AutoId.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Threading.Tasks;
+namespace raven_integration
+{
+    public class AutoId
+    {
+        private readonly object valueLock = new object();
+        private uint currentValue;  //postgre bigint 
+
+        public AutoId(uint initialValue)
+        {
+            currentValue = initialValue;
+        }
+
+        public uint GetNext()
+        {
+            lock (valueLock)
+            {
+                currentValue += 1;
+                if (currentValue == 0)
+                    currentValue += 1;
+                return currentValue;
+            }
+        }
+    }
+}