package javax.megaco.association;



import java.io.Serializable;



public class EncodingFormat implements Serializable {



	/**

	 * Identifies the encoding format to the peer messages from the stack shall

	 * be text (ABNF format).

	 */

	public static final int M_TEXT = 0;

	/**

	 * Identifies the encoding format to the peer messages from the stack shall

	 * be binary (ASN.1 with BER format).

	 */

	public static final int M_ASN = 1;



	/**

	 * Identifies a EncodingFormat object that constructs the class with the

	 * constant M_TEXT. Since it is reference to static final object, it

	 * prevents further instantiation of the same object in the system.

	 */

	public static final EncodingFormat TEXT = new EncodingFormat(M_TEXT);

	/**

	 * Identifies a EncodingFormat object that constructs the class with the

	 * constant M_ASN. Since it is reference to static final object, it prevents

	 * further instantiation of the same object in the system.

	 */

	public static final EncodingFormat ASN = new EncodingFormat(M_ASN);



	private int encodingFormat = -1;



	private EncodingFormat(int encoding_format) {

		encodingFormat = encoding_format;

	}



	private Object readResolve() {

		return this.getObject(this.encodingFormat);

	}



	/**

	 * Returns reference of the EncodingFormat object that identifies the

	 * encoding format as value passed to this method.

	 * 

	 * @param value

	 *            - It is one of the possible values of the static constant that

	 *            this class provides.

	 * @return Returns reference of the EncodingFormat object.

	 * @throws IllegalArgumentException

	 *             - If the value passed to this method is invalid, then this

	 *             exception is raised.

	 */

	public static Object getObject(int value) throws IllegalArgumentException {

		switch (value) {



		case M_TEXT:

			return TEXT;

		case M_ASN:

			return ASN;

		default:

			throw new IllegalArgumentException("Wrogn value passed, there is no encoding with code: " + value);

		}

	}



	/**

	 * This method returns one of the static field constants defined in this

	 * class.

	 * 

	 * @return Returns an integer value that identifies the encoding format of

	 *         the association, which could to be one of ASN or TEXT.

	 */

	public int getEncodingFormat() {

		return this.encodingFormat;

	}



	@Override

	public String toString() {

		switch (this.encodingFormat) {



		case M_TEXT:

			return "EncodingFormat[TEXT]";

		case M_ASN:

			return "EncodingFormat[ASN]";

		default:

			return "EncodingFormat[" + this.encodingFormat + "]";

		}

	}



}