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: Class LogWriter
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org.apache.java.io</FONT>
<BR>
Class LogWriter</H2>
<PRE>
java.lang.Object
|
+--<B>org.apache.java.io.LogWriter</B>
</PRE>
<HR>
<DL>
<DT>public class <B>LogWriter</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../org/apache/java/io/Logger.html">Logger</A></DL>
<P>
A <code>LogWriter</code> allows an application to incapsulate an output
stream and dumps its logs on it.
<p>
To control the different kinds of log messages they are separated into
<i>channels</i> that can be activated setting to <i>true</i> the right
property.
<p>
The configurations that control this writer are:
<ul>
<li>"identifier" a boolean value that enables the whole logging
<li>"identifier".dateFormat the date format used to time stamp
<li>"identifier".timestamp a boolean value that enables time stamping
<li>"identifier".channel."channelName" a boolean value that enables
the specified channel
<P>
<DL>
<DT><B>Version: </B><DD>$Revision: 1.27 $ $Date: 1999/11/09 21:57:40 $</DD>
</DL>
<HR>
<P>
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<CODE>protected class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.Agent.html">LogWriter.Agent</A></B></CODE>
<BR>
Class implementing the background logging.</TD>
</TR>
</TABLE>
<!-- =========== FIELD SUMMARY =========== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#active">active</A></B></CODE>
<BR>
Tells if this log is active</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#CH_EXCEPTION_TRACING">CH_EXCEPTION_TRACING</A></B></CODE>
<BR>
String identifier for the exception tracing channel.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#CH_QUEUE_STATUS">CH_QUEUE_STATUS</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#configurations">configurations</A></B></CODE>
<BR>
Configuration parameters.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#DEFAULT_DATEFORMAT">DEFAULT_DATEFORMAT</A></B></CODE>
<BR>
This string control the standard date format used
used for log timestamping.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#DEFAULT_IDENTIFIER">DEFAULT_IDENTIFIER</A></B></CODE>
<BR>
This string identifies this log writer and its used to
differentiate between configurations.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private java.text.SimpleDateFormat</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#formatter">formatter</A></B></CODE>
<BR>
The timestamp formatter.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#identifier">identifier</A></B></CODE>
<BR>
This string identifies this log writer and its used to
discriminate between configuration parameters.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#KEYWORD_CHANNEL">KEYWORD_CHANNEL</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#KEYWORD_DATEFORMAT">KEYWORD_DATEFORMAT</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#KEYWORD_FILE">KEYWORD_FILE</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#KEYWORD_QUEUE_MAXAGE">KEYWORD_QUEUE_MAXAGE</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#KEYWORD_QUEUE_MAXSIZE">KEYWORD_QUEUE_MAXSIZE</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#KEYWORD_TIMESTAMP">KEYWORD_TIMESTAMP</A></B></CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#logChannel">logChannel</A></B></CODE>
<BR>
Tells if the log message should contain a channel.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private <A HREF="../../../../org/apache/java/io/LogWriter.Agent.html">LogWriter.Agent</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#logDaemon">logDaemon</A></B></CODE>
<BR>
Background logger thread.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected <A HREF="../../../../org/apache/java/util/SimpleQueue.html">SimpleQueue</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#logQueue">logQueue</A></B></CODE>
<BR>
Log message queue.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#queue_maxage">queue_maxage</A></B></CODE>
<BR>
Maximum age of a queued log record, in milliseconds.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private long</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#queue_maxsize">queue_maxsize</A></B></CODE>
<BR>
Maximum size of a log queue.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#timestamp">timestamp</A></B></CODE>
<BR>
Tells if the log message should be started by a time stamp.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private java.io.PrintWriter</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#writer">writer</A></B></CODE>
<BR>
The writer encapsulated.</TD>
</TR>
</TABLE>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<B>Constructor Summary</B></FONT></TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#LogWriter(org.apache.java.util.Configurations)">LogWriter</A></B>(<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)</CODE>
<BR>
Constructs this class and gets output file from configurations.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#LogWriter(java.io.OutputStream, org.apache.java.util.Configurations)">LogWriter</A></B>(java.io.OutputStream output,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)</CODE>
<BR>
Constructs this class with the output stream to encapsulate using
default identifier.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#LogWriter(java.io.OutputStream, java.lang.String, org.apache.java.util.Configurations)">LogWriter</A></B>(java.io.OutputStream output,
java.lang.String identifier,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)</CODE>
<BR>
Constructs this class with the output stream to encapsulate.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#LogWriter(java.lang.String, org.apache.java.util.Configurations)">LogWriter</A></B>(java.lang.String identifier,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)</CODE>
<BR>
Constructs this class using identifier to discriminate between
configuration parameters and gets output file from configurations.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#LogWriter(java.io.Writer, org.apache.java.util.Configurations)">LogWriter</A></B>(java.io.Writer output,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)</CODE>
<BR>
Constructs this class with the output writer to encapsulate using
default identifier.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#LogWriter(java.io.Writer, java.lang.String, org.apache.java.util.Configurations)">LogWriter</A></B>(java.io.Writer output,
java.lang.String identifier,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)</CODE>
<BR>
Constructs this class with the output writer to encapsulate.</TD>
</TR>
</TABLE>
<!-- ========== METHOD SUMMARY =========== -->
<A NAME="method_summary"><!-- --></A>
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<B>Method Summary</B></FONT></TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#flush()">flush</A></B>()</CODE>
<BR>
Flush the log.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#isActive()">isActive</A></B>()</CODE>
<BR>
Tells if it is active.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#isActive(java.lang.String)">isActive</A></B>(java.lang.String channel)</CODE>
<BR>
Tells if the given channel is active.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#log(java.lang.String, java.lang.String)">log</A></B>(java.lang.String channel,
java.lang.String message)</CODE>
<BR>
Prints the log message on the right channel.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#log(java.lang.String, java.lang.Throwable)">log</A></B>(java.lang.String channel,
java.lang.Throwable t)</CODE>
<BR>
Prints the error message and stack trace if channel enabled.</TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/java/io/LogWriter.html#log(java.lang.Throwable)">log</A></B>(java.lang.Throwable t)</CODE>
<BR>
<B>Deprecated.</B> <I></I> </TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" ID="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" ID="TableRowColor">
<TD><CODE><clinit>,
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
registerNatives,
toString,
wait,
wait,
wait</CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<A NAME="field_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" ID="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Field Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="DEFAULT_IDENTIFIER"><!-- --></A><H3>
DEFAULT_IDENTIFIER</H3>
<PRE>
public static final java.lang.String <B>DEFAULT_IDENTIFIER</B></PRE>
<DL>
<DD>This string identifies this log writer and its used to
differentiate between configurations.</DL>
<HR>
<A NAME="DEFAULT_DATEFORMAT"><!-- --></A><H3>
DEFAULT_DATEFORMAT</H3>
<PRE>
public static final java.lang.String <B>DEFAULT_DATEFORMAT</B></PRE>
<DL>
<DD>This string control the standard date format used
used for log timestamping.</DL>
<HR>
<A NAME="KEYWORD_DATEFORMAT"><!-- --></A><H3>
KEYWORD_DATEFORMAT</H3>
<PRE>
public static final java.lang.String <B>KEYWORD_DATEFORMAT</B></PRE>
<DL>
</DL>
<HR>
<A NAME="KEYWORD_TIMESTAMP"><!-- --></A><H3>
KEYWORD_TIMESTAMP</H3>
<PRE>
public static final java.lang.String <B>KEYWORD_TIMESTAMP</B></PRE>
<DL>
</DL>
<HR>
<A NAME="KEYWORD_CHANNEL"><!-- --></A><H3>
KEYWORD_CHANNEL</H3>
<PRE>
public static final java.lang.String <B>KEYWORD_CHANNEL</B></PRE>
<DL>
</DL>
<HR>
<A NAME="KEYWORD_FILE"><!-- --></A><H3>
KEYWORD_FILE</H3>
<PRE>
public static final java.lang.String <B>KEYWORD_FILE</B></PRE>
<DL>
</DL>
<HR>
<A NAME="KEYWORD_QUEUE_MAXAGE"><!-- --></A><H3>
KEYWORD_QUEUE_MAXAGE</H3>
<PRE>
public static final java.lang.String <B>KEYWORD_QUEUE_MAXAGE</B></PRE>
<DL>
</DL>
<HR>
<A NAME="KEYWORD_QUEUE_MAXSIZE"><!-- --></A><H3>
KEYWORD_QUEUE_MAXSIZE</H3>
<PRE>
public static final java.lang.String <B>KEYWORD_QUEUE_MAXSIZE</B></PRE>
<DL>
</DL>
<HR>
<A NAME="CH_QUEUE_STATUS"><!-- --></A><H3>
CH_QUEUE_STATUS</H3>
<PRE>
public static final java.lang.String <B>CH_QUEUE_STATUS</B></PRE>
<DL>
</DL>
<HR>
<A NAME="CH_EXCEPTION_TRACING"><!-- --></A><H3>
CH_EXCEPTION_TRACING</H3>
<PRE>
public static final java.lang.String <B>CH_EXCEPTION_TRACING</B></PRE>
<DL>
<DD>String identifier for the exception tracing channel.</DL>
<HR>
<A NAME="configurations"><!-- --></A><H3>
configurations</H3>
<PRE>
public <A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> <B>configurations</B></PRE>
<DL>
<DD>Configuration parameters.</DL>
<HR>
<A NAME="active"><!-- --></A><H3>
active</H3>
<PRE>
public boolean <B>active</B></PRE>
<DL>
<DD>Tells if this log is active</DL>
<HR>
<A NAME="queue_maxage"><!-- --></A><H3>
queue_maxage</H3>
<PRE>
private long <B>queue_maxage</B></PRE>
<DL>
<DD>Maximum age of a queued log record, in milliseconds.
<p>
When the <A HREF="../../../../org/apache/java/io/LogWriter.html#logDaemon">log daemon</A> detects the record older than
this, it flushes the queue, just to make the observer happy, even if
that is a single message in the queue.
<p>
Default is hardcoded to 5000 ms.</DL>
<HR>
<A NAME="queue_maxsize"><!-- --></A><H3>
queue_maxsize</H3>
<PRE>
private long <B>queue_maxsize</B></PRE>
<DL>
<DD>Maximum size of a log queue.
<p>
When one of the <code>log(...)</code> messages detects that the log
queue size is more than this variable permits, it flushes the queue,
to keep the memory clean.
<p>
Default is 1000.</DL>
<HR>
<A NAME="identifier"><!-- --></A><H3>
identifier</H3>
<PRE>
private java.lang.String <B>identifier</B></PRE>
<DL>
<DD>This string identifies this log writer and its used to
discriminate between configuration parameters.</DL>
<HR>
<A NAME="timestamp"><!-- --></A><H3>
timestamp</H3>
<PRE>
private boolean <B>timestamp</B></PRE>
<DL>
<DD>Tells if the log message should be started by a time stamp.
Default is false.</DL>
<HR>
<A NAME="formatter"><!-- --></A><H3>
formatter</H3>
<PRE>
private java.text.SimpleDateFormat <B>formatter</B></PRE>
<DL>
<DD>The timestamp formatter.</DL>
<HR>
<A NAME="writer"><!-- --></A><H3>
writer</H3>
<PRE>
private java.io.PrintWriter <B>writer</B></PRE>
<DL>
<DD>The writer encapsulated.</DL>
<HR>
<A NAME="logDaemon"><!-- --></A><H3>
logDaemon</H3>
<PRE>
private <A HREF="../../../../org/apache/java/io/LogWriter.Agent.html">LogWriter.Agent</A> <B>logDaemon</B></PRE>
<DL>
<DD>Background logger thread.</DL>
<HR>
<A NAME="logChannel"><!-- --></A><H3>
logChannel</H3>
<PRE>
private boolean <B>logChannel</B></PRE>
<DL>
<DD>Tells if the log message should contain a channel.
Default is false.</DL>
<HR>
<A NAME="logQueue"><!-- --></A><H3>
logQueue</H3>
<PRE>
protected <A HREF="../../../../org/apache/java/util/SimpleQueue.html">SimpleQueue</A> <B>logQueue</B></PRE>
<DL>
<DD>Log message queue.
Supposed to keep the messages until they get processed by the
background logger thread.</DL>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" ID="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="LogWriter(org.apache.java.util.Configurations)"><!-- --></A><H3>
LogWriter</H3>
<PRE>
public <B>LogWriter</B>(<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)
throws java.io.IOException</PRE>
<DL>
<DD>Constructs this class and gets output file from configurations.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>configurations</CODE> - the configurations needed at initialization.</DL>
</DD>
</DL>
<HR>
<A NAME="LogWriter(java.lang.String, org.apache.java.util.Configurations)"><!-- --></A><H3>
LogWriter</H3>
<PRE>
public <B>LogWriter</B>(java.lang.String identifier,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)
throws java.io.IOException</PRE>
<DL>
<DD>Constructs this class using identifier to discriminate between
configuration parameters and gets output file from configurations.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>identifier</CODE> - the identifier for this log writer.<DD><CODE>configurations</CODE> - the configurations needed at initialization.</DL>
</DD>
</DL>
<HR>
<A NAME="LogWriter(java.io.Writer, org.apache.java.util.Configurations)"><!-- --></A><H3>
LogWriter</H3>
<PRE>
public <B>LogWriter</B>(java.io.Writer output,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)
throws java.io.IOException</PRE>
<DL>
<DD>Constructs this class with the output writer to encapsulate using
default identifier.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>output</CODE> - the output writer to encapsulate.<DD><CODE>configurations</CODE> - the configurations needed at initialization.</DL>
</DD>
</DL>
<HR>
<A NAME="LogWriter(java.io.OutputStream, org.apache.java.util.Configurations)"><!-- --></A><H3>
LogWriter</H3>
<PRE>
public <B>LogWriter</B>(java.io.OutputStream output,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)
throws java.io.IOException</PRE>
<DL>
<DD>Constructs this class with the output stream to encapsulate using
default identifier.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>output</CODE> - the output stream to encapsulate.<DD><CODE>configurations</CODE> - the configurations needed at initialization.</DL>
</DD>
</DL>
<HR>
<A NAME="LogWriter(java.io.OutputStream, java.lang.String, org.apache.java.util.Configurations)"><!-- --></A><H3>
LogWriter</H3>
<PRE>
public <B>LogWriter</B>(java.io.OutputStream output,
java.lang.String identifier,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)
throws java.io.IOException</PRE>
<DL>
<DD>Constructs this class with the output stream to encapsulate.
The log identifier is used to discriminate between configuration
parameters.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>output</CODE> - the output stream to encapsulate.<DD><CODE>identifier</CODE> - the identifier for this log writer.<DD><CODE>configurations</CODE> - the configurations needed at initialization.</DL>
</DD>
</DL>
<HR>
<A NAME="LogWriter(java.io.Writer, java.lang.String, org.apache.java.util.Configurations)"><!-- --></A><H3>
LogWriter</H3>
<PRE>
public <B>LogWriter</B>(java.io.Writer output,
java.lang.String identifier,
<A HREF="../../../../org/apache/java/util/Configurations.html">Configurations</A> configurations)
throws java.io.IOException</PRE>
<DL>
<DD>Constructs this class with the output writer to encapsulate.
The log identifier is used to discriminate between configuration
parameters.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>output</CODE> - the output writer to encapsulate.<DD><CODE>identifier</CODE> - the identifier for this log writer.<DD><CODE>configurations</CODE> - the configurations needed at initialization.</DL>
</DD>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" ID="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="isActive()"><!-- --></A><H3>
isActive</H3>
<PRE>
public boolean <B>isActive</B>()</PRE>
<DL>
<DD>Tells if it is active.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../../../org/apache/java/io/Logger.html#isActive()">isActive</A> in interface <A HREF="../../../../org/apache/java/io/Logger.html">Logger</A></DL>
</DD>
</DL>
<HR>
<A NAME="isActive(java.lang.String)"><!-- --></A><H3>
isActive</H3>
<PRE>
public boolean <B>isActive</B>(java.lang.String channel)</PRE>
<DL>
<DD>Tells if the given channel is active.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../../../org/apache/java/io/Logger.html#isActive(java.lang.String)">isActive</A> in interface <A HREF="../../../../org/apache/java/io/Logger.html">Logger</A><DT><B>Parameters:</B><DD><CODE>channel</CODE> - the channel to test.</DL>
</DD>
</DL>
<HR>
<A NAME="log(java.lang.String, java.lang.String)"><!-- --></A><H3>
log</H3>
<PRE>
public void <B>log</B>(java.lang.String channel,
java.lang.String message)</PRE>
<DL>
<DD>Prints the log message on the right channel.
<p>
A "channel" is a virtual log that may be enabled or disabled by
setting the property "identifier".channel.???=true where ??? is the
channel identifier that must be passed with the message.
If a channel is not recognized or its property is set to false
the message is not written.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../../../org/apache/java/io/Logger.html#log(java.lang.String, java.lang.String)">log</A> in interface <A HREF="../../../../org/apache/java/io/Logger.html">Logger</A><DT><B>Parameters:</B><DD><CODE>channel</CODE> - the channel to put the message on.<DD><CODE>name</CODE> - the message to log.</DL>
</DD>
</DL>
<HR>
<A NAME="log(java.lang.String, java.lang.Throwable)"><!-- --></A><H3>
log</H3>
<PRE>
public void <B>log</B>(java.lang.String channel,
java.lang.Throwable t)</PRE>
<DL>
<DD>Prints the error message and stack trace if channel enabled.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../../../org/apache/java/io/Logger.html#log(java.lang.String, java.lang.Throwable)">log</A> in interface <A HREF="../../../../org/apache/java/io/Logger.html">Logger</A><DT><B>Parameters:</B><DD><CODE>t</CODE> - the error thrown.</DL>
</DD>
</DL>
<HR>
<A NAME="log(java.lang.Throwable)"><!-- --></A><H3>
log</H3>
<PRE>
public void <B>log</B>(java.lang.Throwable t)</PRE>
<DL>
<DD><B>Deprecated.</B> <I></I> <DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="flush()"><!-- --></A><H3>
flush</H3>
<PRE>
public void <B>flush</B>()</PRE>
<DL>
<DD>Flush the log.
Write any pending messages into the log media.<DD><DL>
<DT><B>Specified by: </B><DD><A HREF="../../../../org/apache/java/io/Logger.html#flush()">flush</A> in interface <A HREF="../../../../org/apache/java/io/Logger.html">Logger</A></DL>
</DD>
</DL>
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