package org.apache.lucene.queryParser.core.nodes;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
import org.apache.lucene.queryParser.core.processors.RemoveDeletedQueryNodesProcessor;
/**
* A {@link DeletedQueryNode} represents a node that was deleted from the query
* node tree. It can be removed from the tree using the
* {@link RemoveDeletedQueryNodesProcessor} processor.
*/
public class DeletedQueryNode extends QueryNodeImpl {
private static final long serialVersionUID = -9151675506000425293L;
public DeletedQueryNode() {
// empty constructor
}
public CharSequence toQueryString(EscapeQuerySyntax escaper) {
return "[DELETEDCHILD]";
}
@Override
public String toString() {
return "<deleted/>";
}
@Override
public QueryNode cloneTree() throws CloneNotSupportedException {
DeletedQueryNode clone = (DeletedQueryNode) super.cloneTree();
return clone;
}
}