From ec0db033b1e3605145d1d540e8a9496f84fd5429 Mon Sep 17 00:00:00 2001
From: cpfeiffer <cpfeiffer@users.noreply.github.com>
Date: Sat, 27 Aug 2016 15:36:42 +0200
Subject: [PATCH] Avoid potential NPE when subclasses return null for
 rawKindSampleProperty

---
 .../gadgetbridge/devices/AbstractSampleProvider.java | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/AbstractSampleProvider.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/AbstractSampleProvider.java
index 385863389..563efc8c2 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/AbstractSampleProvider.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/AbstractSampleProvider.java
@@ -1,5 +1,8 @@
 package nodomain.freeyourgadget.gadgetbridge.devices;
 
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -110,6 +113,10 @@ public abstract class AbstractSampleProvider<T extends AbstractActivitySample> i
             return null;
         }
         Property rawKindProperty = getRawKindSampleProperty();
+        if (rawKindProperty == null) {
+            return null;
+        }
+
         if (dbActivityTypes.length == 1) {
             return rawKindProperty.eq(dbActivityTypes[0]);
         }
@@ -142,7 +149,12 @@ public abstract class AbstractSampleProvider<T extends AbstractActivitySample> i
 
     public abstract AbstractDao<T,?> getSampleDao();
 
+    @Nullable
     protected abstract Property getRawKindSampleProperty();
+
+    @NonNull
     protected abstract Property getTimestampSampleProperty();
+
+    @NonNull
     protected abstract Property getDeviceIdentifierSampleProperty();
 }