com.saxonica.stream.watch
Class ExistsWatch

java.lang.Object
  com.saxonica.validate.AbstractWatch
      com.saxonica.stream.watch.ComposingWatch
          com.saxonica.stream.watch.CountWatch
              com.saxonica.stream.watch.ExistsWatch

All Implemented Interfaces:

Watch

public class ExistsWatch
extends CountWatch

Streaming watch supporting the exists() function

Field Summary

Fields inherited from class com.saxonica.stream.watch.CountWatch

count

Constructor Summary

ExistsWatch(Expression expression, Feed result, Stack<XPathContext> contextStack)

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.

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

endSelectedParentNode, notifySelectedLeafNode, startSelectedParentNode

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

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

ExistsWatch

public ExistsWatch(Expression expression,
                   Feed result,
                   Stack<XPathContext> contextStack)

Method Detail

close

public void close()
           throws XPathException

Description copied from class: CountWatch

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.

Specified by:

close in interface Watch

Overrides:

close in class CountWatch

Throws:

XPathException