/*  * Copyright 2004-2005 OpenSymphony  *  * Licensed under the Apache License, Version 2.0 (the "License"); you may not  * use this file except in compliance with the License. You may obtain a copy  * of the License at  *  *   http://www.apache.org/licenses/LICENSE-2.0  *    * Unless required by applicable law or agreed to in writing, software  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the  * License for the specific language governing permissions and limitations  * under the License. *  *//* * Previously Copyright (c) 2001-2004 James House */package org.quartz;import java.util.Collection;/** * <p> * Provides a mechanism for obtaining client-usable handles to <code>Scheduler</code> * instances. * </p> *  * @see Scheduler * @see org.quartz.impl.StdSchedulerFactory *  * @author James House */public interface SchedulerFactory {    /*     * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     *      * Interface.     *      * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     */    /**     * <p>     * Returns a client-usable handle to a <code>Scheduler</code>.     * </p>     *      * @throws SchedulerException     *           if there is a problem with the underlying <code>Scheduler</code>.     */    Scheduler getScheduler() throws SchedulerException;    /**     * <p>     * Returns a handle to the Scheduler with the given name, if it exists.     * </p>     */    Scheduler getScheduler(String schedName) throws SchedulerException;    /**     * <p>     * Returns handles to all known Schedulers (made by any SchedulerFactory     * within this jvm.).     * </p>     */    Collection getAllSchedulers() throws SchedulerException;}