/*

 * 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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.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.*;

import com.sun.tools.hat.internal.oql.*;

import com.sun.tools.hat.internal.util.ArraySorter;

import com.sun.tools.hat.internal.util.Comparer;

/**

 * This handles Object Query Language (OQL) queries.

 *

 * @author A. Sundararajan

 */

class OQLQuery extends QueryHandler {

    public OQLQuery(OQLEngine engine) {

        this.engine = engine;

    }

    public void run() {

        startHtml("Object Query Language (OQL) query");

        String oql = null;

        if (query != null && !query.equals("")) {

            int index = query.indexOf("?query=");

            if (index != -1 && query.length() > 7) {

                oql = query.substring(index + 7);

            }

        }

        out.println("<p align='center'><table>");

        out.println("<tr><td><b>");

        out.println("<a href='/'>All Classes (excluding platform)</a>");

        out.println("</b></td>");

        out.println("<td><b><a href='/oqlhelp/'>OQL Help</a></b></td></tr>");

        out.println("</table></p>");

        out.println("<form action='/oql/' method='get'>");

        out.println("<p align='center'>");

        out.println("<textarea name='query' cols=80 rows=10>");

        if (oql != null) {

            out.println(oql);

        }

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

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

        out.println("<p align='center'>");

        out.println("<input type='submit' value='Execute'></input>");

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

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

        if (oql != null) {

            executeQuery(oql);

        }

        endHtml();

    }

    private void executeQuery(String q) {

        try {

            out.println("<table border='1'>");

            engine.executeQuery(q, new ObjectVisitor() {

                     public boolean visit(Object o) {

                         out.println("<tr><td>");

                         try {

                             out.println(engine.toHtml(o));

                         } catch (Exception e) {

                             out.println(e.getMessage());

                             out.println("<pre>");

                             e.printStackTrace(out);

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

                         }

                         out.println("</td></tr>");

                         return false;

                     }

                 });

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

        } catch (OQLException exp) {

            out.println(exp.getMessage());

            out.println("<pre>");

            exp.printStackTrace(out);

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

        }

    }

    private OQLEngine engine;

}