/*
* eXist Open Source Native XML Database Copyright (C) 2001-04 Wolfgang M. Meier
* wolfgang@exist-db.org http://exist.sourceforge.net
*
* 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 program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
*/
package org.exist.xupdate;
import java.util.Map;
import org.exist.EXistException;
import org.exist.collections.triggers.TriggerException;
import org.exist.dom.AttrImpl;
import org.exist.dom.DocumentImpl;
import org.exist.dom.DocumentSet;
import org.exist.dom.ElementImpl;
import org.exist.dom.NodeImpl;
import org.exist.dom.QName;
import org.exist.dom.StoredNode;
import org.exist.security.Permission;
import org.exist.security.PermissionDeniedException;
import org.exist.storage.DBBroker;
import org.exist.storage.NotificationService;
import org.exist.storage.UpdateListener;
import org.exist.storage.txn.Txn;
import org.exist.util.LockException;
import org.exist.xquery.XPathException;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Implements an XUpdate rename operation.
*
* @author wolf
*/
public class Rename extends Modification {
/**
* @param broker
* @param docs
* @param namespaces
* @param variables
* @param selectStmt
*/
public Rename(DBBroker broker, DocumentSet docs, String selectStmt,
Map<String, String> namespaces, Map<String, Object> variables) {
super(broker, docs, selectStmt, namespaces, variables);
}
/*
* (non-Javadoc)
*
* @see org.exist.xupdate.Modification#process(org.exist.dom.DocumentSet)
*/
public long process(Txn transaction) throws PermissionDeniedException, LockException,
EXistException, XPathException, TriggerException {
final NodeList children = content;
if (children.getLength() == 0) {return 0;}
int modificationCount = 0;
try {
final StoredNode[] ql = selectAndLock(transaction);
NodeImpl parent;
final IndexListener listener = new IndexListener(ql);
final NotificationService notifier = broker.getBrokerPool().getNotificationService();
final String newName = children.item(0).getNodeValue();
for (int i = 0; i < ql.length; i++) {
final StoredNode node = ql[i];
final DocumentImpl doc = (DocumentImpl)node.getOwnerDocument();
if (!doc.getPermissions().validate(broker.getSubject(), Permission.WRITE)) {
throw new PermissionDeniedException("User '" + broker.getSubject().getName() + "' does not have permission to write to the document '" + doc.getDocumentURI() + "'!");
}
doc.getMetadata().setIndexListener(listener);
parent = (NodeImpl) node.getParentNode();
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
final ElementImpl newElem = new ElementImpl((ElementImpl) node);
newElem.setNodeName(new QName(newName, "", null));
parent.updateChild(transaction, node, newElem);
modificationCount++;
break;
case Node.ATTRIBUTE_NODE:
final AttrImpl newAttr = new AttrImpl((AttrImpl) node);
newAttr.setNodeName(new QName(newName, "", null));
parent.updateChild(transaction, node, newAttr);
modificationCount++;
break;
default:
throw new EXistException("unsupported node-type");
}
doc.getMetadata().clearIndexListener();
doc.getMetadata().setLastModified(System.currentTimeMillis());
modifiedDocuments.add(doc);
broker.storeXMLResource(transaction, doc);
notifier.notifyUpdate(doc, UpdateListener.UPDATE);
}
checkFragmentation(transaction, modifiedDocuments);
} finally {
unlockDocuments(transaction);
}
return modificationCount;
}
/*
* (non-Javadoc)
*
* @see org.exist.xupdate.Modification#getName()
*/
public String getName() {
return "rename";
}
}