lucene/analysis/common/src/java/org/apache/lucene/analysis/pt/PortugueseMinimalStemmer.java

/*
 * 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.pt;


/**
 * Minimal Stemmer for Portuguese
 * <p>
 * This follows the "RSLP-S" algorithm presented in:
 * <i>A study on the Use of Stemming for Monolingual Ad-Hoc Portuguese
 * Information Retrieval</i> (Orengo, et al)
 * which is just the plural reduction step of the RSLP
 * algorithm from <i>A Stemming Algorithm for the Portuguese Language</i>,
 * Orengo et al.
 * @see RSLPStemmerBase
 */
public class PortugueseMinimalStemmer extends RSLPStemmerBase {
  
  private static final Step pluralStep = 
    parse(PortugueseMinimalStemmer.class, "portuguese.rslp").get("Plural");
  
  public int stem(char s[], int len) {
    return pluralStep.apply(s, len);
  }
}