/**
* 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 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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.structr.api.DatabaseService;
import org.structr.api.graph.Relationship;
import org.structr.common.error.FrameworkException;
import org.structr.core.entity.AbstractRelationship;
//~--- classes ----------------------------------------------------------------
/**
* Searches for a relationship in the database and return the result.
*
*
*/
public class FindRelationshipCommand<T extends AbstractRelationship> extends NodeServiceCommand {
private static final Logger logger = LoggerFactory.getLogger(FindRelationshipCommand.class.getName());
//~--- methods --------------------------------------------------------
public T execute(Relationship relationship) throws FrameworkException {
DatabaseService graphDb = (DatabaseService) arguments.get("graphDb");
RelationshipFactory<T> relationshipFactory = new RelationshipFactory<>(securityContext);
if (graphDb != null) {
return relationshipFactory.instantiate(relationship);
}
return (null);
}
public T execute(Long id) throws FrameworkException {
DatabaseService graphDb = (DatabaseService) arguments.get("graphDb");
RelationshipFactory<T> relationshipFactory = new RelationshipFactory<>(securityContext);
if (graphDb != null) {
return relationshipFactory.instantiate(graphDb.getRelationshipById(id));
}
return null;
}
public T execute(String idString) throws FrameworkException {
DatabaseService graphDb = (DatabaseService) arguments.get("graphDb");
RelationshipFactory<T> relationshipFactory = new RelationshipFactory<>(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.debug("Could not parse {} to number", idString);
}
}
return null;
}
}