package javax.megaco.message.descriptor;



import java.io.Serializable;





import javax.megaco.message.Descriptor;

import javax.megaco.message.DescriptorType;

import javax.megaco.pkg.PkgItemStr;

import javax.megaco.pkg.PkgPrptyItem;



/**

 * The class extends JAIN MEGACO Descriptor. This class describes the

 * termination state descriptor. It specifies the service state, event buffer

 * control and the package property values. Atleaset one of the above needs to

 * be specified for the termination state descriptor.

 */

public class TermStateDescriptor extends Descriptor implements Serializable {



	private ServiceState serviceState = null;

	private EventBufferCtrl evtBufferControl = null;

	private PkgPrptyItem[] pkgPrptyItems = null;

	private PkgItemStr[] prptyParamStr;



	/**

	 * Constructs a TermState Descriptor which may contain atleast one of

	 * service state, reserve value, reserve group and property param.

	 */

	public TermStateDescriptor() {

		super();

		super.descriptorId = DescriptorType.M_TERMINATION_STATE_DESC;

	}



	@Override

	public int getDescriptorId() {

		return super.descriptorId;

	}



	/**

	 * This method gets the service state for the termination state descriptor.

	 * This shall specify one of out of service or in service or test. When

	 * service state is not present, then this shall return value null.

	 * 

	 * @return Returns the object reference of type service state. If the

	 *         service state is not set then this shall return value null.

	 */

	public final int getServiceState() {



		return this.serviceState.getServiceState();

	}



	/**

	 * This method sets the service state with one of out of service or in

	 * service or test. When service state is not to be sent then this method

	 * would not be invoked.

	 * 

	 * @param serviceState

	 *            - Sets the object reference of the derived object of

	 *            ServiceState to specify one of out of service or in service or

	 *            test.

	 * @throws IllegalArgumentException

	 *             : This exception is raised if the reference of Service State

	 *             passed to this method is NULL.

	 */

	public final void setServiceState(ServiceState serviceState)



	throws IllegalArgumentException {

		if (serviceState == null) {

			throw new IllegalArgumentException("ServiceState must not be null.");

		}



		this.serviceState = serviceState;

	}



	/**

	 * This method gets the event buffer control for the termination state

	 * descriptor. This shall specify one of off or lock step. When event buffer

	 * control is not present, then this shall return value null.

	 * 

	 * @return Returns the object reference of type event buffer control. If the

	 *         event buffer control is not set then this shall return value nul.

	 */

	public final EventBufferCtrl getEvtBufferControl() {



		return this.evtBufferControl;

	}



	/**

	 * This method sets the event buffer control with one of off or lock step.

	 * When event buffer control is not to be sent then this method would not be

	 * invoked.

	 * 

	 * @param eventBufferControl

	 *            - Sets the object reference of the derived object of

	 *            EventBufferCtrl to specify one of off or lock step.

	 * @throws IllegalArgumentException

	 *             : This exception is raised if the reference of Event Buffer

	 *             Control passed to this method is NULL.

	 */

	public final void setEvtBufferControl(EventBufferCtrl eventBufferControl) throws IllegalArgumentException {



		if (eventBufferControl == null) {

			throw new IllegalArgumentException("EventBufferCtrl must not be null.");

		}

		this.evtBufferControl = eventBufferControl;

	}



	/**

	 * The method is used to get the vector of property param within the

	 * termination state descriptor. If this is not set then this method shall

	 * return a NULL value.

	 * 

	 * @return Returns the vector of object reference of type PkgPrptyItem. If

	 *         the package property item is not set then this shall return a

	 *         NULL value.

	 */

	public final PkgPrptyItem[] getMegacoPkgPrptyItem() {

		return this.pkgPrptyItems;

	}



	/**

	 * Sets the vector of type PkgPrptyItem in a termination state descriptor.

	 * If Megaco package property is not to be sent, then this method would not

	 * be called.

	 * 

	 * @param prptyParam

	 *            - The Megaco Property parameter specifying the property for

	 *            the termination in the command.

	 * @throws IllegalArgumentException

	 *             - if the parameters set for the property parameter are such

	 *             that the TermState Descriptor cannot be encoded.

	 */

	public final void setMegacoPkgPrptyItem(PkgPrptyItem[] prptyParam) throws IllegalArgumentException {



		// FIXME: add error checks

		if (prptyParam == null) {

			throw new IllegalArgumentException("PkgPrptyItem[] must not be null.");

		}

		if (prptyParam.length == 0) {

			throw new IllegalArgumentException("PkgPrptyItem[] must not be empty.");

		}

		this.pkgPrptyItems = prptyParam;



	}



	/**

	 * The method is used to get the vector of property param within the

	 * termination state descriptor. The property param returned in this case

	 * have package name, item name and associated parameters specified in the

	 * string format. If this is not set then this method shall return a NULL

	 * value.

	 * 

	 * @return Returns the vector of object reference of type PkgPrptyItem. If

	 *         the package property item is not set then this shall return a

	 *         NULL value.

	 */

	public final PkgItemStr[] getMegacoPkgItemStr() {

		return this.prptyParamStr;

	}



	/**

	 * Sets the vector of type PkgItemStr in a termination state descriptor. If

	 * Megaco package property is not to be sent, then this method would not be

	 * called. This method would invoked for the packages which have not been

	 * defined in javax.megaco.pkg package.

	 * 

	 * @param prptyParam

	 *            - The Megaco Property parameter specifying the property for

	 *            the termination in the command.

	 * @throws IllegalArgumentException

	 *             : This exception is raised if the reference of Package Item

	 *             string passed to this method is NULL.

	 */

	public final void setMegacoPkgItemStr(PkgItemStr[] prptyParamStr) throws IllegalArgumentException {

		// FIXME: add error checks

		if (prptyParamStr == null) {

			throw new IllegalArgumentException("PkgItemStr[] must not be null.");

		}

		if (prptyParamStr.length == 0) {

			throw new IllegalArgumentException("PkgItemStr[] must not be empty.");

		}

		this.prptyParamStr = prptyParamStr;

	}



}