Index: CHANGES.txt
===================================================================
--- CHANGES.txt	(revision 893094)
+++ CHANGES.txt	(revision 893104)
@@ -43,6 +43,9 @@
  * LUCENE-1609: Restore IndexReader.getTermInfosIndexDivisor (it was
    accidentally removed in 3.0.0)  (Mike McCandless)
 
+ * LUCENE-1972: Restore SortField.getComparatorSource (it was
+   accidentally removed in 3.0.0)  (John Wang via Uwe Schindler)
+
 ======================= Release 3.0.0 2009-11-25 =======================
 
 Changes in backwards compatibility policy

Index: src/java/org/apache/lucene/search/SortField.java
===================================================================
--- src/java/org/apache/lucene/search/SortField.java	(revision 893094)
+++ src/java/org/apache/lucene/search/SortField.java	(revision 893104)
@@ -258,6 +258,13 @@
     return reverse;
   }
 
+  /** Returns the {@link FieldComparatorSource} used for
+   * custom sorting
+   */
+  public FieldComparatorSource getComparatorSource() {
+    return comparatorSource;
+  }
+
   @Override
   public String toString() {
     StringBuilder buffer = new StringBuilder();