com.saxonica.ee.stream.feed

Class ElementCreatorFeed

java.lang.Object

com.saxonica.ee.stream.feed.ItemFeed

com.saxonica.ee.stream.feed.ComplexNodeEventFeed

com.saxonica.ee.stream.feed.ElementCreatorFeed

All Implemented Interfaces:

Feed

public class ElementCreatorFeed
extends ComplexNodeEventFeed

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

Constructor Summary

Constructors

Constructor and Description
ElementCreatorFeed(Expression exp, Feed parentExpressionFeed, XPathContext context)

Method Summary

Modifier and Type	Method and Description
protected static void	generateElementEnd(ComplexNodeEventFeed feed, XPathContext context) In streaming mode, process the right half of the instruction (for example, to end a new document or element)
protected static void	generateElementStart(ComplexNodeEventFeed feed, XPathContext context) In streaming mode, process the first half of an element creation instruction (to start a new element)
protected void	processLeft(XPathContext context) In streaming mode, process the first half of the instruction (for example, to start a new document or element)
protected void	processRight(XPathContext context) In streaming mode, process the right half of the instruction (for example, to end a new document or element)
java.lang.String	toString()

Methods inherited from class com.saxonica.ee.stream.feed.ComplexNodeEventFeed

close, endSelectedParentNode, getReceiver, open, processItem, setReceiver, startSelectedParentNode

Methods inherited from class com.saxonica.ee.stream.feed.ItemFeed

dynamicError, getContext, getExpression, getPipelineConfiguration, getResult, getTerminator, hasFailed, processItems, setExpression, setHasFailed, setPipelineConfiguration, setTerminator

Methods inherited from class java.lang.Object

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

Constructor Detail

ElementCreatorFeed

public ElementCreatorFeed(Expression exp,
                          Feed parentExpressionFeed,
                          XPathContext context)

Method Detail

processLeft

protected void processLeft(XPathContext context)
                    throws XPathException

In streaming mode, process the first half of the instruction (for example, to start a new document or element)

Specified by:

processLeft in class ComplexNodeEventFeed

Parameters:

context - The dynamic context

Throws:

XPathException - if a dynamic error occurs

processRight

protected void processRight(XPathContext context)
                     throws XPathException

In streaming mode, process the right half of the instruction (for example, to end a new document or element)

Specified by:

processRight in class ComplexNodeEventFeed

Parameters:

context - The dynamic context

Throws:

XPathException - if a dynamic error occurs

generateElementStart

protected static void generateElementStart(ComplexNodeEventFeed feed,
                                           XPathContext context)
                                    throws XPathException

In streaming mode, process the first half of an element creation instruction (to start a new element)

Parameters:

feed - the Feed that is processing the instruction in streaming mode

context - XPathContext object.

Throws:

XPathException - if a dynamic error occurs

generateElementEnd

protected static void generateElementEnd(ComplexNodeEventFeed feed,
                                         XPathContext context)
                                  throws XPathException

In streaming mode, process the right half of the instruction (for example, to end a new document or element)

Parameters:

feed - the feed to which the element end event should be sent

context - XPathContext object.

Throws:

XPathException - if a dynamic error occurs

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object