/**
* Copyright (C) 2010-2017 Structr GmbH
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.websocket.command;
import java.util.LinkedList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.structr.common.Permission;
import org.structr.common.SecurityContext;
import org.structr.common.error.FrameworkException;
import org.structr.core.app.App;
import org.structr.core.app.StructrApp;
import org.structr.core.entity.AbstractNode;
import org.structr.core.entity.LinkedTreeNode;
import org.structr.core.graph.NodeInterface;
import org.structr.core.graph.Tx;
import org.structr.web.entity.dom.DOMNode;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.message.MessageBuilder;
import org.structr.websocket.message.WebSocketMessage;
import org.w3c.dom.DOMException;
//~--- classes ----------------------------------------------------------------
/**
*
*
*/
public class DeleteNodeCommand extends AbstractCommand {
private static final Logger logger = LoggerFactory.getLogger(DeleteNodeCommand.class.getName());
static {
StructrWebSocket.addCommand(DeleteNodeCommand.class);
}
//~--- methods --------------------------------------------------------
@Override
public void processMessage(final WebSocketMessage webSocketData) {
final SecurityContext securityContext = getWebSocket().getSecurityContext();
final Boolean recursive = (Boolean) webSocketData.getNodeData().get("recursive");
final AbstractNode obj = getNode(webSocketData.getId());
if (obj != null) {
final App app = StructrApp.getInstance(securityContext);
try (final Tx tx = app.tx()) {
if (!(obj.isGranted(Permission.delete, getWebSocket().getSecurityContext()))) {
logger.warn("No delete permission for {} on {}", new Object[]{getWebSocket().getCurrentUser().toString(), obj.toString()});
getWebSocket().send(MessageBuilder.status().message("No delete permission").code(400).build(), true);
tx.success();
return;
}
} catch (FrameworkException ex) {
logger.warn("", ex);
}
if (Boolean.TRUE.equals(recursive)) {
// Remove all child nodes first
try {
final List<AbstractNode> filteredResults = new LinkedList();
if (obj instanceof DOMNode) {
DOMNode node = (DOMNode) obj;
filteredResults.addAll(DOMNode.getAllChildNodes(node));
} else if (obj instanceof LinkedTreeNode) {
LinkedTreeNode node = (LinkedTreeNode) obj;
filteredResults.addAll(node.getAllChildNodes());
}
for (NodeInterface node : filteredResults) {
app.delete(node);
}
} catch (FrameworkException fex) {
logger.warn("Exception occured", fex);
getWebSocket().send(MessageBuilder.status().code(fex.getStatus()).message(fex.getMessage()).build(), true);
} catch (DOMException dex) {
logger.warn("DOMException occured.", dex);
getWebSocket().send(MessageBuilder.status().code(422).message(dex.getMessage()).build(), true);
}
}
try {
app.delete(obj);
} catch (FrameworkException fex) {
logger.warn("Unable to delete node(s)", fex);
}
} else {
// Don't throw a 404. If node doesn't exist, it doesn't need to be removed,
// and everything is fine!.
//logger.warn("Node with id {} not found.", webSocketData.getId());
//getWebSocket().send(MessageBuilder.status().code(404).build(), true);
}
}
//~--- get methods ----------------------------------------------------
@Override
public String getCommand() {
return "DELETE";
}
}