From c5fcf1a6f23c01690ca8643bd3a521ca6509ff75 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 22 Dec 2016 02:00:57 +1300
Subject: Check for empty string

---
 src/org/traccar/database/QueryBuilder.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/org/traccar/database/QueryBuilder.java b/src/org/traccar/database/QueryBuilder.java
index 5a4948de0..9972bb74d 100644
--- a/src/org/traccar/database/QueryBuilder.java
+++ b/src/org/traccar/database/QueryBuilder.java
@@ -396,7 +396,7 @@ public final class QueryBuilder {
                 @Override
                 public void process(T object, ResultSet resultSet) throws SQLException {
                     String value = resultSet.getString(name);
-                    if (value != null) {
+                    if (value != null && !value.isEmpty()) {
                         try {
                             method.invoke(object, Context.getObjectMapper().readValue(value, parameterType));
                         } catch (InvocationTargetException | IllegalAccessException | IOException error) {
-- 
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