From 90670a9c7e32b0aa83f829d7064c7efdf0dbd09d Mon Sep 17 00:00:00 2001
From: Maarten Rijke <maarten.rijke@securitymatters.eu>
Date: Mon, 8 Dec 2014 20:11:58 +0100
Subject: [PATCH] Fix NullPointerException in PartialDimExtractionFn by
 explicity checking for dimValue == null, attempt 2

---
 .../java/io/druid/query/extraction/PartialDimExtractionFn.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/processing/src/main/java/io/druid/query/extraction/PartialDimExtractionFn.java b/processing/src/main/java/io/druid/query/extraction/PartialDimExtractionFn.java
index 7e2bd294378..34c026f3db3 100644
--- a/processing/src/main/java/io/druid/query/extraction/PartialDimExtractionFn.java
+++ b/processing/src/main/java/io/druid/query/extraction/PartialDimExtractionFn.java
@@ -58,7 +58,7 @@ public class PartialDimExtractionFn implements DimExtractionFn
   @Override
   public String apply(String dimValue)
   {
-    if (dimValue == null) return null;
+    dimValue = (dimValue == null) ? "" : dimValue;
     Matcher matcher = pattern.matcher(dimValue);
     return matcher.find() ? dimValue : null;
   }