--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/software/mpdl-services/mpiwg-mpdl-lt/src/de/mpg/mpiwg/berlin/mpdl/lucene/util/LuceneUtil.java	Wed Nov 09 15:32:05 2011 +0100
@@ -0,0 +1,27 @@
+package de.mpg.mpiwg.berlin.mpdl.lucene.util;
+
+import java.util.ArrayList;
+
+public class LuceneUtil {
+  private static LuceneUtil instance;
+  
+  public static LuceneUtil getInstance() {
+    if (instance == null) {
+      instance = new LuceneUtil();
+    }
+    return instance;
+  }
+
+  public ArrayList<String> getVariantsFromLuceneQuery(String queryString) {
+    ArrayList<String> variants = new ArrayList<String>();
+    String[] variantTokens = queryString.split(" ");  // TODO throw the phrases away (e.g.: "bla bla bla")
+    for (int i = 0; i < variantTokens.length; i++) {
+      String token = variantTokens[i];
+      if (! (token.contains("*") || token.contains("?") || token.contains("~") || token.contains("-") || token.contains("+") || token.contains("^") || token.contains("OR") || token.contains("AND") || token.contains("NOT"))) {
+        variants.add(token);
+      }
+    }
+    return variants;
+  }
+
+}
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