From 7fb6c2ecfe001fa2e60b5239c26ab27d1dc32046 Mon Sep 17 00:00:00 2001
From: Michael McCandless <mikemccand@apache.org>
Date: Thu, 21 Jul 2011 16:17:00 +0000
Subject: [PATCH] small optimization: don't add docBase unless score may be
 competitive

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1149256 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/lucene/search/TopScoreDocCollector.java     | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lucene/src/java/org/apache/lucene/search/TopScoreDocCollector.java b/lucene/src/java/org/apache/lucene/search/TopScoreDocCollector.java
index d8f317592c1..c542e18c31c 100644
--- a/lucene/src/java/org/apache/lucene/search/TopScoreDocCollector.java
+++ b/lucene/src/java/org/apache/lucene/search/TopScoreDocCollector.java
@@ -82,8 +82,13 @@ public abstract class TopScoreDocCollector extends TopDocsCollector<ScoreDoc> {
       assert !Float.isNaN(score);
 
       totalHits++;
+      if (score < pqTop.score) {
+        // Doesn't compete w/ bottom entry in queue
+        return;
+      }
       doc += docBase;
-      if (score < pqTop.score || (score == pqTop.score && doc > pqTop.doc)) {
+      if (score == pqTop.score && doc > pqTop.doc) {
+        // Break tie in score by doc ID:
         return;
       }
       pqTop.doc = doc;