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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
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package org.elasticsearch.index.analysis;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.hunspell.Dictionary;
import org.apache.lucene.analysis.hunspell.HunspellStemFilter;
import org.elasticsearch.ElasticsearchIllegalArgumentException;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.inject.assistedinject.Assisted;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.settings.IndexSettings;
import org.elasticsearch.indices.analysis.HunspellService;
import java.util.Locale;
@AnalysisSettingsRequired
public class HunspellTokenFilterFactory extends AbstractTokenFilterFactory {
private final Dictionary dictionary;
private final boolean dedup;
private final boolean longestOnly;
@Inject
public HunspellTokenFilterFactory(Index index, @IndexSettings Settings indexSettings, @Assisted String name, @Assisted Settings settings, HunspellService hunspellService) {
super(index, indexSettings, name, settings);
String locale = settings.get("locale", settings.get("language", settings.get("lang", null)));
if (locale == null) {
throw new ElasticsearchIllegalArgumentException("missing [locale | language | lang] configuration for hunspell token filter");
}
dictionary = hunspellService.getDictionary(locale);
if (dictionary == null) {
throw new ElasticsearchIllegalArgumentException(String.format(Locale.ROOT, "Unknown hunspell dictionary for locale [%s]", locale));
}
dedup = settings.getAsBoolean("dedup", true);
longestOnly = settings.getAsBoolean("longest_only", false);
}
@Override
public TokenStream create(TokenStream tokenStream) {
return new HunspellStemFilter(tokenStream, dictionary, dedup, longestOnly);
}
public boolean dedup() {
return dedup;
}
public boolean longestOnly() {
return longestOnly;
}
}