/*

 * 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();

    }

}