From b1e333009ca5cd8104ce19bc8ddbfbb24cdce962 Mon Sep 17 00:00:00 2001
From: Greg Burd <gburd@onshape.com>
Date: Thu, 1 Mar 2018 05:23:43 -0700
Subject: [PATCH] Don't merge in keys with null values, JCache doesn't support
 null values.

---
 src/main/java/net/helenus/core/HelenusSession.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/helenus/core/HelenusSession.java b/src/main/java/net/helenus/core/HelenusSession.java
index 02734b9..2e1fe7f 100644
--- a/src/main/java/net/helenus/core/HelenusSession.java
+++ b/src/main/java/net/helenus/core/HelenusSession.java
@@ -345,7 +345,9 @@ public class HelenusSession extends AbstractSessionOperations implements Closeab
           if (pojo == null || pojo == HelenusSession.deleted) {
             cache.remove(cacheKey);
           } else {
-            cache.put(cacheKey, pojo);
+            if (pojo != null) {
+              cache.put(cacheKey, pojo);
+            }
           }
         }
       }