/*
* 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.collections.triggers.TriggerException;
import org.exist.dom.DocumentImpl;
import org.exist.security.Permission;
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.util.LockException;
import org.exist.xmldb.XmldbURI;
/**
* @author wolf
*/
public class Delete extends AbstractWebDAVMethod {
public Delete(BrokerPool pool) {
super(pool);
}
/* (non-Javadoc)
* @see org.exist.http.webdav.WebDAVMethod#process(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, org.exist.collections.Collection, org.exist.dom.DocumentImpl)
*/
public void process(User user, HttpServletRequest request,
HttpServletResponse response, XmldbURI path) throws ServletException, IOException {
DBBroker broker = null;
Collection collection = null;
DocumentImpl resource = null;
TransactionManager transact = pool.getTransactionManager();
Txn txn = transact.beginTransaction();
try {
broker = pool.get(user);
collection = broker.openCollection(path, Lock.WRITE_LOCK);
if(collection == null) {
XmldbURI collName = path.removeLastSegment();
XmldbURI docName = path.lastSegment();
LOG.debug("collection = " + collName + "; doc = " + docName);
collection = broker.openCollection(collName, Lock.WRITE_LOCK);
if(collection == null) {
transact.abort(txn);
LOG.debug("No resource or collection found for path: " + path);
response.sendError(HttpServletResponse.SC_NOT_FOUND, NOT_FOUND_ERR);
return;
}
resource = collection.getDocument(broker, docName);
if(resource == null) {
LOG.debug("No resource found for path: " + path);
transact.abort(txn);
response.sendError(HttpServletResponse.SC_NOT_FOUND, NOT_FOUND_ERR);
return;
}
}
if(!collection.getPermissions().validate(user, Permission.READ)) {
LOG.debug("Permission denied to read collection");
transact.abort(txn);
response.sendError(HttpServletResponse.SC_FORBIDDEN);
return;
}
//TODO : release collection lock here ?
if(resource == null) {
broker.removeCollection(txn, collection);
} else {
if(resource.getResourceType() == DocumentImpl.BINARY_FILE)
collection.removeBinaryResource(txn, broker, resource.getFileURI());
else
collection.removeXMLResource(txn, broker, resource.getFileURI());
}
transact.commit(txn);
} catch (EXistException e) {
transact.abort(txn);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e.getMessage());
} catch (PermissionDeniedException e) {
transact.abort(txn);
response.sendError(HttpServletResponse.SC_FORBIDDEN, e.getMessage());
} catch (LockException e) {
transact.abort(txn);
response.sendError(HttpServletResponse.SC_CONFLICT, e.getMessage());
} catch (TriggerException e) {
transact.abort(txn);
response.sendError(HttpServletResponse.SC_CONFLICT, e.getMessage());
} finally {
if(collection != null)
collection.release(Lock.WRITE_LOCK);
pool.release(broker);
}
response.setStatus(HttpServletResponse.SC_NO_CONTENT);
}
}