org.apache.xalan.trace

## Class TraceManager

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

-     public class TraceManager
      extends java.lang.Object

  This class manages trace listeners, and acts as an interface for the tracing functionality in Xalan.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `TraceManager(TransformerImpl transformer)` Constructor for the trace manager.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addTraceListener(TraceListener tl)` Add a trace listener for the purposes of debugging and diagnosis.
    `void` | `fireExtensionEndEvent(ExtensionEvent ee)` Fire an end extension event.
    `void` | `fireExtensionEndEvent(java.lang.reflect.Method method, java.lang.Object instance, java.lang.Object[] arguments)` Fire an end extension event.
    `void` | `fireExtensionEvent(ExtensionEvent ee)` Fire an end extension event.
    `void` | `fireExtensionEvent(java.lang.reflect.Method method, java.lang.Object instance, java.lang.Object[] arguments)` Fire an end extension event.
    `void` | `fireGenerateEvent(GenerateEvent te)` Fire a generate event.
    `void` | `fireSelectedEndEvent(EndSelectionEvent se)` Fire a selection event.
    `void` | `fireSelectedEndEvent(int sourceNode, ElemTemplateElement styleNode, java.lang.String attributeName, XPath xpath, XObject selection)` Fire a selection event.
    `void` | `fireSelectedEvent(int sourceNode, ElemTemplateElement styleNode, java.lang.String attributeName, XPath xpath, XObject selection)` Fire a selection event.
    `void` | `fireSelectedEvent(SelectionEvent se)` Fire a selection event.
    `void` | `fireTraceEndEvent(ElemTemplateElement styleNode)` Fire a end trace event, after all children of an element have been executed.
    `void` | `fireTraceEndEvent(TracerEvent te)` Fire a trace event.
    `void` | `fireTraceEvent(ElemTemplateElement styleNode)` Fire a trace event.
    `void` | `fireTraceEvent(TracerEvent te)` Fire a trace event.
    `boolean` | `hasTraceListeners()` Tell if trace listeners are present.
    `void` | `removeTraceListener(TraceListener tl)` Remove a trace listener.

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### TraceManager

          public TraceManager(TransformerImpl transformer)

      Constructor for the trace manager.
      Parameters:
        `transformer` - a non-null instance of a transformer

  - ### Method Detail

    - #### addTraceListener

          public void addTraceListener(TraceListener tl)
                                throws java.util.TooManyListenersException

      Add a trace listener for the purposes of debugging and diagnosis.
      Parameters:
        `tl` - Trace listener to be added.
      Throws:
        `java.util.TooManyListenersException`

    - #### removeTraceListener

          public void removeTraceListener(TraceListener tl)

      Remove a trace listener.
      Parameters:
        `tl` - Trace listener to be removed.

    - #### fireGenerateEvent

          public void fireGenerateEvent(GenerateEvent te)

      Fire a generate event.
      Parameters:
        `te` - Generate Event to fire

    - #### hasTraceListeners

          public boolean hasTraceListeners()

      Tell if trace listeners are present.
      Returns:
        True if there are trace listeners

    - #### fireTraceEvent

          public void fireTraceEvent(ElemTemplateElement styleNode)

      Fire a trace event.
      Parameters:
        `styleNode` - Stylesheet template node

    - #### fireTraceEndEvent

          public void fireTraceEndEvent(ElemTemplateElement styleNode)

      Fire a end trace event, after all children of an element have been executed.
      Parameters:
        `styleNode` - Stylesheet template node

    - #### fireTraceEndEvent

          public void fireTraceEndEvent(TracerEvent te)

      Fire a trace event.
      Parameters:
        `te` - Trace event to fire

    - #### fireTraceEvent

          public void fireTraceEvent(TracerEvent te)

      Fire a trace event.
      Parameters:
        `te` - Trace event to fire

    - #### fireSelectedEvent

          public void fireSelectedEvent(int sourceNode,
                               ElemTemplateElement styleNode,
                               java.lang.String attributeName,
                               XPath xpath,
                               XObject selection)
                                 throws TransformerException

      Fire a selection event.
      Parameters:
        `sourceNode` - Current source node
        `styleNode` - node in the style tree reference for the event.
        `attributeName` - The attribute name from which the selection is made.
        `xpath` - The XPath that executed the selection.
        `selection` - The result of the selection.
      Throws:
        `TransformerException`

    - #### fireSelectedEndEvent

          public void fireSelectedEndEvent(int sourceNode,
                                  ElemTemplateElement styleNode,
                                  java.lang.String attributeName,
                                  XPath xpath,
                                  XObject selection)
                                    throws TransformerException

      Fire a selection event.
      Parameters:
        `sourceNode` - Current source node
        `styleNode` - node in the style tree reference for the event.
        `attributeName` - The attribute name from which the selection is made.
        `xpath` - The XPath that executed the selection.
        `selection` - The result of the selection.
      Throws:
        `TransformerException`

    - #### fireSelectedEndEvent

          public void fireSelectedEndEvent(EndSelectionEvent se)
                                    throws TransformerException

      Fire a selection event.
      Parameters:
        `se` - Selection event to fire
      Throws:
        `TransformerException`

    - #### fireSelectedEvent

          public void fireSelectedEvent(SelectionEvent se)
                                 throws TransformerException

      Fire a selection event.
      Parameters:
        `se` - Selection event to fire
      Throws:
        `TransformerException`

    - #### fireExtensionEndEvent

          public void fireExtensionEndEvent(java.lang.reflect.Method method,
                                   java.lang.Object instance,
                                   java.lang.Object[] arguments)

      Fire an end extension event.
      Parameters:
        `method` - The java method about to be executed
        `instance` - The instance the method will be executed on
        `arguments` - Parameters passed to the method.
      See Also:
        `Method.invoke(java.lang.Object, java.lang.Object...)`

    - #### fireExtensionEvent

          public void fireExtensionEvent(java.lang.reflect.Method method,
                                java.lang.Object instance,
                                java.lang.Object[] arguments)

      Fire an end extension event.
      Parameters:
        `method` - The java method about to be executed
        `instance` - The instance the method will be executed on
        `arguments` - Parameters passed to the method.
      See Also:
        `Method.invoke(java.lang.Object, java.lang.Object...)`

    - #### fireExtensionEndEvent

          public void fireExtensionEndEvent(ExtensionEvent ee)

      Fire an end extension event.
      Parameters:
        `ee` - the ExtensionEvent to fire
      See Also:
        `Method.invoke(java.lang.Object, java.lang.Object...)`

    - #### fireExtensionEvent

          public void fireExtensionEvent(ExtensionEvent ee)

      Fire an end extension event.
      Parameters:
        `ee` - the ExtensionEvent to fire
      See Also:
        `Method.invoke(java.lang.Object, java.lang.Object...)`

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