svn commit: r1672729 - in /lucene/dev/branches/branch_5x: ./ lucene/ lucene/core/ lucene/core/src/java/org/apache/lucene/util/BitDocIdSet.java

[ds...@apache.org]

Author: dsmiley
Date: Fri Apr 10 19:00:46 2015
New Revision: 1672729

URL: http://svn.apache.org/r1672729
Log:
LUCENE-5579: BitDocIdSet.Builder.isDefinitelyEmpty()

Modified:
    lucene/dev/branches/branch_5x/   (props changed)
    lucene/dev/branches/branch_5x/lucene/   (props changed)
    lucene/dev/branches/branch_5x/lucene/core/   (props changed)
    lucene/dev/branches/branch_5x/lucene/core/src/java/org/apache/lucene/util/BitDocIdSet.java

Modified: lucene/dev/branches/branch_5x/lucene/core/src/java/org/apache/lucene/util/BitDocIdSet.java
URL: http://svn.apache.org/viewvc/lucene/dev/branches/branch_5x/lucene/core/src/java/org/apache/lucene/util/BitDocIdSet.java?rev=1672729&r1=1672728&r2=1672729&view=diff
==============================================================================
--- lucene/dev/branches/branch_5x/lucene/core/src/java/org/apache/lucene/util/BitDocIdSet.java (original)
+++ lucene/dev/branches/branch_5x/lucene/core/src/java/org/apache/lucene/util/BitDocIdSet.java Fri Apr 10 19:00:46 2015
@@ -113,6 +113,15 @@ public class BitDocIdSet extends DocIdSe
     }
 
     /**
+     * Is this builder definitely empty?  If so, {@link #build()} will return null.  This is usually the same as
+     * simply being empty but if this builder was constructed with the {@code full} option or if an iterator was passed
+     * that iterated over no documents, then we're not sure.
+     */
+    public boolean isDefinitelyEmpty() {
+      return sparseSet == null && denseSet == null;
+    }
+
+    /**
      * Add the content of the provided {@link DocIdSetIterator} to this builder.
      */
     public void or(DocIdSetIterator it) throws IOException {