datasource.java

jcrontab是一个定时器开源项目包 目前提供存取文件或数据库, 把执行结果寄发 email, 简单地设置在 Tomcat, Resin, Jetty 及 JBoss 之上, 更是可以取代 cron

/**
 *  This file is part of the jcrontab package
 *  Copyright (C) 2001-2003 Israel Olalla
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA 02111-1307, USA
 *
 *  For questions, suggestions:
 *
 *  [e-mail]
 *
 */

package org.jcrontab.data;

/**
 * This interface says which methods a DataSource should have in
 * order to be compatible with the DataFactory
 * @author $Author: iolalla $
 * @version $Revision: 1.17 $
 */

public interface DataSource {
    /**
	 *	returns the only valid DataSource of this kind
	 * @return DataSource
	 */
        abstract DataSource getInstance();
	/**
	 *	searches  the CrontabEntryBean from the DataSource
	 * @return CrontabEntryBean
	 * @throws Exception
	 */
    	abstract CrontabEntryBean find(CrontabEntryBean ceb) throws Exception;
    /**
	 *	Gets all the CrontabEntryBean from the DataSource
	 * @return CrontabEntryBean[]
	 * @throws Exception
	 */
    	abstract CrontabEntryBean[] findAll() throws Exception;
    /**
	 *	stores CrontabEntryBean in  the DataSource
	 * @param CrontabEntryBean
	 * @throws Exception
	 */
    	abstract void store(CrontabEntryBean ceb) throws Exception,
        	DataNotFoundException;
    /**
	 *	stores CrontabEntryBean in  the DataSource
	 * @param CrontabEntryBean list
	 * @throws Exception
	 */
    	abstract void store(CrontabEntryBean[] ceb) throws Exception,
        	DataNotFoundException;
    /**
	 * removes CrontabEntryBean from the DataSource
	 * @param CrontabEntryBean
	 * @throws Exception
	 */
    	abstract void remove(CrontabEntryBean[] ceb) throws Exception;
}