package org.apache.lucene.analysis.pattern;
/*
* 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.io.Reader;
import java.util.Map;
import java.util.regex.Pattern;
import org.apache.lucene.analysis.CharFilter;
import org.apache.lucene.analysis.pattern.PatternReplaceCharFilter;
import org.apache.lucene.analysis.util.CharFilterFactory;
/**
* Factory for {@link PatternReplaceCharFilter}.
* <pre class="prettyprint" >
* <fieldType name="text_ptnreplace" class="solr.TextField" positionIncrementGap="100">
* <analyzer>
* <charFilter class="solr.PatternReplaceCharFilterFactory"
* pattern="([^a-z])" replacement=""/>
* <tokenizer class="solr.KeywordTokenizerFactory"/>
* </analyzer>
* </fieldType></pre>
*
*
* @since Solr 3.1
*/
public class PatternReplaceCharFilterFactory extends CharFilterFactory {
private Pattern p;
private String replacement;
private int maxBlockChars;
private String blockDelimiters;
@Override
public void init(Map<String, String> args) {
super.init( args );
p = getPattern("pattern");
replacement = args.get( "replacement" );
if( replacement == null )
replacement = "";
// TODO: warn if you set maxBlockChars or blockDelimiters ?
maxBlockChars = getInt( "maxBlockChars", PatternReplaceCharFilter.DEFAULT_MAX_BLOCK_CHARS );
blockDelimiters = args.get( "blockDelimiters" );
}
public CharFilter create(Reader input) {
return new PatternReplaceCharFilter( p, replacement, maxBlockChars, blockDelimiters, input );
}
}