Added two methods:

* isInstanceOf(str) checks if this prototype is an instance (equals or inherits) the
  prototype with the given name.

* addToHandlerMap(map, obj)  adds the given object as macro handler for this
prototype and all its parent prototypes.

src/helma/framework/core/Prototype.java

@@ -134,6 +134,26 @@ public final class Prototype {
 	return parent;
     }
     
+    /**
+     * Check if the given prototype is within this prototype's parent chain.
+     */
+    public final boolean isInstanceOf (String pname) {
+	if (name.equals (pname))
+	   return true;
+	if (parent != null)
+	   return parent.isInstanceOf (pname);
+	return false;
+    }
+    
+    /**
+     * Register an object as handler for this prototype and all our parent prototypes.
+     */
+    public final void addToHandlerMap (Map handlers, Object obj) {
+	if (parent != null && !"hopobject".equalsIgnoreCase (parent.getName()))
+	   parent.addToHandlerMap (handlers, obj);
+	handlers.put (name, obj);
+    }
+
     public void setDbMapping (DbMapping dbmap) {
 	this.dbmap = dbmap;
     }