com.saxonica.ee.stream.feed

Class ShallowCopyEventFeed

java.lang.Object

com.saxonica.ee.stream.feed.ItemFeed

com.saxonica.ee.stream.feed.ShallowCopyEventFeed

All Implemented Interfaces:

Feed

public class ShallowCopyEventFeed
extends ItemFeed

This event feed implements an implicit xsl:copy instruction used in a built-in template. The events representing the start and end of the input 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
ShallowCopyEventFeed(Mode mode, Feed parentExpressionFeed, XPathContext context)

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Finish evaluating the expression.
void	open(Terminator terminator) Start evaluating the expression.
void	processItem(Item item) Supply one item towards the streamed input of the expression

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ShallowCopyEventFeed

public ShallowCopyEventFeed(Mode mode,
                    Feed parentExpressionFeed,
                    XPathContext context)

Method Detail

open

public void open(Terminator terminator)
          throws XPathException

Description copied from class: ItemFeed

Start evaluating the expression. The default implementation does nothing.

Specified by:

open in interface Feed

Overrides:

open in class ItemFeed

Parameters:

terminator - used to achieve early exit

Throws:

XPathException - if a dynamic error occurs

processItem

public void processItem(Item item)
                 throws XPathException

Description copied from class: ItemFeed

Supply one item towards the streamed input of the expression

Specified by:

processItem in interface Feed

Specified by:

processItem in class ItemFeed

Parameters:

item - the item to be supplied

Throws:

XPathException - May be raised if a dynamic error occurs

close

public void close()
           throws XPathException

Description copied from class: ItemFeed

Finish evaluating the expression. The default implementation does nothing.

Specified by:

close in interface Feed

Overrides:

close in class ItemFeed

Throws:

XPathException - if a dynamic error occurs