com.sun.hk2.component.ScopeInstance Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2007-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.hk2.component;
import org.jvnet.hk2.component.Inhabitant;
import org.jvnet.hk2.component.PreDestroy;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A particular instanciation of a {@link org.jvnet.hk2.component.Scope}.
*
*
* For example, for the "request scope", an instance
* of {@link ScopeInstance} is created for each request.
*
* @author Kohsuke Kawaguchi
* @see org.jvnet.hk2.component.Scope#current()
*/
@SuppressWarnings("unchecked")
public final class ScopeInstance implements PreDestroy {
private static final Logger logger = Logger.getLogger(ScopeInstance.class.getName());
/**
* Human readable scope instance name for debug assistance.
*/
public final String name;
private final Map backend;
public ScopeInstance(String name, Map backend) {
this.name = name;
this.backend = backend;
}
public ScopeInstance(Map backend) {
this.name = super.toString();
this.backend = backend;
}
public String toString() {
return name;
}
public T get(Inhabitant inhabitant) {
return (T) backend.get(inhabitant);
}
public T put(Inhabitant inhabitant, T value) {
return (T) backend.put(inhabitant,value);
}
public void release() {
synchronized(backend) {
for (Object o : backend.values()) {
if(o instanceof PreDestroy) {
logger.log(Level.FINER, "calling PreDestroy on {0}", o);
((PreDestroy)o).preDestroy();
}
}
backend.clear();
}
}
public void preDestroy() {
release();
}
}