/**

 * Start time:14:03:29 2009-01-30<br>

 * Project: mobicents-media-server-controllers<br>

 * 

 * @author <a href="mailto:baranowb@gmail.com">baranowb - Bartosz Baranowski

 *         </a>

 * @author <a href="mailto:brainslog@gmail.com"> Alexandre Mendonca </a>

 */

package javax.megaco.association;



import javax.megaco.AssociationEvent;

import javax.megaco.ErrorCode;



import javax.megaco.MethodInvocationException;

import javax.megaco.ReturnStatus;



public class DeleteTxnResp extends AssociationEvent {



	private int txnHandle = -1;

	protected ReturnStatus eventStatus = null;

	protected ErrorCode errorCode = null;



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

		super(source, assocHandle);

		// TODO Auto-generated constructor stub

	}



	public DeleteTxnResp(Object source, int assocHandle, int txnHandle) throws IllegalArgumentException {

		super(source, assocHandle);

		this.setTxnHandle(txnHandle);

	}



	@Override

	public final int getAssocOperIdentifier() {

		return AssocEventType.M_DELETE_TXN_RESP;

	}



	/**

	 * This method returns whether the delete transaction event was successful

	 * or not.

	 * 

	 * @return Returns an integer value that identifies whether the delete

	 *         transaction event issued earlier could be performed successfuly

	 *         or not. The values are field constants defined in class

	 *         ReturnStatus. If the returnStatus is not set, then this method

	 *         would return value null.

	 */

	public final ReturnStatus getEventStatus() {

		// return eventStatus == null ? 0 : eventStatus.getReturnStatus();

		return eventStatus;

	}



	/**

	 * This method sets the status of whether the processing of the delete

	 * transaction event was successful or not.

	 * 

	 * @param returnStatus

	 *            - The return status of the processing of the delete

	 *            transaction event. The static object corresponding to the

	 *            return status which are one of the derived classes of the

	 *            ReturnStatus shall be set.

	 * @throws IllegalArgumentException

	 *             This exception is raised if the reference of Return Status

	 *             passed to this method is NULL.

	 */

	public final void setEventStatus(ReturnStatus returnStatus) throws IllegalArgumentException {

		if (returnStatus == null)

			throw new IllegalArgumentException("Event status can not be null.");



		this.eventStatus = returnStatus;

	}



	/**

	 * This method returns the error code qualifying why the modify association

	 * event could not be processed successfuly.

	 * 

	 * @return Returns an integer value that identifies the error code

	 *         specifying why the execution of the modify association event

	 *         could not be successful. The possible values are field constants

	 *         defined for the class ErrorCode. If the error code is not set,

	 *         then this method would return value null.

	 * @throws IllegalStateException

	 *             - This exception would be raised if the return status is set

	 *             to M_SUCCESS, the error code is not set and hence should not

	 *             invoke this method.

	 */

	public final ErrorCode getErrorCode() throws IllegalStateException {

		if (getEventStatus() == null || getEventStatus().getReturnStatus() == ReturnStatus.M_SUCCESS) {

			throw new IllegalStateException("Event status is success or not set, error code is not premited.");

		}

		// return errorCode == null ? 0 : errorCode.getErrorCode();

		return errorCode;

	}



	/**

	 * This method sets the error code specifying why the delete transaction

	 * event could not be executed successfuly.

	 * 

	 * @param errorCode

	 *            - The error code correspondingto why the delete transaction

	 *            event could not be executed successfuly. The values are

	 *            defined in AssocEventType.

	 * @throws IllegalArgumentException

	 *             This exception would be raised in following conditions <br>

	 *             1. If the return status is not set to M_FAILURE, the error

	 *             code should not be set. <br>

	 *             2. If the error code is not valid for the DeleteTxnReq event.

	 */

	public final void setErrorCode(ErrorCode errorCode) throws IllegalArgumentException {

		if (errorCode == null)

			throw new IllegalArgumentException("Error code can not be null.");

		if (getEventStatus() == null || getEventStatus().getReturnStatus() != ReturnStatus.M_FAILURE) {

			throw new IllegalArgumentException("Event status is not failure or nto set, error code is not premited.");

		}

		this.errorCode = errorCode;

	}



	// FIXME those are nto defined in jdoc....



	/**

	 * Gets an object identifier that specifies the transaction identifier. If

	 * the transaction identifier is set to 0, then this would be the case when

	 * the transaction identifier is to represent all transactions.<br>

	 * <br>

	 * If the transaction identifier is not set, then this method returns 0,

	 * indicating all transactions.

	 * 

	 * @return Returns an integer value that specifies the transaction

	 *         identifier.

	 */

	public final int getTxnHandle() {

		if (txnHandle == -1)

			return 0;



		return txnHandle;



	}



	/**

	 * This method sets the transaction identifier. To delete all transactions,

	 * the transaction identifier is set to 0.

	 * 

	 * @param transactionHandle

	 *            A reference to transaction identifier.

	 * @throws IllegalArgumentException

	 *             This exception is raised if the value of transaction handle

	 *             passed to this method is less than 0.

	 */

	public final void setTxnHandle(int transactionHandle) throws IllegalArgumentException {



		if (transactionHandle < 0)

			throw new IllegalArgumentException("Txn Handle can not be less than zero");



		this.txnHandle = transactionHandle;

	}



}