/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.deployers.vfs.spi.structure.modified;
import org.jboss.virtual.VirtualFile;
import org.jboss.virtual.VisitorAttributes;
/**
* Synch on update and delete file visitor.
*
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public class UpdateDeleteVisitor extends SynchVisitor
{
private VirtualFile originalRoot;
private String initialPath;
public UpdateDeleteVisitor(VisitorAttributes attributes, StructureCache<Long> cache, SynchAdapter synchAdapter, VirtualFile originalRoot)
{
super(attributes, cache, synchAdapter);
if (originalRoot == null)
throw new IllegalArgumentException("Null original root");
this.originalRoot = originalRoot;
initialPath = originalRoot.getPathName();
if (initialPath.endsWith("/") == false)
initialPath += "/";
}
protected void doVisit(VirtualFile file) throws Exception
{
String pathName = file.getPathName();
String originalPathName = initialPath + pathName;
VirtualFile child = originalRoot.getChild(pathName);
if (child == null)
{
// original was deleted, try deleting the temp
if (getSynchAdapter().delete(file))
{
getCache().removeCache(originalPathName);
}
}
else
{
Long previous = getCache().getCacheValue(originalPathName);
long lastModified = child.getLastModified();
boolean updateCache = false;
if (previous == null)
{
updateCache = true;
}
else if (lastModified > previous)
{
lastModified = getSynchAdapter().update(file, child);
updateCache = true;
}
if (updateCache)
{
getCache().putCacheValue(originalPathName, lastModified);
}
}
}
}