phone-context");
    }
}