LUCENE-1131 - Added numDeletedDocs() to IndexReader

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@695510 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -154,6 +154,8 @@ API Changes
     NO_NORMS becomes NOT_ANALYZED_NO_NORMS and a new ANALYZED_NO_NORMS
     is added.  (Mike McCandless)
 
+24. LUCENE-1131: Added numDeletedDocs method to IndexReader (Otis Gospodnetic)
+
 Bug fixes
     
  1. LUCENE-1134: Fixed BooleanQuery.rewrite to only optimize a single 

src/java/org/apache/lucene/index/IndexReader.java

@@ -622,6 +622,11 @@ public abstract class IndexReader {
    */
   public abstract int maxDoc();
 
+  /** Returns the number of deleted documents. */
+  public int numDeletedDocs() {
+    return maxDoc() - numDocs();
+  }
+
   /** Returns the stored fields of the <code>n</code><sup>th</sup>
    <code>Document</code> in this index.
    * @throws CorruptIndexException if the index is corrupt