Index: src/java/org/apache/lucene/search/PrefixTermEnum.java
===================================================================
--- src/java/org/apache/lucene/search/PrefixTermEnum.java	(revision 783244)
+++ src/java/org/apache/lucene/search/PrefixTermEnum.java	(working copy)
@@ -15,7 +15,7 @@
  */
 public class PrefixTermEnum extends FilteredTermEnum {
 
-  private Term prefix;
+  private final Term prefix;
   private boolean endEnum = false;
 
   public PrefixTermEnum(IndexReader reader, Term prefix) throws IOException {
@@ -31,6 +31,10 @@
   protected boolean endEnum() {
     return endEnum;
   }
+  
+  protected Term getPrefixTerm() {
+      return prefix;
+  }
 
   protected boolean termCompare(Term term) {
     if (term.field() == prefix.field() && term.text().startsWith(prefix.text())) {