--- /dev/null
+package org.simantics.simulation.data;\r
+\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+\r
+public interface GraphHandle {\r
+\r
+ String key();\r
+ Binding binding(ReadGraph graph) throws DatabaseException;\r
+ Object getValue(ReadGraph graph) throws DatabaseException;\r
+\r
+}\r