imcode.util.log
Class DailyRollingFileAppender

java.lang.Object
  org.apache.log4j.AppenderSkeleton
      org.apache.log4j.WriterAppender
          org.apache.log4j.FileAppender
              imcode.util.log.DailyRollingFileAppender

All Implemented Interfaces:

org.apache.log4j.Appender, org.apache.log4j.spi.OptionHandler

public class DailyRollingFileAppender
extends org.apache.log4j.FileAppender

Complete ripoff of org.apache.log4j.DailyRollingFileAppender in log4j 1.2.8, since it has bugs and was impossible to subclass.

Field Summary

Fields inherited from class org.apache.log4j.FileAppender

bufferedIO, bufferSize, fileAppend, fileName

Fields inherited from class org.apache.log4j.WriterAppender

encoding, immediateFlush, qw

Fields inherited from class org.apache.log4j.AppenderSkeleton

closed, errorHandler, headFilter, layout, name, tailFilter, threshold

Constructor Summary

DailyRollingFileAppender()
The default constructor does nothing.

DailyRollingFileAppender(org.apache.log4j.Layout layout, java.lang.String filename, java.lang.String datePattern)
Instantiate a DailyRollingFileAppender and open the file designated by filename.

Method Summary

void	activateOptions()
void	setDatePattern(java.lang.String pattern) The DatePattern takes a string in the same format as expected by SimpleDateFormat.
protected void	subAppend(org.apache.log4j.spi.LoggingEvent event) This method differentiates DailyRollingFileAppender from its super class.

Methods inherited from class org.apache.log4j.FileAppender

closeFile, getAppend, getBufferedIO, getBufferSize, getFile, reset, setAppend, setBufferedIO, setBufferSize, setFile, setFile, setQWForFiles

Methods inherited from class org.apache.log4j.WriterAppender

append, checkEntryConditions, close, closeWriter, createWriter, getEncoding, getImmediateFlush, requiresLayout, setEncoding, setErrorHandler, setImmediateFlush, setWriter, writeFooter, writeHeader

Methods inherited from class org.apache.log4j.AppenderSkeleton

addFilter, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setLayout, setName, setThreshold

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DailyRollingFileAppender

public DailyRollingFileAppender()

The default constructor does nothing.

DailyRollingFileAppender

public DailyRollingFileAppender(org.apache.log4j.Layout layout,
                                java.lang.String filename,
                                java.lang.String datePattern)
                         throws java.io.IOException

Instantiate a DailyRollingFileAppender and open the file designated by filename. The opened filename will become the ouput destination for this appender.

Throws:

java.io.IOException

Method Detail

setDatePattern

public void setDatePattern(java.lang.String pattern)

The DatePattern takes a string in the same format as expected by SimpleDateFormat. This options determines the rollover schedule.

activateOptions

public void activateOptions()

Specified by:

activateOptions in interface org.apache.log4j.spi.OptionHandler

Overrides:

activateOptions in class org.apache.log4j.FileAppender

subAppend

protected void subAppend(org.apache.log4j.spi.LoggingEvent event)

This method differentiates DailyRollingFileAppender from its super class.

Before actually logging, this method will check whether it is time to do a rollover. If it is, it will schedule the next rollover time and then rollover.

Overrides:

subAppend in class org.apache.log4j.WriterAppender