<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--NewPage--> <HTML> <HEAD> <!-- Generated by javadoc (build 1.7.0-internal) on Tue Mar 04 15:24:49 EST 2008 --> <TITLE> org.apache.log4j.spi (Log4j Version 1.2.14) </TITLE> <META NAME="date" CONTENT="2008-03-04"> <LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"> <SCRIPT type="text/javascript"> function windowTitle() { if (location.href.indexOf('is-external=true') == -1) { parent.document.title="org.apache.log4j.spi (Log4j Version 1.2.14)"; } } </SCRIPT> <NOSCRIPT> </NOSCRIPT> </HEAD> <BODY BGCOLOR="white" onload="windowTitle();"> <HR> <!-- ========= START OF TOP NAVBAR ======= --> <A NAME="navbar_top"><!-- --></A> <A HREF="#skip-navbar_top" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_top_firstrow"><!-- 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CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> <b>Log4j 1.2.14</b></EM> </TD> </TR> <TR> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/apache/log4j/performance/package-summary.html"><B>PREV PACKAGE</B></A> <A HREF="../../../../org/apache/log4j/varia/package-summary.html"><B>NEXT PACKAGE</B></A></FONT></TD> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/apache/log4j/spi/package-summary.html" target="_top"><B>FRAMES</B></A> <A HREF="package-summary.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--> </SCRIPT> <NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A> </NOSCRIPT> </FONT></TD> </TR> </TABLE> <A NAME="skip-navbar_top"></A> <!-- ========= END OF TOP NAVBAR ========= --> <HR> <H2> Package org.apache.log4j.spi </H2> Contains part of the System Programming Interface (SPI) needed to extend log4j. <P> <B>See:</B> <BR> <A HREF="#package_description"><B>Description</B></A> <P> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> <B>Interface Summary</B></FONT></TH> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/AppenderAttachable.html" title="interface in org.apache.log4j.spi">AppenderAttachable</A></B></TD> <TD>Interface for attaching appenders to objects.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/Configurator.html" title="interface in org.apache.log4j.spi">Configurator</A></B></TD> <TD>Implemented by classes capable of configuring log4j using a URL.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/ErrorCode.html" title="interface in org.apache.log4j.spi">ErrorCode</A></B></TD> <TD>This interface defines commonly encoutered error codes.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A></B></TD> <TD>Appenders may delegate their error handling to <code>ErrorHandlers</code>.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/HierarchyEventListener.html" title="interface in org.apache.log4j.spi">HierarchyEventListener</A></B></TD> <TD>Listen to events occuring within a <A HREF="../../../../org/apache/log4j/Hierarchy.html" title="class in org.apache.log4j"><CODE>Hierarchy</CODE></A>.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/LoggerFactory.html" title="interface in org.apache.log4j.spi">LoggerFactory</A></B></TD> <TD>Implement this interface to create new instances of Logger or a sub-class of Logger.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/LoggerRepository.html" title="interface in org.apache.log4j.spi">LoggerRepository</A></B></TD> <TD>A <code>LoggerRepository</code> is used to create and retrieve <code>Loggers</code>.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</A></B></TD> <TD>A string based interface to configure package components.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/RendererSupport.html" title="interface in org.apache.log4j.spi">RendererSupport</A></B></TD> <TD> </TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/RepositorySelector.html" title="interface in org.apache.log4j.spi">RepositorySelector</A></B></TD> <TD>The <code>LogManager</code> uses one (and only one) <code>RepositorySelector</code> implementation to select the <A HREF="../../../../org/apache/log4j/spi/LoggerRepository.html" title="interface in org.apache.log4j.spi"><CODE>LoggerRepository</CODE></A> for a particular application context.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/TriggeringEventEvaluator.html" title="interface in org.apache.log4j.spi">TriggeringEventEvaluator</A></B></TD> <TD>Implementions of this interface allow certain appenders to decide when to perform an appender specific action.</TD> </TR> </TABLE> <P> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> <B>Class Summary</B></FONT></TH> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/DefaultRepositorySelector.html" title="class in org.apache.log4j.spi">DefaultRepositorySelector</A></B></TD> <TD> </TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/Filter.html" title="class in org.apache.log4j.spi">Filter</A></B></TD> <TD>Users should extend this class to implement customized logging event filtering.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/LocationInfo.html" title="class in org.apache.log4j.spi">LocationInfo</A></B></TD> <TD>The internal representation of caller location information.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A></B></TD> <TD>The internal representation of logging events.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/RootCategory.html" title="class in org.apache.log4j.spi">RootCategory</A></B></TD> <TD><B>Deprecated.</B> <I>Replaced by <A HREF="../../../../org/apache/log4j/spi/RootLogger.html" title="class in org.apache.log4j.spi"><CODE>RootLogger</CODE></A>.</I></TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/RootLogger.html" title="class in org.apache.log4j.spi">RootLogger</A></B></TD> <TD>RootLogger sits at the top of the logger hierachy.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD WIDTH="15%"><B><A HREF="../../../../org/apache/log4j/spi/ThrowableInformation.html" title="class in org.apache.log4j.spi">ThrowableInformation</A></B></TD> <TD>ThrowableInformation is log4j's internal representation of throwables.</TD> </TR> </TABLE> <P> <A NAME="package_description"><!-- --></A><H2> Package org.apache.log4j.spi Description </H2> <P> Contains part of the System Programming Interface (SPI) needed to extend log4j. <P> <P> <DL> </DL> <HR> <!-- ======= START OF BOTTOM NAVBAR ====== --> <A NAME="navbar_bottom"><!-- --></A> <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_bottom_firstrow"><!-- --></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT 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