com.saxonica.stream.watch

Class TypedValueWatch

java.lang.Object

com.saxonica.validate.AbstractWatch

com.saxonica.stream.watch.ComposingWatch

com.saxonica.stream.watch.TypedValueWatch

All Implemented Interfaces:

Watch

public class TypedValueWatch
extends ComposingWatch

This class is used when a streamed template requests evaluation of the typed value of the nodes selected by a path expression.

Constructor Summary

Constructors

Constructor and Description
TypedValueWatch(Feed result, Stack<XPathContext> contextStack)

Method Summary

Methods

Modifier and Type	Method and Description
void	endSelectedParentNode(int locationId) Signal that the endElement event has occurred for the element whose startElement event caused the Watch to be activated.
void	notifySelectedLeafNode(FleetingNode node, int locationId) Signal that a node (other than an element) that matches the selection has been found.
Receiver	startSelectedParentNode(FleetingNode node, int locationId) Signal that an element has been found that matches the selection that this Watch is looking for.

Methods inherited from class com.saxonica.stream.watch.ComposingWatch

close, getContext, getContextStack, getResult, open

Methods inherited from class com.saxonica.validate.AbstractWatch

getAnchorNode, getNamespaceResolver, getPipelineConfiguration, getSelection, setAnchorNode, setNamespaceResolver, setPipelineConfiguration, setSelection

Methods inherited from class java.lang.Object

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

Constructor Detail

TypedValueWatch

public TypedValueWatch(Feed result,
               Stack<XPathContext> contextStack)

Method Detail

startSelectedParentNode

public Receiver startSelectedParentNode(FleetingNode node,
                               int locationId)
                                 throws XPathException

Signal that an element has been found that matches the selection that this Watch is looking for. This method is called by the ConstraintChecker while processing the startElement event that matches the selection. For this purpose, any attributes selected by the last step in the selection are ignored

Parameters:

node -

locationId - @throws net.sf.saxon.type.ValidationException May be raised if the constraint implemented by this Watch is violated

Returns:

a Receiver to be notified of all events starting with the startElement/startDocument event for the matched element, and ending with the endElement event for that element; or null if this feature is not required.

Throws:

XPathException - May be raised if a dynamic error occurs

endSelectedParentNode

public void endSelectedParentNode(int locationId)
                           throws XPathException

Signal that the endElement event has occurred for the element whose startElement event caused the Watch to be activated.

Parameters:

locationId - the location of the element

Throws:

ValidationException - May be raised if the constraint implemented by this Watch is violated @param locationId

XPathException - May be raised if a constraint implemented by this Watch is violated

notifySelectedLeafNode

public void notifySelectedLeafNode(FleetingNode node,
                          int locationId)
                            throws XPathException

Signal that a node (other than an element) that matches the selection has been found.

Specified by:

notifySelectedLeafNode in interface Watch

Overrides:

notifySelectedLeafNode in class AbstractWatch

Parameters:

node - the node that was matched.

locationId -

Throws:

XPathException