/**
* 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 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 General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.rest.resource;
import org.structr.core.Result;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.http.HttpServletRequest;
import org.structr.core.property.PropertyKey;
import org.structr.common.SecurityContext;
import org.structr.common.error.FrameworkException;
import org.structr.core.GraphObject;
import org.structr.core.entity.AbstractRelationship;
import org.structr.rest.RestMethodResult;
import org.structr.rest.exception.IllegalPathException;
/**
*
* @author Christian Morgner
*/
public class RelationshipNodeResource extends WrappingResource {
private static final Logger logger = Logger.getLogger(RelationshipNodeResource.class.getName());
private boolean startNode = false;
@Override
public boolean checkAndConfigure(String part, SecurityContext securityContext, HttpServletRequest request) {
this.securityContext = securityContext;
// only "start" selects the start node, everything else means end node
if("start".equals(part.toLowerCase())) {
startNode = true;
}
return true;
}
@Override
public Result doGet(PropertyKey sortKey, boolean sortDescending, int pageSize, int page, String offsetId) throws FrameworkException {
List<? extends GraphObject> results = wrappedResource.doGet(sortKey, sortDescending, pageSize, page, offsetId).getResults();
if(results != null && !results.isEmpty()) {
try {
List<GraphObject> resultList = new LinkedList<GraphObject>();
for(GraphObject obj : results) {
if(obj instanceof AbstractRelationship) {
AbstractRelationship rel = (AbstractRelationship)obj;
if(startNode) {
resultList.add(rel.getSourceNode());
} else {
resultList.add(rel.getTargetNode());
}
}
}
return new Result(resultList, null, isCollectionResource(), isPrimitiveArray());
} catch(Throwable t) {
logger.log(Level.WARNING, "Exception while fetching relationships", t);
}
} else {
logger.log(Level.INFO, "No results from parent..");
}
throw new IllegalPathException();
}
@Override
public RestMethodResult doPost(Map<String, Object> propertySet) throws FrameworkException {
if(wrappedResource != null) {
return wrappedResource.doPost(propertySet);
}
throw new IllegalPathException();
}
@Override
public Resource tryCombineWith(Resource next) throws FrameworkException {
return super.tryCombineWith(next);
}
@Override
public String getResourceSignature() {
return getUriPart();
}
}