/**
* Copyright (C) 2010-2014 Morgner UG (haftungsbeschränkt)
*
* 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 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 org.structr.common.PropertyView;
import org.structr.web.common.RelType;
import org.structr.core.GraphObject;
import org.structr.core.entity.AbstractNode;
import org.structr.websocket.message.WebSocketMessage;
//~--- JDK imports ------------------------------------------------------------
import java.util.*;
import org.neo4j.graphdb.Direction;
import org.structr.core.IterableAdapter;
import org.structr.core.graph.NodeInterface;
import org.structr.core.graph.RelationshipFactory;
import org.structr.core.graph.RelationshipInterface;
import org.structr.websocket.StructrWebSocket;
//~--- classes ----------------------------------------------------------------
/**
* Websocket command to return the children of the given node
*
* @author Axel Morgner
*/
public class ChildrenCommand extends AbstractCommand {
static {
StructrWebSocket.addCommand(ChildrenCommand.class);
}
@Override
public void processMessage(WebSocketMessage webSocketData) {
final RelationshipFactory factory = new RelationshipFactory(this.getWebSocket().getSecurityContext());
final AbstractNode node = getNode(webSocketData.getId());
if (node == null) {
return;
}
final Iterable<RelationshipInterface> rels = new IterableAdapter<>(node.getNode().getRelationships(RelType.CONTAINS, Direction.OUTGOING), factory);
final List<GraphObject> result = new LinkedList();
for (RelationshipInterface rel : rels) {
NodeInterface endNode = rel.getTargetNode();
if (endNode == null) {
continue;
}
result.add(endNode);
}
webSocketData.setView(PropertyView.Ui);
webSocketData.setResult(result);
// send only over local connection
getWebSocket().send(webSocketData, true);
}
//~--- get methods ----------------------------------------------------
@Override
public String getCommand() {
return "CHILDREN";
}
}