/*
* 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.miscellaneous;
import java.util.Map;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.util.TokenFilterFactory;
/**
* Factory for {@link CodepointCountFilter}.
* <pre class="prettyprint">
* <fieldType name="text_lngth" class="solr.TextField" positionIncrementGap="100">
* <analyzer>
* <tokenizer class="solr.WhitespaceTokenizerFactory"/>
* <filter class="solr.CodepointCountFilterFactory" min="0" max="1" />
* </analyzer>
* </fieldType></pre>
*/
public class CodepointCountFilterFactory extends TokenFilterFactory {
final int min;
final int max;
public static final String MIN_KEY = "min";
public static final String MAX_KEY = "max";
/** Creates a new CodepointCountFilterFactory */
public CodepointCountFilterFactory(Map<String, String> args) {
super(args);
min = requireInt(args, MIN_KEY);
max = requireInt(args, MAX_KEY);
if (!args.isEmpty()) {
throw new IllegalArgumentException("Unknown parameters: " + args);
}
}
@Override
public CodepointCountFilter create(TokenStream input) {
return new CodepointCountFilter(input, min, max);
}
}