/**
* 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.web.datasource;
import java.util.List;
import org.structr.common.error.FrameworkException;
import org.structr.core.GraphObject;
import org.structr.core.entity.AbstractNode;
import org.structr.core.function.Functions;
import org.structr.web.common.GraphDataSource;
import org.structr.web.common.RenderContext;
import org.structr.web.entity.dom.DOMNode;
/**
*
*
*/
public class FunctionDataSource implements GraphDataSource<List<GraphObject>> {
@Override
public List<GraphObject> getData(final RenderContext renderContext, final AbstractNode referenceNode) throws FrameworkException {
final String functionQuery = referenceNode.getProperty(DOMNode.functionQuery);
if (functionQuery == null || functionQuery.isEmpty()) {
return null;
}
final Object result = Functions.evaluate(renderContext, referenceNode, functionQuery);
if (result instanceof List) {
return (List<GraphObject>)result;
}
return null;
}
}