jkfappender.java

主要是对串口驱动的的一些控制源码！！！ 在下载javacomm20-win32.zip后就可以使用。

/**
 * $Log: JKFAppender.java,v $
 * Revision 1.1  2003/01/16 13:08:54  mwulff
 * initial version
 *
 * Revision 1.1  2002/12/15 16:51:32  mwulff
 * moved
 *
 * Revision 1.1  2002/12/05 21:33:37  mwulff
 * moved
 *
 * Revision 1.2  2002/12/01 13:03:43  mwulff
 * accomodated to ClientLoggingManager,
 * that is now implemented as singleton
 *
 * Revision 1.1  2002/11/05 19:46:04  mwulff
 * initial version
 *
 */
package de.fhm.jkf.resource.cl;

import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.Level;
import org.apache.log4j.spi.LoggingEvent;

import de.fhm.jkf.comm.cl.RemoteLogBuffer;

/**
 * @author	marten wulff
 * 
 * JKFAppender is used for retrieving client LoggingEvents, that
 * should be transfered to the server. The method 
 * append(LoggingEvent) stores the occured LoggingEvent
 * in the RemoteLogBuffer.
 */
public class JKFAppender extends AppenderSkeleton {

	private static RemoteLogBuffer logBuffer = RemoteLogBuffer.instance();
	
	/**
	 * Constructor for JKFAppender.
	 */
	public JKFAppender() {
		super();		
	}

	/**
	 * @see org.apache.log4j.AppenderSkeleton#append(LoggingEvent)
	 */
	protected void append(LoggingEvent ev) {
		logBuffer.addLogMessage(ev);
	}

	/**
	 * @see org.apache.log4j.Appender#requiresLayout()
	 */
	public boolean requiresLayout() {
		return false;
	}

	/**
	 * @see org.apache.log4j.Appender#close()
	 */
	public void close() {
		// nothing to do here
	}
	
	/**
	 * Method for changing the treshold of this appender.
	 * This method can only be called from classes in the same package
	 * so that client applications cannot change the treshold level.
	 */
	void changeTreshold(Level newThreshold) {
		setThreshold(newThreshold);
	}

}