Convert Narya (most of the way) over to a Maven Ant task based build. The

ActionScript bits remain belligerent, but the Java stuff is mostly shipshape.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@6222 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/main/java/com/threerings/presents/server/TimeBaseProvider.java

@@ -0,0 +1,103 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2010 Three Rings Design, Inc., All Rights Reserved
+// http://code.google.com/p/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.presents.server;
+
+import java.util.HashMap;
+
+import com.google.common.collect.Maps;
+
+import com.threerings.presents.client.TimeBaseService.GotTimeBaseListener;
+import com.threerings.presents.data.ClientObject;
+import com.threerings.presents.data.TimeBaseCodes;
+import com.threerings.presents.data.TimeBaseObject;
+import com.threerings.presents.dobj.RootDObjectManager;
+
+/**
+ * Provides the server-side of the time base services. The time base services provide a means by
+ * which delta times can be sent over the network which are expanded based on a shared base time
+ * into full time stamps.
+ */
+public class TimeBaseProvider
+    implements InvocationProvider, TimeBaseCodes
+{
+    /**
+     * Registers the time provider with the appropriate managers. Called by the presents server at
+     * startup.
+     */
+    public static void init (InvocationManager invmgr, RootDObjectManager omgr)
+    {
+        // we'll need these later
+        _invmgr = invmgr;
+        _omgr = omgr;
+
+        // register a provider instance
+        invmgr.registerDispatcher(new TimeBaseDispatcher(new TimeBaseProvider()), GLOBAL_GROUP);
+    }
+
+    /**
+     * Creates a time base object which can subsequently be fetched by the client and used to send
+     * delta times.
+     *
+     * @param timeBase the name of the time base to create.
+     *
+     * @return the created and registered time base object.
+     */
+    public static TimeBaseObject createTimeBase (String timeBase)
+    {
+        TimeBaseObject object = _omgr.registerObject(new TimeBaseObject());
+        _timeBases.put(timeBase, object);
+        return object;
+    }
+
+    /**
+     * Returns the named timebase object, or null if no time base object has been created with that
+     * name.
+     */
+    public static TimeBaseObject getTimeBase (String timeBase)
+    {
+        return _timeBases.get(timeBase);
+    }
+
+    /**
+     * Processes a request from a client to fetch the oid of the specified time object.
+     */
+    public void getTimeOid (ClientObject source, String timeBase, GotTimeBaseListener listener)
+        throws InvocationException
+    {
+        // look up the time base object in question
+        TimeBaseObject time = getTimeBase(timeBase);
+        if (time == null) {
+            throw new InvocationException(NO_SUCH_TIME_BASE);
+        }
+        // and send the response
+        listener.gotTimeOid(time.getOid());
+    }
+
+    /** Used to keep track of our time base objects. */
+    protected static HashMap<String,TimeBaseObject> _timeBases = Maps.newHashMap();
+
+    /** The invocation manager with which we interoperate. */
+    protected static InvocationManager _invmgr;
+
+    /** The distributed object manager with which we interoperate. */
+    protected static RootDObjectManager _omgr;
+}