69 lines
2.4 KiB
Java
69 lines
2.4 KiB
Java
/*
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* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.beans.finder;
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import java.beans.PersistenceDelegate;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* This is utility class that provides functionality
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* to find a {@link PersistenceDelegate} for a JavaBean specified by its type.
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*
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* @since 1.7
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*
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* @author Sergey A. Malenkov
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*/
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public final class PersistenceDelegateFinder
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extends InstanceFinder<PersistenceDelegate> {
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private final Map<Class<?>, PersistenceDelegate> registry;
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public PersistenceDelegateFinder() {
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super(PersistenceDelegate.class, true, "PersistenceDelegate");
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this.registry = new HashMap<Class<?>, PersistenceDelegate>();
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}
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public void register(Class<?> type, PersistenceDelegate delegate) {
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synchronized (this.registry) {
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if (delegate != null) {
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this.registry.put(type, delegate);
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}
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else {
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this.registry.remove(type);
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}
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}
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}
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@Override
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public PersistenceDelegate find(Class<?> type) {
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PersistenceDelegate delegate;
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synchronized (this.registry) {
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delegate = this.registry.get(type);
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}
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return (delegate != null) ? delegate : super.find(type);
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}
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}
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