1 package org.apache.lucene.analysis.payloads;
3 * Licensed to the Apache Software Foundation (ASF) under one or more
4 * contributor license agreements. See the NOTICE file distributed with
5 * this work for additional information regarding copyright ownership.
6 * The ASF licenses this file to You under the Apache License, Version 2.0
7 * (the "License"); you may not use this file except in compliance with
8 * the License. You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
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15 * See the License for the specific language governing permissions and
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20 import org.apache.lucene.analysis.TokenFilter;
21 import org.apache.lucene.analysis.TokenStream;
22 import org.apache.lucene.analysis.tokenattributes.PayloadAttribute;
23 import org.apache.lucene.analysis.tokenattributes.TypeAttribute;
24 import org.apache.lucene.index.Payload;
26 import java.io.IOException;
30 * Makes the {@link org.apache.lucene.analysis.Token#type()} a payload.
32 * Encodes the type using {@link String#getBytes(String)} with "UTF-8" as the encoding
35 public class TypeAsPayloadTokenFilter extends TokenFilter {
36 private final PayloadAttribute payloadAtt = addAttribute(PayloadAttribute.class);
37 private final TypeAttribute typeAtt = addAttribute(TypeAttribute.class);
39 public TypeAsPayloadTokenFilter(TokenStream input) {
45 public final boolean incrementToken() throws IOException {
46 if (input.incrementToken()) {
47 String type = typeAtt.type();
48 if (type != null && type.equals("") == false) {
49 payloadAtt.setPayload(new Payload(type.getBytes("UTF-8")));