| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.codehaus.groovy.util; |
| |
| public class ManagedReference<T> implements Finalizable { |
| private static final ReferenceManager NULL_MANAGER = new ReferenceManager(null){}; |
| private final Reference<T,ManagedReference<T>> ref; |
| private final ReferenceManager manager; |
| |
| public ManagedReference(ReferenceType type, ReferenceManager rmanager, T value) { |
| if (rmanager==null) rmanager = NULL_MANAGER; |
| this.manager = rmanager; |
| this.ref = type.createReference(value, this, rmanager.getReferenceQueue()); |
| rmanager.afterReferenceCreation(ref); |
| } |
| |
| public ManagedReference(ReferenceBundle bundle, T value) { |
| this(bundle.getType(),bundle.getManager(),value); |
| } |
| |
| public final T get() { |
| return ref.get(); |
| } |
| |
| public final void clear() { |
| ref.clear(); |
| manager.removeStallEntries(); |
| } |
| |
| public void finalizeReference(){ |
| ref.clear(); |
| } |
| } |