PrintTraceListener (Xalan-Java 2.7.2)

java.lang.Object
- org.apache.xalan.trace.PrintTraceListener

All Implemented Interfaces:

java.util.EventListener, TraceListener, TraceListenerEx, TraceListenerEx2, TraceListenerEx3
```
public class PrintTraceListener
extends java.lang.Object
implements TraceListenerEx3
```
Implementation of the TraceListener interface that prints each event to standard out as it occurs.

See Also:

TracerEvent

Field Summary

Fields
Modifier and Type	Field	Description
`boolean`	`m_traceElements`	Set to true if the listener is to print events that occur as each node is 'executed' in the stylesheet.
`boolean`	`m_traceExtension`	Set to true if the listener is to print information after each extension event.
`boolean`	`m_traceGeneration`	Set to true if the listener is to print information after each result-tree generation event.
`boolean`	`m_traceSelection`	Set to true if the listener is to print information after each selection event.
`boolean`	`m_traceTemplates`	This needs to be set to true if the listener is to print an event whenever a template is invoked.

Constructor Summary

Constructors
Constructor Description

PrintTraceListener(java.io.PrintWriter pw)
Construct a trace listener.

Constructors
Constructor	Description
`PrintTraceListener(java.io.PrintWriter pw)`	Construct a trace listener.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`_trace(TracerEvent ev)`	Print information about a TracerEvent.
`void`	`extension(ExtensionEvent ev)`	Print information about an extension event.
`void`	`extensionEnd(ExtensionEvent ev)`	Print information about an extension event.
`void`	`generated(GenerateEvent ev)`	Print information about a Generate event.
`void`	`selected(SelectionEvent ev)`	Method that is called just after a select attribute has been evaluated.
`void`	`selectEnd(EndSelectionEvent ev)`	Method that is called after an xsl:apply-templates or xsl:for-each selection occurs.
`void`	`trace(TracerEvent ev)`	Print information about a TracerEvent.
`void`	`traceEnd(TracerEvent ev)`	Method that is called when the end of a trace event occurs.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - m_traceTemplates
```
public boolean m_traceTemplates
```
    This needs to be set to true if the listener is to print an event whenever a template is invoked.
  - m_traceElements
```
public boolean m_traceElements
```
    Set to true if the listener is to print events that occur as each node is 'executed' in the stylesheet.
  - m_traceGeneration
```
public boolean m_traceGeneration
```
    Set to true if the listener is to print information after each result-tree generation event.
  - m_traceSelection
```
public boolean m_traceSelection
```
    Set to true if the listener is to print information after each selection event.
  - m_traceExtension
```
public boolean m_traceExtension
```
    Set to true if the listener is to print information after each extension event.
- Constructor Detail
  - PrintTraceListener
```
public PrintTraceListener(java.io.PrintWriter pw)
```
    Construct a trace listener.
    
    Parameters:
    
    pw - PrintWriter to use for tracing events
- Method Detail
  - _trace
```
public void _trace(TracerEvent ev)
```
    Print information about a TracerEvent.
    
    Parameters:
    
    ev - the trace event.
  - trace
```
public void trace(TracerEvent ev)
```
    Print information about a TracerEvent.
    
    Specified by:
    
    trace in interface TraceListener
    
    Parameters:
    
    ev - the trace event.
  - traceEnd
```
public void traceEnd(TracerEvent ev)
```
    Method that is called when the end of a trace event occurs. The method is blocking. It must return before processing continues.
    
    Specified by:
    
    traceEnd in interface TraceListenerEx2
    
    Parameters:
    
    ev - the trace event.
  - selected
```
public void selected(SelectionEvent ev)
              throws javax.xml.transform.TransformerException
```
    Method that is called just after a select attribute has been evaluated.
    
    Specified by:
    
    selected in interface TraceListener
    
    Parameters:
    
    ev - the generate event.
    
    Throws:
    
    javax.xml.transform.TransformerException
  - selectEnd
```
public void selectEnd(EndSelectionEvent ev)
               throws javax.xml.transform.TransformerException
```
    Method that is called after an xsl:apply-templates or xsl:for-each selection occurs.
    
    Specified by:
    
    selectEnd in interface TraceListenerEx
    
    Parameters:
    
    ev - the generate event.
    
    Throws:
    
    javax.xml.transform.TransformerException
  - generated
```
public void generated(GenerateEvent ev)
```
    Print information about a Generate event.
    
    Specified by:
    
    generated in interface TraceListener
    
    Parameters:
    
    ev - the trace event.
  - extension
```
public void extension(ExtensionEvent ev)
```
    Print information about an extension event.
    
    Specified by:
    
    extension in interface TraceListenerEx3
    
    Parameters:
    
    ev - the extension event to print information about
  - extensionEnd
```
public void extensionEnd(ExtensionEvent ev)
```
    Print information about an extension event.
    
    Specified by:
    
    extensionEnd in interface TraceListenerEx3
    
    Parameters:
    
    ev - the extension event to print information about

Class PrintTraceListener

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

m_traceTemplates

m_traceElements

m_traceGeneration

m_traceSelection

m_traceExtension

Constructor Detail

PrintTraceListener

Method Detail

_trace

trace

traceEnd

selected

selectEnd

generated

extension

extensionEnd