com.saxonica.xqj.pull

Class PullTracer

java.lang.Object

net.sf.saxon.pull.PullFilter

com.saxonica.xqj.pull.PullTracer

All Implemented Interfaces:

PullProvider

public class PullTracer
extends PullFilter

PullTracer is a PullFilter that can be inserted into a pull pipeline for diagnostic purposes. It traces all the events as they are read, writing details to System.err

Nested Class Summary

Nested classes/interfaces inherited from interface net.sf.saxon.pull.PullProvider

PullProvider.Event

Field Summary

Fields inherited from class net.sf.saxon.pull.PullFilter

currentEvent

Constructor Summary

Constructors

Constructor and Description
PullTracer(PullProvider base) Create a PullTracer

Method Summary

Modifier and Type	Method and Description
PullProvider.Event	next() Get the next event.

Methods inherited from class net.sf.saxon.pull.PullFilter

close, current, getAtomicValue, getAttributes, getNamePool, getNamespaceDeclarations, getNodeName, getPipelineConfiguration, getSchemaType, getSourceLocator, getStringValue, getUnderlyingProvider, getUnparsedEntities, setPipelineConfiguration, skipToMatchingEnd

Methods inherited from class java.lang.Object

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

Constructor Detail

PullTracer

public PullTracer(PullProvider base)

Create a PullTracer

Parameters:

base - the PullProvider to which requests are to be passed

Method Detail

next

public PullProvider.Event next()
                        throws XPathException

Get the next event. This implementation gets the next event from the underlying PullProvider, copies it to the branch Receiver, and then returns the event to the caller.

Specified by:

next in interface PullProvider

Overrides:

next in class PullFilter

Returns:

an integer code indicating the type of event. The code PullProvider.Event.END_OF_INPUT is returned at the end of the sequence.

Throws:

XPathException - if a dynamic error occurs