net.sf.saxon.trace

Class AbstractTraceListener

public abstract class AbstractTraceListener extends Object implements TraceListener

This is the standard trace listener used when the -T option is specified on the command line. There are two variants, represented by subclasses: one for XSLT, and one for XQuery. The two variants differ in that they present the trace output in terms of constructs used in the relevant host language.

Method Summary
void	close() Called at end
void	endCurrentItem(Item item) Called after a node of the source tree got processed
void	enter(InstructionInfo info, XPathContext context) Called when an instruction in the stylesheet gets processed
String	escape(String in) Escape a string for XML output (in an attribute delimited by double quotes).
protected abstract String	getOpeningAttributes()
PrintStream	getOutputDestination() Get the output destination
void	leave(InstructionInfo info) Called after an instruction of the stylesheet got processed
void	open() Called at start
void	setOutputDestination(PrintStream stream) Set the output destination (default is System.err)
void	startCurrentItem(Item item) Called when an item becomes the context item
protected abstract String	tag(int construct)

Method Detail

close

public void close()

Called at end

endCurrentItem

public void endCurrentItem(Item item)

Called after a node of the source tree got processed

enter

public void enter(InstructionInfo info, XPathContext context)

Called when an instruction in the stylesheet gets processed

escape

public String escape(String in)

Escape a string for XML output (in an attribute delimited by double quotes). This method also collapses whitespace (since the value may be an XPath expression that was originally written over several lines).