bug fixes and additions

Former-commit-id: 6ac1a641dce3b4826aadf886ec45364fd9b6ea5a

src/main/java/org/codesecure/dependencycheck/data/lucene/SearchVersionAnalyzer.java

@@ -0,0 +1,70 @@
+/*
+ * This file is part of DependencyCheck.
+ *
+ * DependencyCheck is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * DependencyCheck is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * DependencyCheck. If not, see http://www.gnu.org/licenses/.
+ *
+ * Copyright (c) 2012 Jeremy Long. All Rights Reserved.
+ */
+package org.codesecure.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;
+
+/**
+ * SearchVersionAnalyzer is a Lucene Analyzer used to analyze version information.
+ *
+ * @author Jeremy Long (jeremy.long@gmail.com)
+ */
+public class SearchVersionAnalyzer 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 Version version = null;
+
+    /**
+     * Creates a new SearchVersionAnalyzer
+     * @param version the Lucene version
+     */
+    public SearchVersionAnalyzer(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) {
+        Tokenizer source = new WhitespaceTokenizer(version, reader);
+        TokenStream stream = source;
+        stream = new LowerCaseFilter(version, stream);
+        stream = new VersionTokenizingFilter(stream);
+        return new TokenStreamComponents(source, stream);
+    }
+}