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
75 lines
2.2 KiB
Java
75 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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/**
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* A singleton extension API implementor. The singleton extension continues to
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* exist after the extensible has been collected. The instance of this extension
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* is shared among {@link Extensible}s defining extension-points that this
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* extension is bound to.The {@link Trait} it requires is set at call-time on
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* the local thread.
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*
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* @author Bogdan Horje
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*/
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public abstract class SingletonExtension<E, T extends Trait>
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{
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private ThreadLocal<T> localTrait = new ThreadLocal<>();
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private Class<T> traitClass;
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public SingletonExtension(Class<T> traitClass)
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{
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super();
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this.traitClass = traitClass;
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}
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public boolean acceptsTrait(Object trait)
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{
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return trait != null && acceptsTraitClass(trait.getClass());
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}
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public boolean acceptsTraitClass(Class<?> aTraitClass)
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{
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return traitClass.isAssignableFrom(aTraitClass);
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}
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void setTrait(T trait)
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{
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localTrait.set(trait);
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}
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/**
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* @return the {@link Trait} instance of the current execution extension
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* call.
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*/
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protected T getTrait()
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{
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return localTrait.get();
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}
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}
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