mirror of
https://github.com/Alfresco/alfresco-community-repo.git
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6afb44e712
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/BRANCHES/DEV/5.2.N/root@125788 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
81 lines
2.4 KiB
Java
81 lines
2.4 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.repo.content;
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import java.nio.channels.ReadableByteChannel;
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import org.alfresco.service.cmr.repository.ContentIOException;
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import org.alfresco.service.cmr.repository.ContentReader;
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import org.springframework.dao.ConcurrencyFailureException;
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/**
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* A blank reader for which <code>exists()</code> always returns false.
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*
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* @author Derek Hulley
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*/
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public class EmptyContentReader extends AbstractContentReader
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{
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/**
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* @param contentUrl the content URL
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*/
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public EmptyContentReader(String contentUrl)
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{
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super(contentUrl);
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}
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/**
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* @return Returns an instance of the this class
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*/
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@Override
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protected ContentReader createReader() throws ContentIOException
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{
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return new EmptyContentReader(this.getContentUrl());
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}
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@Override
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protected ReadableByteChannel getDirectReadableChannel() throws ContentIOException
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{
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// ALF-17708: If we got the contentdata from the transactional cache, there's a chance that eager cleaning can
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// remove the content from under our feet
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throw new ConcurrencyFailureException(getContentUrl() + " no longer exists");
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}
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public boolean exists()
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{
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return false;
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}
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public long getLastModified()
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{
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return 0L;
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}
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public long getSize()
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{
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return 0L;
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}
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}
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