/**
* Copyright 2014 National University of Ireland, Galway.
*
* This file is part of the SIREn project. Project and contact information:
*
* https://github.com/rdelbru/SIREn
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.sindice.siren.qparser.json.nodes;
import org.apache.lucene.queryparser.flexible.core.nodes.ModifierQueryNode;
import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode;
import org.apache.lucene.queryparser.flexible.core.parser.EscapeQuerySyntax;
import org.sindice.siren.qparser.json.parser.LevelPropertyParser;
/**
* This query node represents a descendant clause for a twig query and holds
* the associated level of the descendant clause. It has the
* same behaviour than {@link ModifierQueryNode}.
*/
public class DescendantQueryNode extends ModifierQueryNode {
public DescendantQueryNode(final QueryNode query, final Modifier mod, final int level) {
super(query, mod);
this.setTag(LevelPropertyParser.LEVEL_PROPERTY, level);
}
@Override
public CharSequence toQueryString(final EscapeQuerySyntax escapeSyntaxParser) {
throw new UnsupportedOperationException();
}
@Override
public String toString() {
return "<descendant operation='" + this.getModifier().toString() + "' " +
"level='" + this.getTag(LevelPropertyParser.LEVEL_PROPERTY) + "'>\n"
+ this.getChild().toString() + "\n</modifier>";
}
}