/**
* 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.Arrays;
import java.util.Map;
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.Relation;
import org.structr.core.graph.RelationshipInterface;
import org.structr.core.graph.TransactionCommand;
import org.structr.websocket.StructrWebSocket;
import org.structr.websocket.message.MessageBuilder;
import org.structr.websocket.message.WebSocketMessage;
//~--- classes ----------------------------------------------------------------
/**
* Websocket command to create a relationship.
*
*
*/
public class CreateRelationshipCommand extends AbstractCommand {
static {
StructrWebSocket.addCommand(CreateRelationshipCommand.class);
}
@Override
public void processMessage(final WebSocketMessage webSocketData) {
final Map<String, Object> properties = webSocketData.getRelData();
final String sourceId = (String) properties.get("sourceId");
final String targetId = (String) properties.get("targetId");
final String relType = (String) properties.get("relType");
final AbstractNode sourceNode = getNode(sourceId);
final AbstractNode targetNode = getNode(targetId);
if ((sourceNode != null) && (targetNode != null)) {
final SecurityContext securityContext = getWebSocket().getSecurityContext();
final App app = StructrApp.getInstance(securityContext);
try {
final Class relationClass = StructrApp.getConfiguration().getRelationClassForCombinedType(sourceNode.getType(), relType, targetNode.getType());
getRelationshipTemplate(relationClass).ensureCardinality(securityContext, sourceNode, targetNode);
final RelationshipInterface rel = app.create(sourceNode, targetNode, relationClass);
TransactionCommand.registerRelCallback(rel, callback);
if (rel != null) {
webSocketData.setResult(Arrays.asList(rel));
getWebSocket().send(webSocketData, true);
}
} catch (FrameworkException t) {
getWebSocket().send(MessageBuilder.status().code(400).message(t.getMessage()).build(), true);
}
} else {
getWebSocket().send(MessageBuilder.status().code(400).message("The CREATE_RELATIONSHIP command needs source and target!").build(), true);
}
}
//~--- get methods ----------------------------------------------------
@Override
public String getCommand() {
return "CREATE_RELATIONSHIP";
}
// ----- private methods -----
private Relation getRelationshipTemplate(final Class entityClass) {
try {
return (Relation) entityClass.newInstance();
} catch (Throwable t) {
}
return null;
}
}