/*
BEGIN LICENSE BLOCK
Copyright 2010-2011, Heiko Mueller, Sam Lindley, James Cheney and
University of Edinburgh
This file is part of Database Wiki.
Database Wiki 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.
Database Wiki 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 Database Wiki. If not, see <http://www.gnu.org/licenses/>.
END LICENSE BLOCK
*/
package org.dbwiki.data.query.xpath;
/** Find all matching nodes for a relative XPath expression.
*
* @author hmueller
*
*/
import org.dbwiki.data.database.DatabaseElementNode;
import org.dbwiki.data.database.DatabaseGroupNode;
import org.dbwiki.data.query.handler.QueryNodeHandler;
public class RelativeXPathConsumer {
public void consume(DatabaseElementNode node, XPath targetPath, QueryNodeHandler consumer) {
if (targetPath.size() > 0) {
XPathComponent pathComponent = targetPath.firstElement();
DatabaseGroupNode group = (DatabaseGroupNode)node;
for (int iChild = 0; iChild < group.children().size(); iChild++) {
DatabaseElementNode childNode = group.children().get(iChild);
if (pathComponent.matches(childNode)) {
if (targetPath.size() == 1) {
consumer.handle(childNode);
} else {
new RelativeXPathConsumer().consume(childNode, targetPath.subpath(1), consumer);
}
}
}
} else {
consumer.handle(node);
}
}
}