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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13 * distributed under the License is distributed on an "AS IS" BASIS,
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15 * See the License for the specific language governing permissions and
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19 import org.apache.lucene.index.Payload;
21 import java.nio.ByteBuffer;
22 import java.nio.CharBuffer;
23 import java.nio.charset.Charset;
27 * Does nothing other than convert the char array to a byte array using the specified encoding.
30 public class IdentityEncoder extends AbstractEncoder implements PayloadEncoder{
32 protected Charset charset = Charset.forName("UTF-8");
34 /** @deprecated This field is no longer used. Use {@link #charset} instead. */
36 protected String charsetName = charset.name();
38 public IdentityEncoder() {
41 public IdentityEncoder(Charset charset) {
42 this.charset = charset;
43 // @deprecated, remove this in 4.0:
44 charsetName = charset.name();
48 public Payload encode(char[] buffer, int offset, int length) {
49 final ByteBuffer bb = charset.encode(CharBuffer.wrap(buffer, offset, length));
51 return new Payload(bb.array(), bb.arrayOffset() + bb.position(), bb.remaining());
53 // normally it should always have an array, but who knows?
54 final byte[] b = new byte[bb.remaining()];
56 return new Payload(b);