/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat, Inc. and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jgroups.util;
/**
* Simple class that holds an immutable reference to another object (or to
* <code>null</code>).
*
* @author Brian Stansberry
*
*/
public class ImmutableReference<T> {
private final T referent;
/**
* Create a new ImmutableReference.
*
* @param referent the object to refer to, or <code>null</code>
*/
public ImmutableReference(T referent) {
this.referent = referent;
}
/**
* Gets the wrapped object, if there is one.
*
* @return the object passed to the constructor, or <code>null</code> if
* <code>null</code> was passed to the constructor
*/
public T get() {
return referent;
}
}