Added support for distributed sets: unordered collections of elements

where the elements are user defined objects that know how to read and
write themselves on a stream. Sets are required to contain elements all of
the same type to make network traffic more efficient (avoid sending the
classname every time an element is added or removed).


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@264 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/dobj/DObject.java

@@ -1,5 +1,5 @@
 //
-// $Id: DObject.java,v 1.23 2001/08/15 18:38:54 mdb Exp $
+// $Id: DObject.java,v 1.24 2001/08/16 03:31:08 mdb Exp $
 
 package com.threerings.cocktail.cher.dobj;
 
@@ -412,6 +412,28 @@ public class DObject
         _mgr.postEvent(event);
     }
 
+    /**
+     * Calls by derived instances when a set adder method was called.
+     */
+    protected void requestElementAdd (String name, DSet.Element elem)
+    {
+        // generate an element added event
+        DEvent event = new ElementAddedEvent(_oid, name, elem);
+        // and dispatch it to our dobjmgr
+        _mgr.postEvent(event);
+    }
+
+    /**
+     * Calls by derived instances when a set remover method was called.
+     */
+    protected void requestElementRemove (String name, Object key)
+    {
+        // generate an element removed event
+        DEvent event = new ElementRemovedEvent(_oid, name, key);
+        // and dispatch it to our dobjmgr
+        _mgr.postEvent(event);
+    }
+
     /** Our object id. */
     protected int _oid;