org.jboss.modules.ref.StrongReference Maven / Gradle / Ivy
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* as indicated by the @author tags. See the copyright.txt file in the
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*
* 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,
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* 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.jboss.modules.ref;
/**
* A strong reference with an attachment. Since strong references are always reachable, a reaper may not be used.
*
* @param the reference value type
* @param the attachment type
*
* @author David M. Lloyd
*/
public class StrongReference implements Reference {
private volatile T value;
private final A attachment;
public StrongReference(final T value, final A attachment) {
this.value = value;
this.attachment = attachment;
}
public StrongReference(final T value) {
this(value, null);
}
public T get() {
return value;
}
public void clear() {
value = null;
}
public A getAttachment() {
return attachment;
}
public Type getType() {
return Type.STRONG;
}
public String toString() {
return "strong reference to " + String.valueOf(get());
}
}