pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / analyzers / common / src / java / org / apache / lucene / analysis / hu / HungarianAnalyzer.java

diff --git a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hu/HungarianAnalyzer.java b/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hu/HungarianAnalyzer.java
deleted file mode 100644 (file)
index b8c827c..0000000
--- a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hu/HungarianAnalyzer.java
+++ /dev/null
@@ -1,131 +0,0 @@
-package org.apache.lucene.analysis.hu;
-
-/**
- * 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.IOException;
-import java.io.Reader;
-import java.util.Set;
-
-import org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.CharArraySet;
-import org.apache.lucene.analysis.KeywordMarkerFilter;
-import org.apache.lucene.analysis.LowerCaseFilter;
-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.util.Version;
-import org.tartarus.snowball.ext.HungarianStemmer;
-
-/**
- * {@link Analyzer} for Hungarian.
- */
-public final class HungarianAnalyzer extends StopwordAnalyzerBase {
-  private final Set<?> stemExclusionSet;
-  
-  /** File containing default Hungarian stopwords. */
-  public final static String DEFAULT_STOPWORD_FILE = "hungarian_stop.txt";
-  
-  /**
-   * Returns an unmodifiable instance of the default stop words set.
-   * @return default stop words set.
-   */
-  public static Set<?> getDefaultStopSet(){
-    return DefaultSetHolder.DEFAULT_STOP_SET;
-  }
-  
-  /**
-   * Atomically loads the DEFAULT_STOP_SET in a lazy fashion once the outer class 
-   * accesses the static final set the first time.;
-   */
-  private static class DefaultSetHolder {
-    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 #DEFAULT_STOPWORD_FILE}.
-   */
-  public HungarianAnalyzer(Version matchVersion) {
-    this(matchVersion, DefaultSetHolder.DEFAULT_STOP_SET);
-  }
-  
-  /**
-   * Builds an analyzer with the given stop words.
-   * 
-   * @param matchVersion lucene compatibility version
-   * @param stopwords a stopword set
-   */
-  public HungarianAnalyzer(Version matchVersion, Set<?> stopwords) {
-    this(matchVersion, stopwords, CharArraySet.EMPTY_SET);
-  }
-
-  /**
-   * Builds an analyzer with the given stop words. If a non-empty stem exclusion set is
-   * provided this analyzer will add a {@link KeywordMarkerFilter} before
-   * stemming.
-   * 
-   * @param matchVersion lucene compatibility version
-   * @param stopwords a stopword set
-   * @param stemExclusionSet a set of terms not to be stemmed
-   */
-  public HungarianAnalyzer(Version matchVersion, Set<?> stopwords, Set<?> stemExclusionSet) {
-    super(matchVersion, stopwords);
-    this.stemExclusionSet = CharArraySet.unmodifiableSet(CharArraySet.copy(
-        matchVersion, stemExclusionSet));
-  }
-
-  /**
-   * Creates a
-   * {@link org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents}
-   * which tokenizes all the text in the provided {@link Reader}.
-   * 
-   * @return A
-   *         {@link org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents}
-   *         built from an {@link StandardTokenizer} filtered with
-   *         {@link StandardFilter}, {@link LowerCaseFilter}, {@link StopFilter}
-   *         , {@link KeywordMarkerFilter} if a stem exclusion set is
-   *         provided and {@link SnowballFilter}.
-   */
-  @Override
-  protected TokenStreamComponents createComponents(String fieldName,
-      Reader reader) {
-    final Tokenizer source = new StandardTokenizer(matchVersion, reader);
-    TokenStream result = new StandardFilter(matchVersion, source);
-    result = new LowerCaseFilter(matchVersion, result);
-    result = new StopFilter(matchVersion, result, stopwords);
-    if(!stemExclusionSet.isEmpty())
-      result = new KeywordMarkerFilter(result, stemExclusionSet);
-    result = new SnowballFilter(result, new HungarianStemmer());
-    return new TokenStreamComponents(source, result);
-  }
-}