1 package org.apache.lucene.queryParser.core.nodes;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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16 * See the License for the specific language governing permissions and
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20 import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
23 * A {@link NoTokenFoundQueryNode} is used if a term is convert into no tokens
24 * by the tokenizer/lemmatizer/analyzer (null).
26 public class NoTokenFoundQueryNode extends DeletedQueryNode {
28 private static final long serialVersionUID = 7332975497586993833L;
30 public NoTokenFoundQueryNode() {
35 public CharSequence toQueryString(EscapeQuerySyntax escaper) {
40 public String toString() {
41 return "<notokenfound/>";
45 public QueryNode cloneTree() throws CloneNotSupportedException {
46 NoTokenFoundQueryNode clone = (NoTokenFoundQueryNode) super.cloneTree();