/*

  * This file is part of dependency-check-core.

  *

  * Licensed 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.

  *

  * Copyright (c) 2012 Jeremy Long. All Rights Reserved.

  */

 package org.owasp.dependencycheck.data.lucene;

 import java.io.Reader;

 import org.apache.lucene.analysis.Analyzer;

 import org.apache.lucene.analysis.TokenStream;

 import org.apache.lucene.analysis.Tokenizer;

 import org.apache.lucene.analysis.core.LowerCaseFilter;

 import org.apache.lucene.analysis.core.WhitespaceTokenizer;

 import org.apache.lucene.util.Version;

 /**

  * VersionAnalyzer is a Lucene Analyzer used to analyze version information.

  *

  * @author Jeremy Long <jeremy.long@owasp.org>

  * @deprecated version information is no longer stored in lucene

  */

 @Deprecated

 public class VersionAnalyzer extends Analyzer {

     //TODO consider implementing payloads/custom attributes...

     // use custom attributes for major, minor, x, x, x, rcx

     // these can then be used to weight the score for searches on the version.

     // see http://lucene.apache.org/core/3_6_1/api/core/org/apache/lucene/analysis/package-summary.html#package_description

     // look at this article to implement

     // http://www.codewrecks.com/blog/index.php/2012/08/25/index-your-blog-using-tags-and-lucene-net/

     /**

      * The Lucene Version used.

      */

     private final Version version;

     /**

      * Creates a new VersionAnalyzer.

      *

      * @param version the Lucene version

      */

     public VersionAnalyzer(Version version) {

         this.version = version;

     }

     /**

      * Creates the TokenStreamComponents

      *

      * @param fieldName the field name being analyzed

      * @param reader the reader containing the input

      * @return the TokenStreamComponents

      */

     @Override

     protected TokenStreamComponents createComponents(String fieldName, Reader reader) {

         final Tokenizer source = new WhitespaceTokenizer(version, reader);

         TokenStream stream = source;

         stream = new LowerCaseFilter(version, stream);

         return new TokenStreamComponents(source, stream);

     }

 }