--- a/src/luan/modules/lucene/LuceneIndex.java	Sun Jul 14 22:26:33 2019 -0600
+++ b/src/luan/modules/lucene/LuceneIndex.java	Wed Jul 24 11:43:04 2019 -0600
@@ -260,25 +260,26 @@
 		}
 	}
 
-	public void update_in_transaction(LuanFunction fn) throws IOException, LuanException {
+	public Object run_in_transaction(LuanFunction fn) throws IOException, LuanException {
 		boolean commit = !writeLock.isHeldByCurrentThread();
 		writeLock.lock();
 		try {
-			fn.call();
+			Object rtn = fn.call();
 			if(commit) writer.commit();
+			return rtn;
 		} finally {
 			wrote();
 			writeLock.unlock();
 		}
 	}
 
-	public void run_in_lock(LuanFunction fn) throws IOException, LuanException {
+	public Object run_in_lock(LuanFunction fn) throws IOException, LuanException {
 		if( writeLock.isHeldByCurrentThread() )
 			throw new RuntimeException();
 		writeLock.lock();
 		try {
 			synchronized(this) {
-				fn.call();
+				return fn.call();
 			}
 		} finally {
 			wrote();