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| WriterAppender (Apache Log4j 1.2.17 API) |
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| org.apache.log4j</FONT> |
| <BR> |
| Class WriterAppender</H2> |
| <PRE> |
| <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A> |
| <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">org.apache.log4j.AppenderSkeleton</A> |
| <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>org.apache.log4j.WriterAppender</B> |
| </PRE> |
| <DL> |
| <DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A>, <A HREF="../../../org/apache/log4j/spi/OptionHandler.html" title="interface in org.apache.log4j.spi">OptionHandler</A></DD> |
| </DL> |
| <DL> |
| <DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../org/apache/log4j/ConsoleAppender.html" title="class in org.apache.log4j">ConsoleAppender</A>, <A HREF="../../../org/apache/log4j/FileAppender.html" title="class in org.apache.log4j">FileAppender</A></DD> |
| </DL> |
| <HR> |
| <DL> |
| <DT><PRE>public class <B>WriterAppender</B><DT>extends <A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></DL> |
| </PRE> |
| |
| <P> |
| WriterAppender appends log events to a <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io"><CODE>Writer</CODE></A> or an |
| <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><CODE>OutputStream</CODE></A> depending on the user's choice. |
| <P> |
| |
| <P> |
| <DL> |
| <DT><B>Since:</B></DT> |
| <DD>1.1</DD> |
| <DT><B>Author:</B></DT> |
| <DD>Ceki Gülcü</DD> |
| </DL> |
| <HR> |
| |
| <P> |
| <!-- =========== FIELD SUMMARY =========== --> |
| |
| <A NAME="field_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Field Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#encoding">encoding</A></B></CODE> |
| |
| <BR> |
| The encoding to use when writing.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#immediateFlush">immediateFlush</A></B></CODE> |
| |
| <BR> |
| Immediate flush means that the underlying writer or output stream |
| will be flushed at the end of each append operation unless shouldFlush() |
| is overridden.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected <A HREF="../../../org/apache/log4j/helpers/QuietWriter.html" title="class in org.apache.log4j.helpers">QuietWriter</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#qw">qw</A></B></CODE> |
| |
| <BR> |
| This is the <A HREF="../../../org/apache/log4j/helpers/QuietWriter.html" title="class in org.apache.log4j.helpers"><CODE>quietWriter</CODE></A> where we will write |
| to.</TD> |
| </TR> |
| </TABLE> |
| <A NAME="fields_inherited_from_class_org.apache.log4j.AppenderSkeleton"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
| <TH ALIGN="left"><B>Fields inherited from class org.apache.log4j.<A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></B></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html#closed">closed</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#errorHandler">errorHandler</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#headFilter">headFilter</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#layout">layout</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#name">name</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#tailFilter">tailFilter</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#threshold">threshold</A></CODE></TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| |
| <A NAME="constructor_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Constructor Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#WriterAppender()">WriterAppender</A></B>()</CODE> |
| |
| <BR> |
| This default constructor does nothing.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#WriterAppender(org.apache.log4j.Layout, java.io.OutputStream)">WriterAppender</A></B>(<A HREF="../../../org/apache/log4j/Layout.html" title="class in org.apache.log4j">Layout</A> layout, |
| <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A> os)</CODE> |
| |
| <BR> |
| Instantiate a WriterAppender and set the output destination to a |
| new <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStreamWriter.html?is-external=true" title="class or interface in java.io"><CODE>OutputStreamWriter</CODE></A> initialized with <code>os</code> |
| as its <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><CODE>OutputStream</CODE></A>.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#WriterAppender(org.apache.log4j.Layout, java.io.Writer)">WriterAppender</A></B>(<A HREF="../../../org/apache/log4j/Layout.html" title="class in org.apache.log4j">Layout</A> layout, |
| <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io">Writer</A> writer)</CODE> |
| |
| <BR> |
| Instantiate a WriterAppender and set the output destination to |
| <code>writer</code>.</TD> |
| </TR> |
| </TABLE> |
| |
| <!-- ========== METHOD SUMMARY =========== --> |
| |
| <A NAME="method_summary"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> |
| <B>Method Summary</B></FONT></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#activateOptions()">activateOptions</A></B>()</CODE> |
| |
| <BR> |
| Does nothing.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#append(org.apache.log4j.spi.LoggingEvent)">append</A></B>(<A HREF="../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A> event)</CODE> |
| |
| <BR> |
| This method is called by the <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#doAppend(org.apache.log4j.spi.LoggingEvent)"><CODE>AppenderSkeleton.doAppend(org.apache.log4j.spi.LoggingEvent)</CODE></A> |
| method.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#checkEntryConditions()">checkEntryConditions</A></B>()</CODE> |
| |
| <BR> |
| This method determines if there is a sense in attempting to append.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#close()">close</A></B>()</CODE> |
| |
| <BR> |
| Close this appender instance.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#closeWriter()">closeWriter</A></B>()</CODE> |
| |
| <BR> |
| Close the underlying <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io"><CODE>Writer</CODE></A>.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStreamWriter.html?is-external=true" title="class or interface in java.io">OutputStreamWriter</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#createWriter(java.io.OutputStream)">createWriter</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A> os)</CODE> |
| |
| <BR> |
| Returns an OutputStreamWriter when passed an OutputStream.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#getEncoding()">getEncoding</A></B>()</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#getImmediateFlush()">getImmediateFlush</A></B>()</CODE> |
| |
| <BR> |
| Returns value of the <b>ImmediateFlush</b> option.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#requiresLayout()">requiresLayout</A></B>()</CODE> |
| |
| <BR> |
| The WriterAppender requires a layout.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#reset()">reset</A></B>()</CODE> |
| |
| <BR> |
| Clear internal references to the writer and other variables.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#setEncoding(java.lang.String)">setEncoding</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> value)</CODE> |
| |
| <BR> |
| </TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#setErrorHandler(org.apache.log4j.spi.ErrorHandler)">setErrorHandler</A></B>(<A HREF="../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A> eh)</CODE> |
| |
| <BR> |
| Set the <A HREF="../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi"><CODE>ErrorHandler</CODE></A> for this WriterAppender and also the |
| underlying <A HREF="../../../org/apache/log4j/helpers/QuietWriter.html" title="class in org.apache.log4j.helpers"><CODE>QuietWriter</CODE></A> if any.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#setImmediateFlush(boolean)">setImmediateFlush</A></B>(boolean value)</CODE> |
| |
| <BR> |
| If the <b>ImmediateFlush</b> option is set to |
| <code>true</code>, the appender will flush at the end of each |
| write.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE> void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#setWriter(java.io.Writer)">setWriter</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io">Writer</A> writer)</CODE> |
| |
| <BR> |
| Sets the Writer where the log output will go.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected boolean</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#shouldFlush(org.apache.log4j.spi.LoggingEvent)">shouldFlush</A></B>(<A HREF="../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A> event)</CODE> |
| |
| <BR> |
| Determines whether the writer should be flushed after |
| this event is written.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#subAppend(org.apache.log4j.spi.LoggingEvent)">subAppend</A></B>(<A HREF="../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A> event)</CODE> |
| |
| <BR> |
| Actual writing occurs here.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#writeFooter()">writeFooter</A></B>()</CODE> |
| |
| <BR> |
| Write a footer as produced by the embedded layout's <A HREF="../../../org/apache/log4j/Layout.html#getFooter()"><CODE>Layout.getFooter()</CODE></A> method.</TD> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> |
| <CODE>protected void</CODE></FONT></TD> |
| <TD><CODE><B><A HREF="../../../org/apache/log4j/WriterAppender.html#writeHeader()">writeHeader</A></B>()</CODE> |
| |
| <BR> |
| Write a header as produced by the embedded layout's <A HREF="../../../org/apache/log4j/Layout.html#getHeader()"><CODE>Layout.getHeader()</CODE></A> method.</TD> |
| </TR> |
| </TABLE> |
| <A NAME="methods_inherited_from_class_org.apache.log4j.AppenderSkeleton"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
| <TH ALIGN="left"><B>Methods inherited from class org.apache.log4j.<A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></B></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html#addFilter(org.apache.log4j.spi.Filter)">addFilter</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#clearFilters()">clearFilters</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#doAppend(org.apache.log4j.spi.LoggingEvent)">doAppend</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#finalize()">finalize</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#getErrorHandler()">getErrorHandler</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#getFilter()">getFilter</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#getFirstFilter()">getFirstFilter</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#getLayout()">getLayout</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#getName()">getName</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#getThreshold()">getThreshold</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#isAsSevereAsThreshold(org.apache.log4j.Priority)">isAsSevereAsThreshold</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#setLayout(org.apache.log4j.Layout)">setLayout</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#setName(java.lang.String)">setName</A>, <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#setThreshold(org.apache.log4j.Priority)">setThreshold</A></CODE></TD> |
| </TR> |
| </TABLE> |
| <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> |
| <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH> |
| </TR> |
| <TR BGCOLOR="white" CLASS="TableRowColor"> |
| <TD><CODE><A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> |
| </TR> |
| </TABLE> |
| |
| <P> |
| |
| <!-- ============ FIELD DETAIL =========== --> |
| |
| <A NAME="field_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Field Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="immediateFlush"><!-- --></A><H3> |
| immediateFlush</H3> |
| <PRE> |
| protected boolean <B>immediateFlush</B></PRE> |
| <DL> |
| <DD>Immediate flush means that the underlying writer or output stream |
| will be flushed at the end of each append operation unless shouldFlush() |
| is overridden. Immediate |
| flush is slower but ensures that each append request is actually |
| written. If <code>immediateFlush</code> is set to |
| <code>false</code>, then there is a good chance that the last few |
| logs events are not actually written to persistent media if and |
| when the application crashes. |
| |
| <p>The <code>immediateFlush</code> variable is set to |
| <code>true</code> by default. |
| <P> |
| <DL> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="encoding"><!-- --></A><H3> |
| encoding</H3> |
| <PRE> |
| protected <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>encoding</B></PRE> |
| <DL> |
| <DD>The encoding to use when writing. <p>The |
| <code>encoding</code> variable is set to <code>null</null> by |
| default which results in the utilization of the system's default |
| encoding. |
| <P> |
| <DL> |
| </DL> |
| </DL> |
| <HR> |
| |
| <A NAME="qw"><!-- --></A><H3> |
| qw</H3> |
| <PRE> |
| protected <A HREF="../../../org/apache/log4j/helpers/QuietWriter.html" title="class in org.apache.log4j.helpers">QuietWriter</A> <B>qw</B></PRE> |
| <DL> |
| <DD>This is the <A HREF="../../../org/apache/log4j/helpers/QuietWriter.html" title="class in org.apache.log4j.helpers"><CODE>quietWriter</CODE></A> where we will write |
| to. |
| <P> |
| <DL> |
| </DL> |
| </DL> |
| |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| |
| <A NAME="constructor_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Constructor Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="WriterAppender()"><!-- --></A><H3> |
| WriterAppender</H3> |
| <PRE> |
| public <B>WriterAppender</B>()</PRE> |
| <DL> |
| <DD>This default constructor does nothing. |
| <P> |
| </DL> |
| <HR> |
| |
| <A NAME="WriterAppender(org.apache.log4j.Layout, java.io.OutputStream)"><!-- --></A><H3> |
| WriterAppender</H3> |
| <PRE> |
| public <B>WriterAppender</B>(<A HREF="../../../org/apache/log4j/Layout.html" title="class in org.apache.log4j">Layout</A> layout, |
| <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A> os)</PRE> |
| <DL> |
| <DD>Instantiate a WriterAppender and set the output destination to a |
| new <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStreamWriter.html?is-external=true" title="class or interface in java.io"><CODE>OutputStreamWriter</CODE></A> initialized with <code>os</code> |
| as its <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><CODE>OutputStream</CODE></A>. |
| <P> |
| </DL> |
| <HR> |
| |
| <A NAME="WriterAppender(org.apache.log4j.Layout, java.io.Writer)"><!-- --></A><H3> |
| WriterAppender</H3> |
| <PRE> |
| public <B>WriterAppender</B>(<A HREF="../../../org/apache/log4j/Layout.html" title="class in org.apache.log4j">Layout</A> layout, |
| <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io">Writer</A> writer)</PRE> |
| <DL> |
| <DD>Instantiate a WriterAppender and set the output destination to |
| <code>writer</code>. |
| |
| <p>The <code>writer</code> must have been previously opened by |
| the user. |
| <P> |
| </DL> |
| |
| <!-- ============ METHOD DETAIL ========== --> |
| |
| <A NAME="method_detail"><!-- --></A> |
| <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> |
| <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> |
| <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> |
| <B>Method Detail</B></FONT></TH> |
| </TR> |
| </TABLE> |
| |
| <A NAME="setImmediateFlush(boolean)"><!-- --></A><H3> |
| setImmediateFlush</H3> |
| <PRE> |
| public void <B>setImmediateFlush</B>(boolean value)</PRE> |
| <DL> |
| <DD>If the <b>ImmediateFlush</b> option is set to |
| <code>true</code>, the appender will flush at the end of each |
| write. This is the default behavior. If the option is set to |
| <code>false</code>, then the underlying stream can defer writing |
| to physical medium to a later time. |
| |
| <p>Avoiding the flush operation at the end of each append results in |
| a performance gain of 10 to 20 percent. However, there is safety |
| tradeoff involved in skipping flushing. Indeed, when flushing is |
| skipped, then it is likely that the last few log events will not |
| be recorded on disk when the application exits. This is a high |
| price to pay even for a 20% performance gain. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getImmediateFlush()"><!-- --></A><H3> |
| getImmediateFlush</H3> |
| <PRE> |
| public boolean <B>getImmediateFlush</B>()</PRE> |
| <DL> |
| <DD>Returns value of the <b>ImmediateFlush</b> option. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="activateOptions()"><!-- --></A><H3> |
| activateOptions</H3> |
| <PRE> |
| public void <B>activateOptions</B>()</PRE> |
| <DL> |
| <DD>Does nothing. |
| <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><DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html#activateOptions()">activateOptions</A></CODE> in class <CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></CODE></DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="append(org.apache.log4j.spi.LoggingEvent)"><!-- --></A><H3> |
| append</H3> |
| <PRE> |
| public void <B>append</B>(<A HREF="../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A> event)</PRE> |
| <DL> |
| <DD>This method is called by the <A HREF="../../../org/apache/log4j/AppenderSkeleton.html#doAppend(org.apache.log4j.spi.LoggingEvent)"><CODE>AppenderSkeleton.doAppend(org.apache.log4j.spi.LoggingEvent)</CODE></A> |
| method. |
| |
| <p>If the output stream exists and is writable then write a log |
| statement to the output stream. Otherwise, write a single warning |
| message to <code>System.err</code>. |
| |
| <p>The format of the output will depend on this appender's |
| layout. |
| <P> |
| <DD><DL> |
| <DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html#append(org.apache.log4j.spi.LoggingEvent)">append</A></CODE> in class <CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></CODE></DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="checkEntryConditions()"><!-- --></A><H3> |
| checkEntryConditions</H3> |
| <PRE> |
| protected boolean <B>checkEntryConditions</B>()</PRE> |
| <DL> |
| <DD>This method determines if there is a sense in attempting to append. |
| |
| <p>It checks whether there is a set output target and also if |
| there is a set layout. If these checks fail, then the boolean |
| value <code>false</code> is returned. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="close()"><!-- --></A><H3> |
| close</H3> |
| <PRE> |
| public void <B>close</B>()</PRE> |
| <DL> |
| <DD>Close this appender instance. The underlying stream or writer is |
| also closed. |
| |
| <p>Closed appenders cannot be reused. |
| <P> |
| <DD><DL> |
| <DT><B>Since:</B></DT> |
| <DD>0.8.4</DD> |
| <DT><B>See Also:</B><DD><A HREF="../../../org/apache/log4j/WriterAppender.html#setWriter(java.io.Writer)"><CODE>setWriter(java.io.Writer)</CODE></A></DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="closeWriter()"><!-- --></A><H3> |
| closeWriter</H3> |
| <PRE> |
| protected void <B>closeWriter</B>()</PRE> |
| <DL> |
| <DD>Close the underlying <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io"><CODE>Writer</CODE></A>. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="createWriter(java.io.OutputStream)"><!-- --></A><H3> |
| createWriter</H3> |
| <PRE> |
| protected <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStreamWriter.html?is-external=true" title="class or interface in java.io">OutputStreamWriter</A> <B>createWriter</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</A> os)</PRE> |
| <DL> |
| <DD>Returns an OutputStreamWriter when passed an OutputStream. The |
| encoding used will depend on the value of the |
| <code>encoding</code> property. If the encoding value is |
| specified incorrectly the writer will be opened using the default |
| system encoding (an error message will be printed to the loglog. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="getEncoding()"><!-- --></A><H3> |
| getEncoding</H3> |
| <PRE> |
| public <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>getEncoding</B>()</PRE> |
| <DL> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="setEncoding(java.lang.String)"><!-- --></A><H3> |
| setEncoding</H3> |
| <PRE> |
| public void <B>setEncoding</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> value)</PRE> |
| <DL> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="setErrorHandler(org.apache.log4j.spi.ErrorHandler)"><!-- --></A><H3> |
| setErrorHandler</H3> |
| <PRE> |
| public void <B>setErrorHandler</B>(<A HREF="../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi">ErrorHandler</A> eh)</PRE> |
| <DL> |
| <DD>Set the <A HREF="../../../org/apache/log4j/spi/ErrorHandler.html" title="interface in org.apache.log4j.spi"><CODE>ErrorHandler</CODE></A> for this WriterAppender and also the |
| underlying <A HREF="../../../org/apache/log4j/helpers/QuietWriter.html" title="class in org.apache.log4j.helpers"><CODE>QuietWriter</CODE></A> if any. |
| <P> |
| <DD><DL> |
| <DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/apache/log4j/Appender.html#setErrorHandler(org.apache.log4j.spi.ErrorHandler)">setErrorHandler</A></CODE> in interface <CODE><A HREF="../../../org/apache/log4j/Appender.html" title="interface in org.apache.log4j">Appender</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html#setErrorHandler(org.apache.log4j.spi.ErrorHandler)">setErrorHandler</A></CODE> in class <CODE><A HREF="../../../org/apache/log4j/AppenderSkeleton.html" title="class in org.apache.log4j">AppenderSkeleton</A></CODE></DL> |
| </DD> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="setWriter(java.io.Writer)"><!-- --></A><H3> |
| setWriter</H3> |
| <PRE> |
| public void <B>setWriter</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/io/Writer.html?is-external=true" title="class or interface in java.io">Writer</A> writer)</PRE> |
| <DL> |
| <DD><p>Sets the Writer where the log output will go. The |
| specified Writer must be opened by the user and be |
| writable. |
| |
| <p>The <code>java.io.Writer</code> will be closed when the |
| appender instance is closed. |
| |
| |
| <p><b>WARNING:</b> Logging to an unopened Writer will fail. |
| <p> |
| <P> |
| <DD><DL> |
| <DT><B>Parameters:</B><DD><CODE>writer</CODE> - An already opened Writer.</DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="subAppend(org.apache.log4j.spi.LoggingEvent)"><!-- --></A><H3> |
| subAppend</H3> |
| <PRE> |
| protected void <B>subAppend</B>(<A HREF="../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A> event)</PRE> |
| <DL> |
| <DD>Actual writing occurs here. |
| |
| <p>Most subclasses of <code>WriterAppender</code> will need to |
| override this method. |
| <P> |
| <DD><DL> |
| <DT><B>Since:</B></DT> |
| <DD>0.9.0</DD> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="requiresLayout()"><!-- --></A><H3> |
| requiresLayout</H3> |
| <PRE> |
| public boolean <B>requiresLayout</B>()</PRE> |
| <DL> |
| <DD>The WriterAppender requires a layout. Hence, this method returns |
| <code>true</code>. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="reset()"><!-- --></A><H3> |
| reset</H3> |
| <PRE> |
| protected void <B>reset</B>()</PRE> |
| <DL> |
| <DD>Clear internal references to the writer and other variables. |
| |
| Subclasses can override this method for an alternate closing |
| behavior. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="writeFooter()"><!-- --></A><H3> |
| writeFooter</H3> |
| <PRE> |
| protected void <B>writeFooter</B>()</PRE> |
| <DL> |
| <DD>Write a footer as produced by the embedded layout's <A HREF="../../../org/apache/log4j/Layout.html#getFooter()"><CODE>Layout.getFooter()</CODE></A> method. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="writeHeader()"><!-- --></A><H3> |
| writeHeader</H3> |
| <PRE> |
| protected void <B>writeHeader</B>()</PRE> |
| <DL> |
| <DD>Write a header as produced by the embedded layout's <A HREF="../../../org/apache/log4j/Layout.html#getHeader()"><CODE>Layout.getHeader()</CODE></A> method. |
| <P> |
| <DD><DL> |
| </DL> |
| </DD> |
| </DL> |
| <HR> |
| |
| <A NAME="shouldFlush(org.apache.log4j.spi.LoggingEvent)"><!-- --></A><H3> |
| shouldFlush</H3> |
| <PRE> |
| protected boolean <B>shouldFlush</B>(<A HREF="../../../org/apache/log4j/spi/LoggingEvent.html" title="class in org.apache.log4j.spi">LoggingEvent</A> event)</PRE> |
| <DL> |
| <DD>Determines whether the writer should be flushed after |
| this event is written. |
| <P> |
| <DD><DL> |
| <DT><B>Since:</B></DT> |
| <DD>1.2.16</DD> |
| </DL> |
| </DD> |
| </DL> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <HR> |
| |
| |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <A NAME="navbar_bottom"><!-- --></A> |
| <A HREF="#skip-navbar_bottom" title="Skip navigation links"></A> |
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