/*
* Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.vfs;
import com.caucho.util.L10N;
import com.caucho.util.Log;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.io.IOException;
import java.util.Map;
import java.util.logging.Logger;
/**
* Adapts the JNDI to the Path API. The name separator is always '/'.
*
* @since Resin 1.2
*/
public class JndiPath extends FilesystemPath {
protected static final Logger log = Log.open(JndiPath.class);
protected static final L10N L = new L10N(JndiPath.class);
private Context parent;
/**
* Creates a new JndiPath root.
*/
public JndiPath()
{
super(null, "/", "/");
_root = this;
}
/**
* Create a new JndiPath with the given name.
*/
protected JndiPath(FilesystemPath root, String userPath, String path)
{
super(root, userPath, path);
}
/**
* Walking down the path just stores the new name in the created Path.
*
* @param userPath the string used in the <code>lookup</code> call.
* @param attributes any inherited attributes.
* @param path the normalized slash-separated path.
* @return a new JndiPath representing the new path.
*/
public Path fsWalk(String userPath,
Map<String,Object> attributes,
String path)
{
return new JndiPath(_root, userPath, path);
}
/**
* The scheme is always "jndi:".
*/
public String getScheme()
{
return "jndi";
}
/**
* Create a new subcontext
*/
public boolean mkdir()
throws IOException
{
try {
Context parent = getAllButLast(getPath());
parent.createSubcontext(getTail());
return true;
} catch (Exception e) {
throw new IOExceptionWrapper(e);
}
}
/**
* Returns the object bound at this path.
*/
public Object getObject()
throws IOException
{
try {
Context parent = getAllButLast(getPath());
return parent.lookup(getTail());
} catch (Exception e) {
throw new IOExceptionWrapper(e);
}
}
/**
* Sets the object bound at this path.
*
* @param value the new value
*/
public void setObject(Object value)
throws IOException
{
try {
Context parent = getAllButLast(getPath());
parent.rebind(getTail(), value);
} catch (Exception e) {
e.printStackTrace();
throw new IOExceptionWrapper(e);
}
}
/**
* Returns the context found by looking up all but the last segment
* of the path.
*
* @param path slash-separated path
* @return context of the parent path
*/
private Context getAllButLast(String path)
throws NamingException
{
if (parent != null)
return parent;
Context context = new InitialContext();
int head = 1;
int tail;
while ((tail = path.indexOf('/', head)) > 0) {
String section = path.substring(head, tail);
if (context == null)
throw new NamingException(L.l("null context for `{0}'", path));
context = (Context) context.lookup(section);
head = tail + 1;
}
parent = context;
return parent;
}
}