com.saxonica.xqj.pull

Class ElementNameTracker

java.lang.Object

net.sf.saxon.pull.PullFilter

com.saxonica.xqj.pull.ElementNameTracker

All Implemented Interfaces:

PullProvider

public class ElementNameTracker
extends PullFilter

This is a filter that can be added to a pull pipeline to remember element names so that they are available immediately after the END_ELEMENT event is notified

Field Summary

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

currentEvent

Fields inherited from interface net.sf.saxon.pull.PullProvider

ATOMIC_VALUE, ATTRIBUTE, COMMENT, END_DOCUMENT, END_ELEMENT, END_OF_INPUT, NAMESPACE, PROCESSING_INSTRUCTION, START_DOCUMENT, START_ELEMENT, START_OF_INPUT, TEXT

Constructor Summary

Constructors

Constructor and Description
ElementNameTracker(PullProvider base)

Method Summary

Modifier and Type	Method and Description
NodeName	getNodeName() Get the node name identifying the name of the current node.
int	next() Get the next event.

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

close, current, getAtomicValue, getAttributes, getNamePool, getNamespaceDeclarations, 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

ElementNameTracker

public ElementNameTracker(PullProvider base)

Method Detail

next

public int next()
         throws XPathException

Get the next event.

Note that a subclass that overrides this method is responsible for ensuring that current() works properly. This can be achieved by setting the field currentEvent to the event returned by any call on next().

Specified by:

next in interface PullProvider

Overrides:

next in class PullFilter

Returns:

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

Throws:

XPathException - if a dynamic error occurs

getNodeName

public NodeName getNodeName()

Get the node name identifying the name of the current node. This method can be used after the PullProvider.START_ELEMENT, PullProvider.PROCESSING_INSTRUCTION, PullProvider.ATTRIBUTE, or PullProvider.NAMESPACE events. With some PullProvider implementations, including this one, it can also be used after PullProvider.END_ELEMENT: in fact, that is the main purpose of this class. If called at other times, the result is undefined and may result in an IllegalStateException. If called when the current node is an unnamed namespace node (a node representing the default namespace) the returned value is -1.

Specified by:

getNodeName in interface PullProvider

Overrides:

getNodeName in class PullFilter

Returns:

the node name. This can be used to obtain the prefix, local name, and namespace URI from the name pool.