package org.apache.lucene.analysis.cjk;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
import java.util.Map;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.cjk.CJKBigramFilter;
import org.apache.lucene.analysis.util.TokenFilterFactory;
/**
* Factory for {@link CJKBigramFilter}.
* <pre class="prettyprint" >
* <fieldType name="text_cjk" class="solr.TextField">
* <analyzer>
* <tokenizer class="solr.StandardTokenizerFactory"/>
* <filter class="solr.CJKWidthFilterFactory"/>
* <filter class="solr.LowerCaseFilterFactory"/>
* <filter class="solr.CJKBigramFilterFactory"
* han="true" hiragana="true"
* katakana="true" hangul="true" outputUnigrams="false" />
* </analyzer>
* </fieldType></pre>
*/
public class CJKBigramFilterFactory extends TokenFilterFactory {
int flags;
boolean outputUnigrams;
@Override
public void init(Map<String,String> args) {
super.init(args);
flags = 0;
if (getBoolean("han", true)) {
flags |= CJKBigramFilter.HAN;
}
if (getBoolean("hiragana", true)) {
flags |= CJKBigramFilter.HIRAGANA;
}
if (getBoolean("katakana", true)) {
flags |= CJKBigramFilter.KATAKANA;
}
if (getBoolean("hangul", true)) {
flags |= CJKBigramFilter.HANGUL;
}
outputUnigrams = getBoolean("outputUnigrams", false);
}
@Override
public TokenStream create(TokenStream input) {
return new CJKBigramFilter(input, flags, outputUnigrams);
}
}