From 6c4f3a10c54a88432421ed40c24f88224b34cf01 Mon Sep 17 00:00:00 2001
From: Uwe Schindler <uschindler@apache.org>
Date: Mon, 15 Nov 2010 09:14:39 +0000
Subject: [PATCH] LUCENE-2757: Remove unneeded casts

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1035194 13f79535-47bb-0310-9956-ffa450edef68
---
 .../org/apache/lucene/search/ScoringRewrite.java  | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/lucene/src/java/org/apache/lucene/search/ScoringRewrite.java b/lucene/src/java/org/apache/lucene/search/ScoringRewrite.java
index 255c1b651ab..03c3958dee0 100644
--- a/lucene/src/java/org/apache/lucene/search/ScoringRewrite.java
+++ b/lucene/src/java/org/apache/lucene/search/ScoringRewrite.java
@@ -55,7 +55,7 @@ public abstract class ScoringRewrite<Q extends Query> extends TermCollectingRewr
    *  exceeds {@link BooleanQuery#getMaxClauseCount}.
    *
    *  @see #setRewriteMethod */
-  public final static RewriteMethod SCORING_BOOLEAN_QUERY_REWRITE = new ScoringRewrite<BooleanQuery>() {
+  public final static ScoringRewrite<BooleanQuery> SCORING_BOOLEAN_QUERY_REWRITE = new ScoringRewrite<BooleanQuery>() {
     @Override
     protected BooleanQuery getTopLevelQuery() {
       return new BooleanQuery(true);
@@ -93,14 +93,13 @@ public abstract class ScoringRewrite<Q extends Query> extends TermCollectingRewr
   public final static RewriteMethod CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE = new RewriteMethod() {
     @Override
     public Query rewrite(IndexReader reader, MultiTermQuery query) throws IOException {
-      Query result = SCORING_BOOLEAN_QUERY_REWRITE.rewrite(reader, query);
-      assert result instanceof BooleanQuery;
+      final BooleanQuery bq = SCORING_BOOLEAN_QUERY_REWRITE.rewrite(reader, query);
       // TODO: if empty boolean query return NullQuery?
-      if (!((BooleanQuery) result).clauses().isEmpty()) {
-        // strip the scores off
-        result = new ConstantScoreQuery(new QueryWrapperFilter(result));
-        result.setBoost(query.getBoost());
-      }
+      if (bq.clauses().isEmpty())
+        return bq;
+      // strip the scores off
+      final Query result = new ConstantScoreQuery(new QueryWrapperFilter(bq));
+      result.setBoost(query.getBoost());
       return result;
     }