Type the marshaller and associated registry methods so that we don't have to

downcast every time we register an invocation service provider.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5201 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/server/InvocationDispatcher.java

@@ -29,25 +29,23 @@ import com.threerings.presents.data.InvocationMarshaller;
 import static com.threerings.presents.Log.log;
 
 /**
- * Provides the base class via which invocation service requests are
- * dispatched.
+ * Provides the base class via which invocation service requests are dispatched.
  */
-public abstract class InvocationDispatcher
+public abstract class InvocationDispatcher<T extends InvocationMarshaller>
 {
     /** The invocation provider for whom we're dispatching. */
     public InvocationProvider provider;
 
     /**
-     * Creates an instance of the appropriate {@link InvocationMarshaller}
-     * derived class for use with this dispatcher.
+     * Creates an instance of the appropriate {@link InvocationMarshaller} derived class for use
+     * with this dispatcher.
      */
-    public abstract InvocationMarshaller createMarshaller ();
+    public abstract T createMarshaller ();
 
     /**
      * Dispatches the specified method to our provider.
      */
-    public void dispatchRequest (
-        ClientObject source, int methodId, Object[] args)
+    public void dispatchRequest (ClientObject source, int methodId, Object[] args)
         throws InvocationException
     {
         log.warning("Requested to dispatch unknown method " +

src/java/com/threerings/presents/server/InvocationManager.java

@@ -102,7 +102,7 @@ public class InvocationManager
      *
      * @param dispatcher the dispatcher to be registered.
      */
-    public InvocationMarshaller registerDispatcher (InvocationDispatcher dispatcher)
+    public <T extends InvocationMarshaller> T registerDispatcher (InvocationDispatcher<T> dispatcher)
     {
         return registerDispatcher(dispatcher, null);
     }
@@ -110,8 +110,8 @@ public class InvocationManager
     /**
      * @Deprecated use {@link #registerDispatcher(InvocationDispatcher)}.
      */
-    public InvocationMarshaller registerDispatcher (
-        InvocationDispatcher dispatcher, boolean bootstrap)
+    public <T extends InvocationMarshaller> T registerDispatcher (
+        InvocationDispatcher<T> dispatcher, boolean bootstrap)
     {
         return registerDispatcher(dispatcher, null);
     }
@@ -126,13 +126,14 @@ public class InvocationManager
      * groups. You must collect shared dispatchers into as fine grained a set of groups as
      * necessary and have different types of clients specify the list of groups they need.
      */
-    public InvocationMarshaller registerDispatcher (InvocationDispatcher dispatcher, String group)
+    public <T extends InvocationMarshaller> T registerDispatcher (
+        InvocationDispatcher<T> dispatcher, String group)
     {
         // get the next invocation code
         int invCode = nextInvCode();
 
         // create the marshaller and initialize it
-        InvocationMarshaller marsh = dispatcher.createMarshaller();
+        T marsh = dispatcher.createMarshaller();
         marsh.init(_invoid, invCode);
 
         // register the dispatcher

src/java/com/threerings/presents/server/TimeBaseDispatcher.java

@@ -29,7 +29,7 @@ import com.threerings.presents.data.TimeBaseMarshaller;
 /**
  * Dispatches requests to the {@link TimeBaseProvider}.
  */
-public class TimeBaseDispatcher extends InvocationDispatcher
+public class TimeBaseDispatcher extends InvocationDispatcher<TimeBaseMarshaller>
 {
     /**
      * Creates a dispatcher that may be registered to dispatch invocation
@@ -41,7 +41,7 @@ public class TimeBaseDispatcher extends InvocationDispatcher
     }
 
     @Override // documentation inherited
-    public InvocationMarshaller createMarshaller ()
+    public TimeBaseMarshaller createMarshaller ()
     {
         return new TimeBaseMarshaller();
     }