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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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FallbackErrorHandler (Log4j Version 1.2.16)
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<b>Log4j 1.2.16</b><!--  Licensed to the Apache Software Foundation (ASF) under one or more  contributor license agreements.  See the NOTICE file distributed with  this work for additional information regarding copyright ownership.  The ASF licenses this file to You 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. --></EM>
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org.apache.log4j.varia</FONT>
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Class FallbackErrorHandler</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.log4j.varia.FallbackErrorHandler</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A>, <A HREF="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>FallbackErrorHandler</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></DL>
</PRE>

<P>
The <code>FallbackErrorHandler</code> implements the ErrorHandler
 interface such that a secondary appender may be specified.  This
 secondary appender takes over if the primary appender fails for
 whatever reason.

 <p>The error message is printed on <code>System.err</code>, and
 logged in the new secondary appender.
<P>

<P>
<DL>
<DT><B>Author:</B></DT>
  <DD>Ceki G&uuml;c&uuml;</DD>
</DL>
<HR>

<P>

<!-- ======== CONSTRUCTOR SUMMARY ======== -->

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<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#FallbackErrorHandler()">FallbackErrorHandler</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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&nbsp;
<!-- ========== METHOD SUMMARY =========== -->

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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#activateOptions()">activateOptions</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;No options to activate.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#error(java.lang.String)">error</A></B>(java.lang.String&nbsp;message)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Print a the error message passed as parameter on
     <code>System.err</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#error(java.lang.String, java.lang.Exception, int)">error</A></B>(java.lang.String&nbsp;message,
      java.lang.Exception&nbsp;e,
      int&nbsp;errorCode)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prints the message and the stack trace of the exception on
     <code>System.err</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#error(java.lang.String, java.lang.Exception, int, org.apache.log4j.spi.LoggingEvent)">error</A></B>(java.lang.String&nbsp;message,
      java.lang.Exception&nbsp;e,
      int&nbsp;errorCode,
      <A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A>&nbsp;event)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prints the message and the stack trace of the exception on
     <code>System.err</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#setAppender(org.apache.log4j.Appender)">setAppender</A></B>(<A HREF="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A>&nbsp;primary)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The appender to which this error handler is attached.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#setBackupAppender(org.apache.log4j.Appender)">setBackupAppender</A></B>(<A HREF="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A>&nbsp;backup)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the backup appender.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/log4j/varia/FallbackErrorHandler.html#setLogger(org.apache.log4j.Logger)">setLogger</A></B>(<A HREF="../../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j">Logger</A>&nbsp;logger)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<em>Adds</em> the logger passed as parameter to the list of
     loggers that we need to search for in case of appender failure.</TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="FallbackErrorHandler()"><!-- --></A><H3>
FallbackErrorHandler</H3>
<PRE>
public <B>FallbackErrorHandler</B>()</PRE>
<DL>
</DL>

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<A NAME="setLogger(org.apache.log4j.Logger)"><!-- --></A><H3>
setLogger</H3>
<PRE>
public void <B>setLogger</B>(<A HREF="../../../../org/apache/log4j/Logger.html" title="class in org.apache.log4j">Logger</A>&nbsp;logger)</PRE>
<DL>
<DD><em>Adds</em> the logger passed as parameter to the list of
     loggers that we need to search for in case of appender failure.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html#setLogger(org.apache.log4j.Logger)">setLogger</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>logger</CODE> - One of the loggers that will be searched for the failing
     appender in view of replacement.</DL>
</DD>
</DL>
<HR>

<A NAME="activateOptions()"><!-- --></A><H3>
activateOptions</H3>
<PRE>
public void <B>activateOptions</B>()</PRE>
<DL>
<DD>No options to activate.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/OptionHandler.html#activateOptions()">activateOptions</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="error(java.lang.String, java.lang.Exception, int)"><!-- --></A><H3>
error</H3>
<PRE>
public void <B>error</B>(java.lang.String&nbsp;message,
                  java.lang.Exception&nbsp;e,
                  int&nbsp;errorCode)</PRE>
<DL>
<DD>Prints the message and the stack trace of the exception on
     <code>System.err</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html#error(java.lang.String, java.lang.Exception, int)">error</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="error(java.lang.String, java.lang.Exception, int, org.apache.log4j.spi.LoggingEvent)"><!-- --></A><H3>
error</H3>
<PRE>
public void <B>error</B>(java.lang.String&nbsp;message,
                  java.lang.Exception&nbsp;e,
                  int&nbsp;errorCode,
                  <A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A>&nbsp;event)</PRE>
<DL>
<DD>Prints the message and the stack trace of the exception on
     <code>System.err</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html#error(java.lang.String, java.lang.Exception, int, org.apache.log4j.spi.LoggingEvent)">error</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>message</CODE> - The message assoicated with the error.<DD><CODE>e</CODE> - The Exption that was thrown when the error occured.<DD><CODE>errorCode</CODE> - The error code associated with the error.<DD><CODE>event</CODE> - The logging event that the failing appender is asked
            to log.</DL>
</DD>
</DL>
<HR>

<A NAME="error(java.lang.String)"><!-- --></A><H3>
error</H3>
<PRE>
public void <B>error</B>(java.lang.String&nbsp;message)</PRE>
<DL>
<DD>Print a the error message passed as parameter on
     <code>System.err</code>.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html#error(java.lang.String)">error</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setAppender(org.apache.log4j.Appender)"><!-- --></A><H3>
setAppender</H3>
<PRE>
public void <B>setAppender</B>(<A HREF="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A>&nbsp;primary)</PRE>
<DL>
<DD>The appender to which this error handler is attached.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html#setAppender(org.apache.log4j.Appender)">setAppender</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setBackupAppender(org.apache.log4j.Appender)"><!-- --></A><H3>
setBackupAppender</H3>
<PRE>
public void <B>setBackupAppender</B>(<A HREF="../../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A>&nbsp;backup)</PRE>
<DL>
<DD>Set the backup appender.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html#setBackupAppender(org.apache.log4j.Appender)">setBackupAppender</A></CODE> in interface <CODE><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
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