A handy utility method.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3246 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/util/InvocationUtil.java

@@ -0,0 +1,56 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/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.util;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+import com.samskivert.util.StringUtil;
+
+import com.threerings.presents.Log;
+import com.threerings.presents.client.InvocationService.ResultListener;
+
+/**
+ * Invocation service related utilities.
+ */
+public class InvocationUtil
+{
+    /**
+     * Safely iterates over the supplied collection of {@link
+     * ResultListener}s and calls {@link ResultListener#requestCompleted}
+     * on them, catching any exceptions they might thow and logging an
+     * error, then proceeding to the next listener.
+     */
+    public static void safeNotify (Collection listeners, Object result)
+    {
+        for (Iterator iter = listeners.iterator(); iter.hasNext(); ) {
+            ResultListener rl = (ResultListener)iter.next();
+            try {
+                rl.requestProcessed(result);
+            } catch (Throwable t) {
+                Log.warning("Result listener choked in requestProcessed() " +
+                            "[listener=" + StringUtil.safeToString(rl) + "].");
+                Log.logStackTrace(t);
+            }
+        }
+    }
+}