fix #55 thanks to @ischtz

Author: jackbrookes

Assets/Testing/AWSDDBTest.unity

@@ -1949,7 +1949,7 @@ PrefabInstance:
     - target: {fileID: 2834388984357925155, guid: 0a3b6392f04558844bd340e68ced1ff9,
         type: 3}
       propertyPath: m_AnchoredPosition.y
-      value: 6175
+      value: 6500
       objectReference: {fileID: 0}
     - target: {fileID: 2896031059644693069, guid: 0a3b6392f04558844bd340e68ced1ff9,
         type: 3}
@@ -1999,7 +1999,7 @@ PrefabInstance:
     - target: {fileID: 4267567203292169432, guid: 0a3b6392f04558844bd340e68ced1ff9,
         type: 3}
       propertyPath: m_AnchoredPosition.y
-      value: 11400
+      value: 12000
       objectReference: {fileID: 0}
     - target: {fileID: 4298776666381973480, guid: 0a3b6392f04558844bd340e68ced1ff9,
         type: 3}
@@ -2116,6 +2116,11 @@ PrefabInstance:
       propertyPath: m_SizeDelta.y
       value: 0
       objectReference: {fileID: 0}
+    - target: {fileID: 7877499147840307632, guid: 0a3b6392f04558844bd340e68ced1ff9,
+        type: 3}
+      propertyPath: m_IsActive
+      value: 0
+      objectReference: {fileID: 0}
     - target: {fileID: 8307715182677704244, guid: 0a3b6392f04558844bd340e68ced1ff9,
         type: 3}
       propertyPath: m_AnchorMax.x

Assets/UXF/Scripts/DataHandling/WebAWSDynamoDB.cs

@@ -130,11 +130,15 @@ public override string HandleDataTable(UXFDataTable table, string experiment, st
                         item[primaryKey] = primaryKeyValue;
                         return item;
                     })
-                    .Cast<object>()
-                    .ToList();
+                    .Cast<object>();
 
-                string req = MiniJSON.Json.Serialize(dataList);
-                DDB_BatchWriteItem(tableName, req, gameObject.name);
+                // split the request into batches of 25 because of limit in DynamoDB BatchWriteItem 
+                var batches = dataList.Batch(25);
+                foreach (var batch in batches)
+                {
+                    string req = MiniJSON.Json.Serialize(batch.ToList());
+                    DDB_BatchWriteItem(tableName, req, gameObject.name);
+                }
                 return string.Format("dynamodb:{0}:{1}", tableName, primaryKeyValue);
             }
             else

Assets/UXF/Scripts/Etc/Extensions.cs

@@ -101,6 +101,31 @@ public static string ToLower(this UXFDataType dataType)
             return dataType.ToString().ToLower();
         }
 
+        public static IEnumerable<IEnumerable<TSource>> Batch<TSource>(
+                  this IEnumerable<TSource> source, int size)
+        {
+            TSource[] bucket = null;
+            var count = 0;
+
+            foreach (var item in source)
+            {
+                if (bucket == null)
+                    bucket = new TSource[size];
+
+                bucket[count++] = item;
+                if (count != size)
+                    continue;
+
+                yield return bucket;
+
+                bucket = null;
+                count = 0;
+            }
+
+            if (bucket != null && count > 0)
+                yield return bucket.Take(count).ToArray();
+        }
+
     }
 
     [System.Serializable]