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/*
 * @(#) Log.java 
 *
 * JOTM: Java Open Transaction Manager 
 *
 *
 * This module was originally developed by 
 *
 *  - Bull S.A. as part of the JOnAS application server code released in 
 *    July 1999 (www.bull.com)
 * 
 * --------------------------------------------------------------------------
 *  The original code and portions created by Bull SA are 
 *  Copyright (c) 1999 BULL SA  
 *  All rights reserved.
 *  
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 *
 * -Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer. 
 *
 * -Redistributions in binary form must reproduce the above copyright notice, 
 * this list of conditions and the following disclaimer in the documentation 
 * and/or other materials provided with the distribution. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 *
 * --------------------------------------------------------------------------
 * $Id: Log.java,v 1.11 2003-12-10 20:06:26 trentshue Exp $
 * --------------------------------------------------------------------------
 */

package org.objectweb.jotm;

import java.util.Vector;

/**
 * Log associated to a transaction
 */
class Log {

    /**
     * Constructor
     */
    public Log() {
        if (TraceTm.jotm.isDebugEnabled()) {
            TraceTm.jotm.debug("Log constructor");
        }
    }

    /**
     * add a Resource to the log
     */
    public void addResource(Resource res) {
    	if (TraceTm.jotm.isDebugEnabled()) {
            TraceTm.jotm.debug("res="+ res);
        }
        ResourceInfo ri = new ResourceInfo(res);
        resourceLogged.addElement(ri);
    }

    /**
     * flush Log with decision about the transaction
     */
    public void flushLog(int decide) {
		if (TraceTm.jotm.isDebugEnabled()) {
            TraceTm.jotm.debug("decide="+ decide);
        }
        decision = decide;

        // XXX serialize log on disk
    }

    /**
     * forget log
     */
    public void forgetLog() {
		if (TraceTm.jotm.isDebugEnabled()) {
            TraceTm.jotm.debug("forget log");
        }

        // XXX remove file on disk
    }

    /**
     * update log
     */
    public void updateLog() {
		if (TraceTm.jotm.isDebugEnabled()) {
            TraceTm.jotm.debug("update log");
        }
        
        // XXX update log
    }

    // Resources registered (Vector of ResourceInfo)
    Vector resourceLogged = new Vector();

    // Decision
    static final int DECISION_TO_COMMIT = 1;
    static final int DECISION_TO_ROLLBACK = 2;
    int decision;

}