Automatically add the shadow to our type set for @Computed(shadowOf=FooRecord)

record classes.

src/java/com/samskivert/jdbc/depot/DepotTypes.java

@@ -169,8 +169,17 @@ public class DepotTypes
         if (_classMap.containsKey(type)) {
             return;
         }
-        _classMap.put(type, ctx.getMarshaller(type));
+
+        // add the class in question
+        DepotMarshaller<?> marsh = ctx.getMarshaller(type);
+        _classMap.put(type, marsh);
         _classIx.put(type, _classIx.size());
+
+        // if this class is @Computed and has a shadow, add its shadow
+        if (marsh.getComputed() != null &&
+            !PersistentRecord.class.equals(marsh.getComputed().shadowOf())) {
+            addClass(ctx, marsh.getComputed().shadowOf());
+        }
     }
 
     /**

src/java/com/samskivert/jdbc/depot/clause/SelectClause.java

@@ -175,15 +175,6 @@ public class SelectClause<T extends PersistentRecord> extends QueryClause
     {
         classSet.add(_pClass);
 
-        // TODO: This should not have to do a getAnnotation().
-        Computed computed = _pClass.getAnnotation(Computed.class);
-        if (computed != null) {
-            Class<? extends PersistentRecord> shadowClass = computed.shadowOf();
-            if (!PersistentRecord.class.equals(shadowClass)) {
-                classSet.add(shadowClass);
-            }
-        }
-
         if (_fromOverride != null) {
             _fromOverride.addClasses(classSet);
         }