/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.plugins.vfs;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamField;
import java.io.Serializable;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.ArrayList;
import org.jboss.virtual.VFS;
import org.jboss.virtual.VirtualFile;
/**
* A minimal way of serializing VirtualFiles.
*
* @author <a href="mailto:ales.justin@jboss.com">Ales Justin</a>
*/
public class VirtualFileSerializator implements Serializable
{
private static final long serialVersionUID = 1L;
private static final ObjectStreamField[] serialPersistentFields =
{
new ObjectStreamField("rootUrl", URL.class),
new ObjectStreamField("path", String.class),
};
/** Minimal info to get full vfs file structure */
private URL rootUrl;
private String path;
/** The root */
private transient VirtualFile file;
public VirtualFileSerializator()
{
}
public VirtualFileSerializator(VirtualFile file)
{
this.file = file;
}
/**
* Transform VirtualFileSerializators to VirtualFiles.
*
* @param serializators the serializators
* @return virtual files
* @throws IOException for any error
*/
public static List<VirtualFile> toVirtualFiles(List<VirtualFileSerializator> serializators) throws IOException
{
if (serializators == null)
return null;
if (serializators.isEmpty())
return Collections.emptyList();
List<VirtualFile> files = new ArrayList<VirtualFile>(serializators.size());
for (VirtualFileSerializator serializator : serializators)
files.add(serializator.getFile());
return files;
}
/**
* Transform VirtualFiles to VirtualFileSerializators.
*
* @param files the virtual files
* @return serializators
* @throws IOException for any error
*/
public static List<VirtualFileSerializator> toVirtualFileSerializators(List<VirtualFile> files) throws IOException
{
if (files == null)
return null;
if (files.isEmpty())
return Collections.emptyList();
List<VirtualFileSerializator> serializators = new ArrayList<VirtualFileSerializator>(files.size());
for (VirtualFile file : files)
serializators.add(new VirtualFileSerializator(file));
return serializators;
}
/**
* Get the virtual file.
*
* @return virtual file instance
* @throws IOException for any error
*/
@SuppressWarnings("deprecation")
public VirtualFile getFile() throws IOException
{
if (file == null)
{
VirtualFile root = VFS.getRoot(rootUrl);
file = root.findChild(path);
}
return file;
}
// write just url and path
private void writeObject(ObjectOutputStream out) throws IOException, URISyntaxException
{
URL url = rootUrl;
if (url == null)
{
VFS vfs = getFile().getVFS();
url = vfs.getRoot().toURL();
}
String pathName = path;
if (pathName == null)
pathName = getFile().getPathName();
ObjectOutputStream.PutField fields = out.putFields();
fields.put("rootUrl", url);
fields.put("path", pathName);
out.writeFields();
}
// read url and path
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException
{
ObjectInputStream.GetField fields = in.readFields();
rootUrl = (URL) fields.get("rootUrl", null);
path = (String) fields.get("path", null);
}
}