From e4aee9cfbc56d3af16627b8923aa43b2de2782d5 Mon Sep 17 00:00:00 2001
From: kimchy <kimchy@gmail.com>
Date: Fri, 13 May 2011 13:17:24 +0300
Subject: [PATCH] check for early exit on max expansions on multi suffix terms
 with prefix, and handle no terms provided

---
 .../common/lucene/search/MultiPhrasePrefixQuery.java        | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/elasticsearch/src/main/java/org/elasticsearch/common/lucene/search/MultiPhrasePrefixQuery.java b/modules/elasticsearch/src/main/java/org/elasticsearch/common/lucene/search/MultiPhrasePrefixQuery.java
index cc7cde02ac5..97bd9730a9e 100644
--- a/modules/elasticsearch/src/main/java/org/elasticsearch/common/lucene/search/MultiPhrasePrefixQuery.java
+++ b/modules/elasticsearch/src/main/java/org/elasticsearch/common/lucene/search/MultiPhrasePrefixQuery.java
@@ -125,6 +125,9 @@ public class MultiPhrasePrefixQuery extends Query {
     }
 
     @Override public Query rewrite(IndexReader reader) throws IOException {
+        if (termArrays.isEmpty()) {
+            return MatchNoDocsQuery.INSTANCE;
+        }
         MultiPhraseQuery query = new MultiPhraseQuery();
         query.setSlop(slop);
         int sizeMinus1 = termArrays.size() - 1;
@@ -136,6 +139,9 @@ public class MultiPhrasePrefixQuery extends Query {
         List<Term> terms = new ArrayList<Term>();
         for (Term term : suffixTerms) {
             getPrefixTerms(terms, term, reader);
+            if (terms.size() > maxExpansions) {
+                break;
+            }
         }
         if (terms.isEmpty()) {
             return MatchNoDocsQuery.INSTANCE;