diff --git a/src/helma/objectmodel/db/DbMapping.java b/src/helma/objectmodel/db/DbMapping.java index 590fdfd8..c90357bf 100644 --- a/src/helma/objectmodel/db/DbMapping.java +++ b/src/helma/objectmodel/db/DbMapping.java @@ -675,11 +675,11 @@ public class DbMapping implements Updatable { * by the string argument, either itself or via one of its parent prototypes. */ public boolean isInstanceOf (String other) { - if (typename.equals (other)) + if (typename != null && typename.equals (other)) return true; DbMapping p = parentMapping; while (p != null) { - if (p.typename.equals (other)) + if (p.typename != null && p.typename.equals (other)) return true; p = p.parentMapping; }