| /* |
| * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package com.sun.beans.finder; |
| |
| import java.beans.PersistenceDelegate; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * This is utility class that provides functionality |
| * to find a {@link PersistenceDelegate} for a JavaBean specified by its type. |
| * |
| * @since 1.7 |
| * |
| * @author Sergey A. Malenkov |
| */ |
| public final class PersistenceDelegateFinder |
| extends InstanceFinder<PersistenceDelegate> { |
| |
| private final Map<Class<?>, PersistenceDelegate> registry; |
| |
| public PersistenceDelegateFinder() { |
| super(PersistenceDelegate.class, true, "PersistenceDelegate"); |
| this.registry = new HashMap<Class<?>, PersistenceDelegate>(); |
| } |
| |
| public void register(Class<?> type, PersistenceDelegate delegate) { |
| synchronized (this.registry) { |
| if (delegate != null) { |
| this.registry.put(type, delegate); |
| } |
| else { |
| this.registry.remove(type); |
| } |
| } |
| } |
| |
| @Override |
| public PersistenceDelegate find(Class<?> type) { |
| PersistenceDelegate delegate; |
| synchronized (this.registry) { |
| delegate = this.registry.get(type); |
| } |
| return (delegate != null) ? delegate : super.find(type); |
| } |
| } |