# Package org.apache.xalan.trace

Implementation of Xalan Trace events, for use by a debugger.

See: Description

Interface Summary
Interface | Description
--- | ---
TraceListener | Interface the XSL processor calls when it matches a source node, selects a set of source nodes, or generates a result node.
TraceListenerEx | Extends TraceListener but adds a SelectEnd event.
TraceListenerEx2 | Extends TraceListenerEx but adds a EndTrace event.
TraceListenerEx3 | Extends TraceListenerEx2 but adds extensions trace events.

Class Summary
Class | Description
--- | ---
EndSelectionEvent | Event triggered by completion of a xsl:for-each selection or a xsl:apply-templates selection.
ExtensionEvent | An event representing an extension call.
GenerateEvent | Event generated by the XSL processor after it generates a new node in the result tree.
PrintTraceListener | Implementation of the TraceListener interface that prints each event to standard out as it occurs.
SelectionEvent | Event triggered by selection of a node in the style stree.
TraceManager | This class manages trace listeners, and acts as an interface for the tracing functionality in Xalan.
TracerEvent | Parent class of events generated for tracing the progress of the XSL processor.

## Package org.apache.xalan.trace Description

Implementation of Xalan Trace events, for use by a debugger.