+++ /dev/null
-package 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><b>NOTE</b>: 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.<Object>emptySet();
-
- /**
- * Returns an unmodifiable instance of the default stop-words set.
- * @return an unmodifiable instance of the default stop-words set.
- */
- public static Set<?> getDefaultStopSet(){
- return DefaultSetHolder.DEFAULT_STOP_SET;
- }
-
- private static class DefaultSetHolder {
- /** @deprecated remove this in Lucene 5.0 */
- @Deprecated
- static final Set<?> DEFAULT_STOP_SET_30 = CharArraySet
- .unmodifiableSet(new CharArraySet(Version.LUCENE_CURRENT, Arrays.asList(FRENCH_STOP_WORDS),
- false));
- static final Set<?> DEFAULT_STOP_SET;
- static {
- try {
- DEFAULT_STOP_SET =
- WordlistLoader.getSnowballWordSet(SnowballFilter.class, DEFAULT_STOPWORD_FILE);
- } catch (IOException ex) {
- // default set should always be present as it is part of the
- // distribution (JAR)
- throw new RuntimeException("Unable to load default stopword set");
- }
- }
- }
-
- /**
- * Builds an analyzer with the default stop words ({@link #getDefaultStopSet}).
- */
- public FrenchAnalyzer(Version matchVersion) {
- this(matchVersion,
- matchVersion.onOrAfter(Version.LUCENE_31) ? DefaultSetHolder.DEFAULT_STOP_SET
- : DefaultSetHolder.DEFAULT_STOP_SET_30);
- }
-
- /**
- * Builds an analyzer with the given stop words
- *
- * @param matchVersion
- * lucene compatibility version
- * @param stopwords
- * a stopword set
- */
- public FrenchAnalyzer(Version matchVersion, Set<?> stopwords){
- this(matchVersion, stopwords, CharArraySet.EMPTY_SET);
- }
-
- /**
- * Builds an analyzer with the given stop words
- *
- * @param matchVersion
- * lucene compatibility version
- * @param stopwords
- * a stopword set
- * @param stemExclutionSet
- * a stemming exclusion set
- */
- public FrenchAnalyzer(Version matchVersion, Set<?> stopwords,
- Set<?> stemExclutionSet) {
- super(matchVersion, stopwords);
- this.excltable = CharArraySet.unmodifiableSet(CharArraySet
- .copy(matchVersion, stemExclutionSet));
- }
-
-
- /**
- * Builds an analyzer with the given stop words.
- * @deprecated use {@link #FrenchAnalyzer(Version, Set)} instead
- */
- @Deprecated
- public FrenchAnalyzer(Version matchVersion, String... stopwords) {
- this(matchVersion, StopFilter.makeStopSet(matchVersion, stopwords));
- }
-
- /**
- * Builds an analyzer with the given stop words.
- * @throws IOException
- * @deprecated use {@link #FrenchAnalyzer(Version, Set)} instead
- */
- @Deprecated
- public FrenchAnalyzer(Version matchVersion, File stopwords) throws IOException {
- this(matchVersion, WordlistLoader.getWordSet(stopwords));
- }
-
- /**
- * Builds an exclusionlist from an array of Strings.
- * @deprecated use {@link #FrenchAnalyzer(Version, Set, Set)} instead
- */
- @Deprecated
- public void setStemExclusionTable(String... exclusionlist) {
- excltable = StopFilter.makeStopSet(matchVersion, exclusionlist);
- setPreviousTokenStream(null); // force a new stemmer to be created
- }
-
- /**
- * Builds an exclusionlist from a Map.
- * @deprecated use {@link #FrenchAnalyzer(Version, Set, Set)} instead
- */
- @Deprecated
- public void setStemExclusionTable(Map<?,?> exclusionlist) {
- excltable = new HashSet<Object>(exclusionlist.keySet());
- setPreviousTokenStream(null); // force a new stemmer to be created
- }
-
- /**
- * Builds an exclusionlist from the words contained in the given file.
- * @throws IOException
- * @deprecated use {@link #FrenchAnalyzer(Version, Set, Set)} instead
- */
- @Deprecated
- public void setStemExclusionTable(File exclusionlist) throws IOException {
- excltable = new HashSet<Object>(WordlistLoader.getWordSet(exclusionlist));
- setPreviousTokenStream(null); // force a new stemmer to be created
- }
-
- /**
- * Creates
- * {@link org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents}
- * used to tokenize all the text in the provided {@link Reader}.
- *
- * @return {@link org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents}
- * built from a {@link StandardTokenizer} filtered with
- * {@link StandardFilter}, {@link ElisionFilter},
- * {@link LowerCaseFilter}, {@link StopFilter},
- * {@link KeywordMarkerFilter} if a stem exclusion set is
- * provided, and {@link SnowballFilter}
- */
- @Override
- protected TokenStreamComponents createComponents(String fieldName,
- Reader reader) {
- if (matchVersion.onOrAfter(Version.LUCENE_31)) {
- final Tokenizer source = new StandardTokenizer(matchVersion, reader);
- TokenStream result = new StandardFilter(matchVersion, source);
- result = new ElisionFilter(matchVersion, result);
- result = new LowerCaseFilter(matchVersion, result);
- result = new StopFilter(matchVersion, result, stopwords);
- if(!excltable.isEmpty())
- result = new KeywordMarkerFilter(result, excltable);
- result = new SnowballFilter(result, new org.tartarus.snowball.ext.FrenchStemmer());
- return new TokenStreamComponents(source, result);
- } else {
- final Tokenizer source = new StandardTokenizer(matchVersion, reader);
- TokenStream result = new StandardFilter(matchVersion, source);
- result = new StopFilter(matchVersion, result, stopwords);
- if(!excltable.isEmpty())
- result = new KeywordMarkerFilter(result, excltable);
- result = new FrenchStemFilter(result);
- // Convert to lowercase after stemming!
- return new TokenStreamComponents(source, new LowerCaseFilter(matchVersion, result));
- }
- }
-}
-
fnp / pylucene.git / blobdiff