--- /dev/null
+package org.simantics.db.request;\r
+\r
+public interface Request {\r
+\r
+ /*\r
+ * The integer value obtained from this method can be used to determine\r
+ * the evaluation thread of the request.\r
+ * \r
+ * @return A non-negative integer value\r
+ * \r
+ */\r
+ int threadHash();\r
+ \r
+}\r