/*
* 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.
*/
package org.apache.lucene.analysis.pattern;
import java.util.Map;
import java.util.regex.Pattern;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.util.TokenFilterFactory;
/**
* Factory for {@link PatternCaptureGroupTokenFilter}.
* <pre class="prettyprint">
* <fieldType name="text_ptncapturegroup" class="solr.TextField" positionIncrementGap="100">
* <analyzer>
* <tokenizer class="solr.KeywordTokenizerFactory"/>
* <filter class="solr.PatternCaptureGroupFilterFactory" pattern="([^a-z])" preserve_original="true"/>
* </analyzer>
* </fieldType></pre>
*
* @see PatternCaptureGroupTokenFilter
*/
public class PatternCaptureGroupFilterFactory extends TokenFilterFactory {
private Pattern pattern;
private boolean preserveOriginal = true;
public PatternCaptureGroupFilterFactory(Map<String,String> args) {
super(args);
pattern = getPattern(args, "pattern");
preserveOriginal = args.containsKey("preserve_original") ? Boolean.parseBoolean(args.get("preserve_original")) : true;
}
@Override
public PatternCaptureGroupTokenFilter create(TokenStream input) {
return new PatternCaptureGroupTokenFilter(input, preserveOriginal, pattern);
}
}