com.saxonica.stream.feed
Class ComplexNodeEventFeed

java.lang.Object
  com.saxonica.stream.feed.EventFeed
      com.saxonica.stream.feed.ComplexNodeEventFeed

All Implemented Interfaces:

Feed

public class ComplexNodeEventFeed
extends EventFeed

This event feed supports instructions that create a document or element node. The events representing the start and end of the element or document are written to the destination receiver during the open() and close() calls. Between these two calls, the child instruction representing the content of the document or element pushes its output to the same destination receiver.

The instruction-dependent code is contained in the processLeft() and processRight() methods of the expression object, which must be a DivisibleInstruction

Constructor Summary

ComplexNodeEventFeed(Expression exp, Feed parentExpressionFeed, Stack<XPathContext> contextStack)

Method Summary

void	close() Finish evaluating the expression.
void	open() Start evaluating the expression.

Methods inherited from class com.saxonica.stream.feed.EventFeed

append, getContext, getContextStack, getExpression, getPipelineConfiguration, getResult, setPipelineConfiguration

Methods inherited from class java.lang.Object

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

Constructor Detail

ComplexNodeEventFeed

public ComplexNodeEventFeed(Expression exp,
                            Feed parentExpressionFeed,
                            Stack<XPathContext> contextStack)

Method Detail

open

public void open()
          throws XPathException

Description copied from class: EventFeed

Start evaluating the expression. This must call open() on the parent expression feed before it does anything else. For the default implementation, this is all that it does. Note that it does not open the destination receiver.

Specified by:

open in interface Feed

Overrides:

open in class EventFeed

Throws:

XPathException - to report any failure

close

public void close()
           throws XPathException

Description copied from class: EventFeed

Finish evaluating the expression. This must call close() on the parent expression feed as the last thing it does. For the default implementation, this is all that it does. Note that it does not close the destination receiver.

Specified by:

close in interface Feed

Overrides:

close in class EventFeed

Throws:

XPathException - to report any failure