/*
* eXist Open Source Native XML Database
* Copyright (C) 2001-06 The eXist Project
* http://exist-db.org
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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 library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.http.webdav.methods;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.exist.EXistException;
import org.exist.collections.Collection;
import org.exist.security.PermissionDeniedException;
import org.exist.security.User;
import org.exist.storage.BrokerPool;
import org.exist.storage.DBBroker;
import org.exist.storage.lock.Lock;
import org.exist.storage.txn.TransactionManager;
import org.exist.storage.txn.Txn;
import org.exist.xmldb.XmldbURI;
/**
* Implements the WebDAV MKCOL method.
*
* @author wolf
*/
public class Mkcol extends AbstractWebDAVMethod {
public Mkcol(BrokerPool pool) {
super(pool);
}
public void process(User user, HttpServletRequest request,
HttpServletResponse response, XmldbURI path) throws ServletException, IOException {
//String origPath = request.getPathInfo();
if(path == null || path.equals("")) {
response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED,
"no path specified");
return;
}
DBBroker broker = null;
Collection collection = null;
try {
broker = pool.get(user);
try {
collection = broker.openCollection(path, Lock.READ_LOCK);
if(collection != null) {
response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED,
"collection " + request.getPathInfo() + " already exists");
return;
}
} finally {
if (collection != null)
collection.release(Lock.READ_LOCK);
}
XmldbURI parentURI = path.removeLastSegment();
if(parentURI==null)
parentURI = XmldbURI.ROOT_COLLECTION_URI;
XmldbURI collURI = path.lastSegment();
try {
collection = broker.openCollection(parentURI, Lock.WRITE_LOCK);
if(collection == null) {
LOG.debug("Parent collection " + parentURI + " not found");
response.sendError(HttpServletResponse.SC_CONFLICT,
"Parent collection not found");
return;
}
if(collection.hasDocument(collURI)) {
response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED,
"path conflicts with an existing resource");
return;
}
} finally {
if (collection != null)
collection.release(Lock.WRITE_LOCK);
}
TransactionManager transact = pool.getTransactionManager();
Txn txn = transact.beginTransaction();
try {
Collection created = broker.getOrCreateCollection(txn, path);
broker.saveCollection(txn, created);
broker.flush();
transact.commit(txn);
} catch(PermissionDeniedException e) {
transact.abort(txn);
response.sendError(HttpServletResponse.SC_FORBIDDEN,
e.getMessage());
}
LOG.debug("Created collection " + path);
response.setStatus(HttpServletResponse.SC_CREATED);
} catch(EXistException e) {
throw new ServletException("Database error: " + e.getMessage(), e);
} finally {
pool.release(broker);
}
}
}