pylucene 3.5.0-3

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

diff --git a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/snowball/SnowballFilter.java b/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/snowball/SnowballFilter.java
deleted file mode 100644 (file)
index 7ae9515..0000000
--- a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/snowball/SnowballFilter.java
+++ /dev/null
@@ -1,94 +0,0 @@
-package org.apache.lucene.analysis.snowball;
-
-/**
- * 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 org.apache.lucene.analysis.TokenFilter;
-import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.analysis.tokenattributes.KeywordAttribute;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-import org.apache.lucene.analysis.tr.TurkishLowerCaseFilter; // javadoc @link
-import org.apache.lucene.analysis.LowerCaseFilter; // javadoc @link
-import org.tartarus.snowball.SnowballProgram;
-
-/**
- * A filter that stems words using a Snowball-generated stemmer.
- *
- * Available stemmers are listed in {@link org.tartarus.snowball.ext}.
- * <p><b>NOTE</b>: SnowballFilter expects lowercased text.
- * <ul>
- *  <li>For the Turkish language, see {@link TurkishLowerCaseFilter}.
- *  <li>For other languages, see {@link LowerCaseFilter}.
- * </ul>
- * </p>
- */
-public final class SnowballFilter extends TokenFilter {
-
-  private final SnowballProgram stemmer;
-
-  private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
-  private final KeywordAttribute keywordAttr = addAttribute(KeywordAttribute.class);
-  
-  public SnowballFilter(TokenStream input, SnowballProgram stemmer) {
-    super(input);
-    this.stemmer = stemmer;
-  }
-
-  /**
-   * Construct the named stemming filter.
-   *
-   * Available stemmers are listed in {@link org.tartarus.snowball.ext}.
-   * The name of a stemmer is the part of the class name before "Stemmer",
-   * e.g., the stemmer in {@link org.tartarus.snowball.ext.EnglishStemmer} is named "English".
-   *
-   * @param in the input tokens to stem
-   * @param name the name of a stemmer
-   */
-  public SnowballFilter(TokenStream in, String name) {
-    super(in);
-    try {      
-      Class<?> stemClass = Class.forName("org.tartarus.snowball.ext." + name + "Stemmer");
-      stemmer = (SnowballProgram) stemClass.newInstance();
-    } catch (Exception e) {
-      throw new RuntimeException(e.toString());
-    }
-  }
-
-  /** Returns the next input Token, after being stemmed */
-  @Override
-  public final boolean incrementToken() throws IOException {
-    if (input.incrementToken()) {
-      if (!keywordAttr.isKeyword()) {
-        char termBuffer[] = termAtt.buffer();
-        final int length = termAtt.length();
-        stemmer.setCurrent(termBuffer, length);
-        stemmer.stem();
-        final char finalTerm[] = stemmer.getCurrentBuffer();
-        final int newLength = stemmer.getCurrentBufferLength();
-        if (finalTerm != termBuffer)
-          termAtt.copyBuffer(finalTerm, 0, newLength);
-        else
-          termAtt.setLength(newLength);
-      }
-      return true;
-    } else {
-      return false;
-    }
-  }
-}