/*

 * 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.*;

/**

 *

 * @author      Bill Foote

 */

class ReachableQuery extends QueryHandler {

        // We inherit printFullClass from ClassQuery

    public ReachableQuery() {

    }

    public void run() {

        startHtml("Objects Reachable From " + query);

        long id = parseHex(query);

        JavaHeapObject root = snapshot.findThing(id);

        ReachableObjects ro = new ReachableObjects(root,

                                   snapshot.getReachableExcludes());

        // Now, print out the sorted list, but start with root

        long totalSize = ro.getTotalSize();

        JavaThing[] things = ro.getReachables();

        long instances = things.length;

        out.print("<strong>");

        printThing(root);

        out.println("</strong><br>");

        out.println("<br>");

        for (int i = 0; i < things.length; i++) {

            printThing(things[i]);

            out.println("<br>");

        }

        printFields(ro.getUsedFields(), "Data Members Followed");

        printFields(ro.getExcludedFields(), "Excluded Data Members");

        out.println("<h2>Total of " + instances + " instances occupying " + totalSize + " bytes.</h2>");

        endHtml();

    }

    private void printFields(String[] fields, String title) {

        if (fields.length == 0) {

            return;

        }

        out.print("<h3>");

        print(title);

        out.println("</h3>");

        for (int i = 0; i < fields.length; i++) {

            print(fields[i]);

            out.println("<br>");

        }

    }

}