net.sf.regain.util.io
Class MemoryAppender

java.lang.Object
  org.apache.log4j.AppenderSkeleton
      net.sf.regain.util.io.MemoryAppender

All Implemented Interfaces:

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

public class MemoryAppender
extends org.apache.log4j.AppenderSkeleton

A Log4j appender that keeps a number of logging events in memory. These events may be layouted on demand.

Author:

Til Schneider, www.murfman.de

Field Summary

private LinkedList	mCache Holds the cached log messages.
private int	mMaxCacheSize The maximum cache size.

Fields inherited from class org.apache.log4j.AppenderSkeleton

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

Constructor Summary

MemoryAppender()
Creates a new MemoryAppender instance.

Method Summary

protected void	append(org.apache.log4j.spi.LoggingEvent evt)
void	close()
void	printLog(Printer printer) Prints the cached logging events to a page printer.
boolean	requiresLayout()
void	setMaxCacheSize(int maxCacheSize) Sets the maximum cache size.

Methods inherited from class org.apache.log4j.AppenderSkeleton

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

Methods inherited from class java.lang.Object

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

Field Detail

mCache

private LinkedList mCache

Holds the cached log messages.

mMaxCacheSize

private int mMaxCacheSize

The maximum cache size.

Constructor Detail

MemoryAppender

public MemoryAppender()

Creates a new MemoryAppender instance.

Method Detail

setMaxCacheSize

public void setMaxCacheSize(int maxCacheSize)

Sets the maximum cache size.

Parameters:

maxCacheSize - the maximum cache size.

printLog

public void printLog(Printer printer)
              throws RegainException

Prints the cached logging events to a page printer.

Parameters:

printer - The page printer to print to.

Throws:

RegainException - If printing failed.

append

protected void append(org.apache.log4j.spi.LoggingEvent evt)

Specified by:

append in class org.apache.log4j.AppenderSkeleton

close

public void close()

Specified by:

close in interface org.apache.log4j.Appender

Specified by:

close in class org.apache.log4j.AppenderSkeleton

requiresLayout

public boolean requiresLayout()

Specified by:

requiresLayout in interface org.apache.log4j.Appender

Specified by:

requiresLayout in class org.apache.log4j.AppenderSkeleton