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Lucene example source code file (FrenchAnalyzer.java)
The Lucene FrenchAnalyzer.java source codepackage org.apache.lucene.analysis.fr; /** * 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 org.apache.lucene.analysis.Analyzer; import org.apache.lucene.analysis.CharArraySet; import org.apache.lucene.analysis.LowerCaseFilter; import org.apache.lucene.analysis.KeywordMarkerFilter; import org.apache.lucene.analysis.StopFilter; import org.apache.lucene.analysis.StopwordAnalyzerBase; import org.apache.lucene.analysis.TokenStream; import org.apache.lucene.analysis.Tokenizer; import org.apache.lucene.analysis.WordlistLoader; import org.apache.lucene.analysis.snowball.SnowballFilter; import org.apache.lucene.analysis.standard.StandardFilter; import org.apache.lucene.analysis.standard.StandardTokenizer; import org.apache.lucene.analysis.standard.StandardAnalyzer; // for javadoc import org.apache.lucene.util.Version; import java.io.File; import java.io.IOException; import java.io.Reader; import java.util.Arrays; import java.util.HashSet; import java.util.Collections; import java.util.Map; import java.util.Set; /** * {@link Analyzer} for French language. * <p> * Supports an external list of stopwords (words that * will not be indexed at all) and an external list of exclusions (word that will * not be stemmed, but indexed). * A default set of stopwords is used unless an alternative list is specified, but the * exclusion list is empty by default. * </p> * * <a name="version"/> * <p>You must specify the required {@link Version} * compatibility when creating FrenchAnalyzer: * <ul> * <li> As of 3.1, Snowball stemming is done with SnowballFilter, * LowerCaseFilter is used prior to StopFilter, and ElisionFilter and * Snowball stopwords are used by default. * <li> As of 2.9, StopFilter preserves position * increments * </ul> * * <p>NOTE: This class uses the same {@link Version} * dependent settings as {@link StandardAnalyzer}.</p> */ public final class FrenchAnalyzer extends StopwordAnalyzerBase { /** * Extended list of typical French stopwords. * @deprecated use {@link #getDefaultStopSet()} instead */ @Deprecated public final static String[] FRENCH_STOP_WORDS = { "a", "afin", "ai", "ainsi", "après", "attendu", "au", "aujourd", "auquel", "aussi", "autre", "autres", "aux", "auxquelles", "auxquels", "avait", "avant", "avec", "avoir", "c", "car", "ce", "ceci", "cela", "celle", "celles", "celui", "cependant", "certain", "certaine", "certaines", "certains", "ces", "cet", "cette", "ceux", "chez", "ci", "combien", "comme", "comment", "concernant", "contre", "d", "dans", "de", "debout", "dedans", "dehors", "delà", "depuis", "derrière", "des", "désormais", "desquelles", "desquels", "dessous", "dessus", "devant", "devers", "devra", "divers", "diverse", "diverses", "doit", "donc", "dont", "du", "duquel", "durant", "dès", "elle", "elles", "en", "entre", "environ", "est", "et", "etc", "etre", "eu", "eux", "excepté", "hormis", "hors", "hélas", "hui", "il", "ils", "j", "je", "jusqu", "jusque", "l", "la", "laquelle", "le", "lequel", "les", "lesquelles", "lesquels", "leur", "leurs", "lorsque", "lui", "là", "ma", "mais", "malgré", "me", "merci", "mes", "mien", "mienne", "miennes", "miens", "moi", "moins", "mon", "moyennant", "même", "mêmes", "n", "ne", "ni", "non", "nos", "notre", "nous", "néanmoins", "nôtre", "nôtres", "on", "ont", "ou", "outre", "où", "par", "parmi", "partant", "pas", "passé", "pendant", "plein", "plus", "plusieurs", "pour", "pourquoi", "proche", "près", "puisque", "qu", "quand", "que", "quel", "quelle", "quelles", "quels", "qui", "quoi", "quoique", "revoici", "revoilà", "s", "sa", "sans", "sauf", "se", "selon", "seront", "ses", "si", "sien", "sienne", "siennes", "siens", "sinon", "soi", "soit", "son", "sont", "sous", "suivant", "sur", "ta", "te", "tes", "tien", "tienne", "tiennes", "tiens", "toi", "ton", "tous", "tout", "toute", "toutes", "tu", "un", "une", "va", "vers", "voici", "voilà", "vos", "votre", "vous", "vu", "vôtre", "vôtres", "y", "à", "ça", "ès", "été", "être", "ô" }; /** File containing default French stopwords. */ public final static String DEFAULT_STOPWORD_FILE = "french_stop.txt"; /** * Contains words that should be indexed but not stemmed. */ private Set<?> excltable = Collections. |
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