org.cdlib.xtf.util
Class TraceWriter

Object
  Writer
      TraceWriter

All Implemented Interfaces:

Closeable, Flushable, Appendable

public class TraceWriter
extends Writer

This is a simple PrintStream derivative that sends its output to the XTF Trace class instead of stdout or stderr.

Field Summary

private StringBuffer	buf Buffer to build up each line, flushed at newline
private int	traceLevel What level to output messages at

Fields inherited from class Writer

lock

Constructor Summary

TraceWriter(int traceLevel)
Construct a TraceWriter, recording the Trace level that future messages written to the stream will be output at.

Method Summary

void	close() Close the stream
void	flush() Flush any remaining output in the buffer
private void	output(String str) Output a string at the configured debug level
void	write(char[] cbuf, int off, int len) Write a series of characters.

Methods inherited from class Writer

append, append, append, write, write, write, write

Methods inherited from class Object

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

Field Detail

traceLevel

private int traceLevel

What level to output messages at

buf

private StringBuffer buf

Buffer to build up each line, flushed at newline

Constructor Detail

TraceWriter

public TraceWriter(int traceLevel)

Construct a TraceWriter, recording the Trace level that future messages written to the stream will be output at.

Parameters:

traceLevel - Level to output future messages.

Method Detail

write

public void write(char[] cbuf,
                  int off,
                  int len)
           throws IOException

Write a series of characters. Each newline-separated line is written to the Trace stream at the configured debug level.

Specified by:

write in class Writer

Throws:

IOException

output

private void output(String str)

Output a string at the configured debug level

flush

public void flush()
           throws IOException

Flush any remaining output in the buffer

Specified by:

flush in interface Flushable

Specified by:

flush in class Writer

Throws:

IOException

close

public void close()
           throws IOException

Close the stream

Specified by:

close in interface Closeable

Specified by:

close in class Writer

Throws:

IOException