org.jxmpp.jid.parts.Resourcepart Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jxmpp-jid Show documentation

JID classes from JXMPP.

There is a newer version: 1.1.0

/**
 *
 * Copyright © 2014-2015 Florian Schmaus
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jxmpp.jid.parts;

import org.jxmpp.stringprep.XmppStringPrepUtil;
import org.jxmpp.stringprep.XmppStringprepException;

/**
 * A XMPP Resourcepart.
 *
 * @see RFC 6122 § 2.4. Resourcepart
 */
public class Resourcepart extends Part {

	/**
	 *
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * The empty resource part.
	 * 
	 * This empty resource part is the part that is represented by the empty String. This is useful in cases where you
	 * have a collection of Resourceparts that does not allow null values, but you want to deal with the
	 * "no resource" case.
	 * 
	 */
	public static final Resourcepart EMPTY = new Resourcepart("");

	private Resourcepart(String resource) {
		super(resource);
	}

	/**
	 * Get the {@link Resourcepart} representing the input String.
	 *
	 * @param resource the input String.
	 * @return the resource part.
	 * @throws XmppStringprepException if an error occurs.
	 */
	public static Resourcepart from(String resource) throws XmppStringprepException {
		resource = XmppStringPrepUtil.resourceprep(resource);
		// First prep the String, then assure the limits of the *result*
		assertNotLongerThan1023BytesOrEmpty(resource);
		return new Resourcepart(resource);
	}
}