pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / src / java / org / apache / lucene / analysis / PorterStemFilter.java

diff --git a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/PorterStemFilter.java b/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/PorterStemFilter.java
deleted file mode 100644 (file)
index 9f0d80a..0000000
--- a/lucene-java-3.4.0/lucene/src/java/org/apache/lucene/analysis/PorterStemFilter.java
+++ /dev/null
@@ -1,67 +0,0 @@
-package org.apache.lucene.analysis;
-
-/**
- * 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.tokenattributes.KeywordAttribute;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-
-/** Transforms the token stream as per the Porter stemming algorithm.
-    Note: the input to the stemming filter must already be in lower case,
-    so you will need to use LowerCaseFilter or LowerCaseTokenizer farther
-    down the Tokenizer chain in order for this to work properly!
-    <P>
-    To use this filter with other analyzers, you'll want to write an
-    Analyzer class that sets up the TokenStream chain as you want it.
-    To use this with LowerCaseTokenizer, for example, you'd write an
-    analyzer like this:
-    <P>
-    <PRE>
-    class MyAnalyzer extends Analyzer {
-      public final TokenStream tokenStream(String fieldName, Reader reader) {
-        return new PorterStemFilter(new LowerCaseTokenizer(reader));
-      }
-    }
-    </PRE>
-    <p>
-    Note: This filter is aware of the {@link KeywordAttribute}. To prevent
-    certain terms from being passed to the stemmer
-    {@link KeywordAttribute#isKeyword()} should be set to <code>true</code>
-    in a previous {@link TokenStream}.
-    </p>
-*/
-public final class PorterStemFilter extends TokenFilter {
-  private final PorterStemmer stemmer = new PorterStemmer();
-  private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
-  private final KeywordAttribute keywordAttr = addAttribute(KeywordAttribute.class);
-
-  public PorterStemFilter(TokenStream in) {
-    super(in);
-  }
-
-  @Override
-  public final boolean incrementToken() throws IOException {
-    if (!input.incrementToken())
-      return false;
-
-    if ((!keywordAttr.isKeyword()) && stemmer.stem(termAtt.buffer(), 0, termAtt.length()))
-      termAtt.copyBuffer(stemmer.getResultBuffer(), 0, stemmer.getResultLength());
-    return true;
-  }
-}