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package com.greenpepper.samples.application.phonebook;

import org.hibernate.Session;

/**
 * 
 * Copyright (c) 2005 Pyxis technologies inc. All Rights Reserved.
 *
 * @author gcarey
 * @version $Id: $Id
 */
public interface SessionService
{    
    /**
     * Starts the database session
     */
    void startSession();
    
    /**
     * Retrieves the database session
     *
     * @return the database session
     */
    Session getSession();
    
    /**
     * Ends the database session
     */
    void closeSession();
    
    
    /**
     * Starts a transaction
     */
    void beginTransaction();
    
    /**
     * Commits the transaction.
     */
    void commitTransaction();
    
    /**
     * Rollbacks the transaction.
     */
    void rollbackTransaction();
}