mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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84841e063f
125788 rmunteanu: Merged 5.1.N (5.1.2) to 5.2.N (5.2.1)
125606 rmunteanu: Merged 5.1.1 (5.1.1) to 5.1.N (5.1.2)
125515 slanglois: MNT-16155 Update source headers - add new Copyrights for Java and JSP source files + automatic check in the build
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@127810 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
79 lines
2.2 KiB
Java
79 lines
2.2 KiB
Java
/*
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* #%L
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* Alfresco Repository
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* %%
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* Copyright (C) 2005 - 2016 Alfresco Software Limited
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* %%
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* This file is part of the Alfresco software.
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* If the software was purchased under a paid Alfresco license, the terms of
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* the paid license agreement will prevail. Otherwise, the software is
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* provided under the following open source license terms:
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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* #L%
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*/
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package org.alfresco.traitextender;
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import java.util.concurrent.ConcurrentHashMap;
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/**
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* Trait based extension reference holder.<br>
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* Keeps track of extension references for one extensible and allows the
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* collection of those extensions when the extensible is collected.
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*
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* @author Bogdan Horje
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*/
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public class ExtendedTrait<T extends Trait>
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{
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private ConcurrentHashMap<Class<?>, Object> extensions = new ConcurrentHashMap<Class<?>, Object>();
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private T trait;
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public ExtendedTrait(T trait)
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{
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super();
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this.trait = trait;
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}
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public T getTrait()
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{
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return trait;
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}
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public <E> E getExtension(Class<E> extensionAPI)
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{
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@SuppressWarnings("unchecked")
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E extension = (E) extensions.get(extensionAPI);
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return extension;
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}
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public synchronized <E> E extend(Class<E> extensionAPI, ExtensionFactory<E> factory)
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{
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@SuppressWarnings("unchecked")
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E extension = (E) extensions.get(extensionAPI);
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if (extension == null)
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{
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extension = factory.createExtension(trait);
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extensions.put(extensionAPI,
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extension);
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}
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return extension;
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}
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}
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