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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
package org.elasticsearch.index.analysis;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.payloads.*;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.IndexSettings;
/**
*
*/
public class DelimitedPayloadTokenFilterFactory extends AbstractTokenFilterFactory {
public static final char DEFAULT_DELIMITER = '|';
public static final PayloadEncoder DEFAULT_ENCODER = new FloatEncoder();
static final String ENCODING = "encoding";
static final String DELIMITER = "delimiter";
char delimiter;
PayloadEncoder encoder;
public DelimitedPayloadTokenFilterFactory(IndexSettings indexSettings, Environment env, String name,
Settings settings) {
super(indexSettings, name, settings);
String delimiterConf = settings.get(DELIMITER);
if (delimiterConf != null) {
delimiter = delimiterConf.charAt(0);
} else {
delimiter = DEFAULT_DELIMITER;
}
if (settings.get(ENCODING) != null) {
if (settings.get(ENCODING).equals("float")) {
encoder = new FloatEncoder();
} else if (settings.get(ENCODING).equals("int")) {
encoder = new IntegerEncoder();
} else if (settings.get(ENCODING).equals("identity")) {
encoder = new IdentityEncoder();
}
} else {
encoder = DEFAULT_ENCODER;
}
}
@Override
public TokenStream create(TokenStream tokenStream) {
DelimitedPayloadTokenFilter filter = new DelimitedPayloadTokenFilter(tokenStream, delimiter, encoder);
return filter;
}
}
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