com.saxonica.stream.watch
Class EventPushingWatch
java.lang.Object
com.saxonica.validate.AbstractWatch
com.saxonica.stream.watch.EventPushingWatch
- All Implemented Interfaces:
- Watch
- Direct Known Subclasses:
- ApplyTemplatesWatch, ForEachWatch, IterateWatch
public abstract class EventPushingWatch
- extends AbstractWatch
A EvaluatingWatch is a Watch that evaluates an expression based on the nodes encountered
in a streamed input document, appending the value of that expression to the Watch for the
next expression in the streaming route.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
EventPushingWatch
public EventPushingWatch(Expression expression,
SequenceReceiver result,
Stack<XPathContext> contextStack)
setResult
public void setResult(SequenceReceiver result)
getResult
public SequenceReceiver getResult()
getExpression
public Expression getExpression()
getContext
public XPathContext getContext()
getContextStack
public Stack<XPathContext> getContextStack()
setParentExpressionFeed
public void setParentExpressionFeed(Feed feed)
- Set a feed to be notified when this watch is opened and closed. Typically this feed is
a ComplexNodeEventFeed, which is responsible for outputting events representing the start and end
of constructed elements produced by a parent expression.
- Parameters:
feed
- the feed to be notified when this Watch is opened or closed.
open
public void open()
throws XPathException
- Description copied from class:
AbstractWatch
- Open the watch. This is done at the point where it first starts watching for nodes
that match the selection.
- Specified by:
open
in interface Watch
- Overrides:
open
in class AbstractWatch
- Throws:
XPathException
close
public void close()
throws XPathException
- Description copied from class:
AbstractWatch
- 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. The default implementation does nothing.
- Specified by:
close
in interface Watch
- Overrides:
close
in class AbstractWatch
- Throws:
XPathException
Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.