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* Licensed to Elasticsearch under one or more contributor
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* 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.Analyzer;
import org.apache.lucene.analysis.CharArraySet;
import org.elasticsearch.common.ParseField;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.IndexSettings;
/**
* Builds an OpenRefine Fingerprint analyzer. Uses the default settings from the various components
* (Standard Tokenizer and lowercase + stop + fingerprint + ascii-folding filters)
*/
public class FingerprintAnalyzerProvider extends AbstractIndexAnalyzerProvider<Analyzer> {
public static ParseField MAX_OUTPUT_SIZE = FingerprintTokenFilterFactory.MAX_OUTPUT_SIZE;
public static int DEFAULT_MAX_OUTPUT_SIZE = FingerprintTokenFilterFactory.DEFAULT_MAX_OUTPUT_SIZE;
public static CharArraySet DEFAULT_STOP_WORDS = CharArraySet.EMPTY_SET;
private final FingerprintAnalyzer analyzer;
public FingerprintAnalyzerProvider(IndexSettings indexSettings, Environment env, String name, Settings settings) {
super(indexSettings, name, settings);
char separator = FingerprintTokenFilterFactory.parseSeparator(settings);
int maxOutputSize = settings.getAsInt(MAX_OUTPUT_SIZE.getPreferredName(),DEFAULT_MAX_OUTPUT_SIZE);
CharArraySet stopWords = Analysis.parseStopWords(env, indexSettings.getIndexVersionCreated(), settings, DEFAULT_STOP_WORDS);
this.analyzer = new FingerprintAnalyzer(stopWords, separator, maxOutputSize);
}
@Override
public FingerprintAnalyzer get() {
return analyzer;
}
}