/* * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */  /* * The Original Code is HAT. The Initial Developer of the * Original Code is Bill Foote, with contributions from others * at JavaSoft/Sun. */ package com.sun.tools.hat.internal.server;  import com.sun.tools.hat.internal.model.*; /** * Query to show the StackTrace for a given root * * @author      Bill Foote */  class RootStackQuery extends QueryHandler {     public RootStackQuery() {    }     public void run() {        int index = (int) parseHex(query);        Root root = snapshot.getRootAt(index);        if (root == null) {            error("Root at " + index + " not found");            return;        }        StackTrace st = root.getStackTrace();        if (st == null || st.getFrames().length == 0) {            error("No stack trace for " + root.getDescription());            return;        }        startHtml("Stack Trace for " + root.getDescription());        out.println("<p>");        printStackTrace(st);        out.println("</p>");        endHtml();    } }