com.saxonica.validate
Class RefSelectorWatch

java.lang.Object
  com.saxonica.validate.SelectorWatch
      com.saxonica.validate.RefSelectorWatch

All Implemented Interfaces:

Watch

public class RefSelectorWatch
extends SelectorWatch

This class watches the selector for a keyref constraint

Constructor Summary

RefSelectorWatch(ConstraintChecker checker, KeyRef constraint)
Create a watch for values that might satisfy a keyref constraint

Method Summary

void	close() The close() method is called immediately before the Watch is destroyed, that is, when the element whose declaration scopes the constraint implemented by this Watch goes out of scope.
void	notifyActualKey(Value[] keyValue, int locationId) Notify a value selected by this KeyRef

Methods inherited from class com.saxonica.validate.SelectorWatch

activate, addFieldValue, checkRow, deactivate, displayRow, getIdentityConstraint, getOriginDepth, getSelection, reportValidationError, reportValidationError, setNamespaceResolver, setOriginDepth, setPipelineConfiguration

Methods inherited from class java.lang.Object

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

Constructor Detail

RefSelectorWatch

public RefSelectorWatch(ConstraintChecker checker,
                        KeyRef constraint)

Create a watch for values that might satisfy a keyref constraint

Parameters:

checker - the ConstraintChecker that initiated this watch

constraint - the constraint being checked

Method Detail

notifyActualKey

public void notifyActualKey(Value[] keyValue,
                            int locationId)
                     throws ValidationException

Notify a value selected by this KeyRef

Parameters:

keyValue - an array holding the components (fields) making up the keyref value

locationId - the location of the node containing the keyref values

Throws:

ValidationException

close

public void close()
           throws ValidationException

The close() method is called immediately before the Watch is destroyed, that is, when the element whose declaration scopes the constraint implemented by this Watch goes out of scope. This implementation searches the list of all key values encountered looking (a) for key references that reference no corresponding key value (b) for key references that reference more than one corresponding key value (which can happen if the keyref and the key are defined at different levels of hierarchy.

Specified by:

close in interface Watch

Overrides:

close in class SelectorWatch

Throws:

ValidationException