--- /dev/null
+package org.simantics.db.layer0;\r
+\r
+import java.util.Map;\r
+\r
+public interface StandardEngine<Node> {\r
+\r
+ Object getValue(Node node);\r
+ void setValue(Node node, Object value);\r
+ String getName(Node node);\r
+ Map<String,Node> getChildren(Node node);\r
+ Map<String,Node> getProperties(Node node);\r
+ \r
+}\r