package javax.megaco.association;



import javax.megaco.AssociationEvent;



public class ModifyAssocReq extends AssociationEvent {



	protected SrvChngReason srvChangeReason = null;

	protected SrvChngMethod srvChngMethod = null;

	protected LocalAddr srvChngAddress = null;

	protected String srvChngMethodExtension = null;



	public ModifyAssocReq(Object source, int assocHandle) throws IllegalArgumentException {

		super(source, assocHandle);

		// TODO Auto-generated constructor stub

	}



	@Override

	public int getAssocOperIdentifier() {

		return AssocEventType.M_MODIFY_ASSOC_REQ;

	}



	/**

	 * Gets the integer value which identifies the service change reason. The

	 * stack would use the same ServiceChange Reason in the ServiceChange

	 * command request sent to peer.

	 * 

	 * @return Returns the integer value corresponding to the service change

	 *         reason. If the ServiceChangeReason is not set, then this method

	 *         would return value null. The possible values are field constants

	 *         defined for the class SrvChngReason.

	 */

	public SrvChngReason getSrvChangeReason() {

		// return srvChangeReason == null ? 0 : srvChangeReason

		// .getSrvChngReasonId();

		return srvChangeReason;

	}



	/**

	 * This method sets the service change reason. This parameter is required on

	 * if the application is MG. The MG stack would use the same ServiceChange

	 * Reason in the ServiceChange command request sent to peer MGC.

	 * 

	 * @param reason

	 *            - The object reference to ServiceChange Reason.

	 * @throws IllegalArgumentException

	 *             This exception is raised if the reference of Service Change

	 *             Reason passed to this method is NULL.

	 */

	public void setSrvChangeReason(SrvChngReason reason) throws IllegalArgumentException {

		if (reason == null) {

			throw new IllegalArgumentException("Change reason can not be null");

		}

		this.srvChangeReason = reason;

	}



	/**

	 * Gets the integer value which identifies the service change method. This

	 * parameter is required on if the application is MG. The MG stack would use

	 * the same ServiceChange Method in ServiceChange command request sent to

	 * peer MGC.

	 * 

	 * @return Returns the integer value corresponding to the service change

	 *         method. If the ServiceChangeMethod is not set, then this method

	 *         would return value null. The possible values are field constants

	 *         defined for the class SrvChngMethod.

	 */

	public SrvChngMethod getSrvChngMethod() {

		// return srvChngMethod == null ? 0 :

		// srvChngMethod.getSrvChngMethodId();

		return srvChngMethod;

	}



	/**

	 * This method sets the service change method. This parameter is required on

	 * if the application is MG. The MG stack would use the same ServiceChange

	 * Method in ServiceChange command request sent to peer MGC.

	 * 

	 * @param method

	 *            - The object reference to ServiceChange Method.

	 * @throws IllegalArgumentException

	 *             This exception is raised if the reference of Service Change

	 *             Reason passed to this method is NULL.

	 */

	public void setSrvChngMethod(SrvChngMethod method) throws IllegalArgumentException {

		if (method == null) {

			throw new IllegalArgumentException("Change method can not be null");

		}

		this.srvChngMethod = method;

	}



	/**

	 * Gets the object reference corresponding to the service change address.

	 * The stack would use the same ServiceChange Address in the ServiceChange

	 * command request sent to peer.

	 * 

	 * @return Returns the service change address. If the service change address

	 *         has not been specified for this class, then this method returns

	 *         NULL.

	 */

	public LocalAddr getSrvChngAddress() {

		return srvChngAddress;

	}



	/**

	 * This method sets the service change address. The stack would use the same

	 * ServiceChange Address in the ServiceChange command request sent to peer.

	 * 

	 * @param srvChngAddress

	 *            - The service change address.

	 * @throws IllegalArgumentException

	 *             This exception is raised if the service change address

	 *             specified is invalid.

	 */

	public void setSrvChngAddress(LocalAddr srvChngAddress) throws IllegalArgumentException {

		// FIXME: IllegalArgumentException

		this.srvChngAddress = srvChngAddress;

	}



	/**

	 * Gets the string value of the extended service change method.

	 * 

	 * 

	 * @return Returns string value of the extended service change method. This

	 *         is to be set only if the service change method is set to

	 *         {@link javax.megaco.association.SrvChngMethod.M_EXTENSION}.

	 * @throws javax.megaco.association.MethodExtensionException

	 *             javax.megaco.association.MethodExtensionException - Thrown if

	 *             service change method has not been set to

	 *             {@link javax.megaco.association.SrvChngMethod.M_EXTENSION}

	 */

	public java.lang.String getSrvChngMethodExtension() throws javax.megaco.association.MethodExtensionException, IllegalArgumentException {

		if (getSrvChngMethod() == null || getSrvChngMethod().getSrvChngMethodId() != SrvChngMethod.M_EXTENSION) {

			throw new MethodExtensionException("Changed Method is not equal to {@link javax.megaco.association.SrvChngMethod.M_EXTENSION}");

		}



		return this.srvChngMethodExtension;

	}



	/**

	 * This method sets the extended service change method. This needs to be set

	 * if and only if the service change method is

	 * {@link javax.megaco.association.SrvChngMethod.M_EXTENSION}.

	 * 

	 * @param extMethod

	 *            - The string value of the extended service change method.

	 * @throws javax.megaco.association.MethodExtensionException

	 *             - Thrown if service change method has not been set to

	 *             {@link javax.megaco.association.SrvChngMethod.M_EXTENSION}.

	 * @throws IllegalArgumentException

	 *             - Thrown if extension string does not follow the rules of the

	 *             extension parameter, e.g, should start with X+ or X- etc.

	 */

	public void setSrvChngMethod(java.lang.String extMethod) throws javax.megaco.association.MethodExtensionException, IllegalArgumentException {

		if (getSrvChngMethod() == null || getSrvChngMethod().getSrvChngMethodId() != SrvChngMethod.M_EXTENSION) {

			throw new MethodExtensionException("Changed Method is not equal to SrvChngMethod.{@link javax.megaco.association.SrvChngMethod.M_EXTENSION}");

		}

		// FIXME IllegalArgumentException - Thrown if extension

		// string does not follow the rules of the extension parameter, e.g,

		// should start with X+ or X- etc.



		this.srvChngMethodExtension = extMethod;

	}



}