net.sf.saxon.trace
Class TimedTraceListener

java.lang.Object
  net.sf.saxon.trace.TimedTraceListener

All Implemented Interfaces:

EventListener, TraceListener

public class TimedTraceListener
extends Object
implements TraceListener

A Simple trace listener that writes messages to System.err or to another designated PrintStream

Constructor Summary

TimedTraceListener()

Method Summary

void	close() Called at end
void	endCurrentItem(Item item) Called after a node of the source tree got processed
void	enter(InstructionInfo instruction, XPathContext context) Called when an instruction in the stylesheet gets processed
void	leave(InstructionInfo instruction) Called after an instruction of the stylesheet got processed
void	open() Called at start
void	setOutputStream(PrintStream stream) Set the PrintStream to which the output will be written.
void	startCurrentItem(Item item) Called when an item becomes current

Methods inherited from class java.lang.Object

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

Constructor Detail

TimedTraceListener

public TimedTraceListener()

Method Detail

setOutputStream

public void setOutputStream(PrintStream stream)

Set the PrintStream to which the output will be written.

Parameters:

stream - the PrintStream to be used for output. By default, the output is written to System.err.

open

public void open()

Called at start

Specified by:

open in interface TraceListener

close

public void close()

Called at end

Specified by:

close in interface TraceListener

enter

public void enter(InstructionInfo instruction,
                  XPathContext context)

Called when an instruction in the stylesheet gets processed

Specified by:

enter in interface TraceListener

Parameters:

instruction - gives information about the instruction being executed, and about the context in which it is executed. This object is mutable, so if information from the InstructionInfo is to be retained, it must be copied.

leave

public void leave(InstructionInfo instruction)

Called after an instruction of the stylesheet got processed

Specified by:

leave in interface TraceListener

Parameters:

instruction - gives the same information that was supplied to the enter method, though it is not necessarily the same object. Note that the line number of the instruction is that of the start tag in the source stylesheet, not the line number of the end tag.

startCurrentItem

public void startCurrentItem(Item item)

Called when an item becomes current

Specified by:

startCurrentItem in interface TraceListener

Parameters:

item - the new current item. Item objects are not mutable; it is safe to retain a reference to the Item for later use.

endCurrentItem

public void endCurrentItem(Item item)

Called after a node of the source tree got processed

Specified by:

endCurrentItem in interface TraceListener

Parameters:

item - the item that was current, whose processing is now complete. This will represent the same underlying item as the corresponding startCurrentItem() call, though it will not necessarily be the same actual object.