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Posted to commits@lucene.apache.org by mi...@apache.org on 2011/09/25 16:10:42 UTC

svn commit: r1175397 - /lucene/dev/trunk/modules/join/src/java/org/apache/lucene/search/join/BlockJoinQuery.java

Author: mikemccand
Date: Sun Sep 25 14:10:42 2011
New Revision: 1175397

URL: http://svn.apache.org/viewvc?rev=1175397&view=rev
Log:
add assert

Modified:
    lucene/dev/trunk/modules/join/src/java/org/apache/lucene/search/join/BlockJoinQuery.java

Modified: lucene/dev/trunk/modules/join/src/java/org/apache/lucene/search/join/BlockJoinQuery.java
URL: http://svn.apache.org/viewvc/lucene/dev/trunk/modules/join/src/java/org/apache/lucene/search/join/BlockJoinQuery.java?rev=1175397&r1=1175396&r2=1175397&view=diff
==============================================================================
--- lucene/dev/trunk/modules/join/src/java/org/apache/lucene/search/join/BlockJoinQuery.java (original)
+++ lucene/dev/trunk/modules/join/src/java/org/apache/lucene/search/join/BlockJoinQuery.java Sun Sep 25 14:10:42 2011
@@ -322,6 +322,9 @@ public class BlockJoinQuery extends Quer
         return parentDoc = NO_MORE_DOCS;
       }
 
+      // Every parent must have at least one child:
+      assert parentTarget != 0;
+
       final int prevParentDoc = parentBits.prevSetBit(parentTarget-1);
 
       //System.out.println("  rolled back to prevParentDoc=" + prevParentDoc + " vs parentDoc=" + parentDoc);