/**
* 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.core.graph;
import org.neo4j.graphdb.*;
import org.structr.common.error.FrameworkException;
import org.structr.common.error.IdNotFoundToken;
//import org.structr.common.xpath.JXPathFinder;
//~--- JDK imports ------------------------------------------------------------
import java.util.logging.Level;
import java.util.logging.Logger;
import org.structr.core.entity.AbstractRelationship;
//~--- classes ----------------------------------------------------------------
/**
* Searches for a relationship in the database and return the result.
*
* @author Axel Morgner
*/
public class FindRelationshipCommand<T extends AbstractRelationship> extends NodeServiceCommand {
private static final Logger logger = Logger.getLogger(FindRelationshipCommand.class.getName());
//~--- methods --------------------------------------------------------
public T execute(Relationship relationship) throws FrameworkException {
GraphDatabaseService graphDb = (GraphDatabaseService) arguments.get("graphDb");
RelationshipFactory<T> relationshipFactory = new RelationshipFactory<T>(securityContext);
if (graphDb != null) {
return relationshipFactory.instantiate(relationship);
}
return (null);
}
public T execute(Long id) throws FrameworkException {
GraphDatabaseService graphDb = (GraphDatabaseService) arguments.get("graphDb");
RelationshipFactory<T> relationshipFactory = new RelationshipFactory<T>(securityContext);
if (graphDb != null) {
try {
return relationshipFactory.instantiate(graphDb.getRelationshipById(id));
} catch (NotFoundException nfe) {
logger.log(Level.WARNING, "Node with id {0} not found in database!", id);
throw new FrameworkException("FindRelationshipCommand", new IdNotFoundToken(id));
}
}
return null;
}
public T execute(String idString) throws FrameworkException {
GraphDatabaseService graphDb = (GraphDatabaseService) arguments.get("graphDb");
RelationshipFactory<T> relationshipFactory = new RelationshipFactory<T>(securityContext);
if (graphDb != null) {
// single string value, try to parse to long
try {
return relationshipFactory.instantiate(graphDb.getRelationshipById(Long.parseLong(idString)));
} catch (NumberFormatException ex) {
// failed :(
logger.log(Level.FINE, "Could not parse {0} to number", idString);
}
}
return null;
}
}