com.saxonica.stream.feed
Class AdjacentTextNodeMergerFeed

java.lang.Object
  com.saxonica.stream.feed.ItemFeed
      com.saxonica.stream.feed.AdjacentTextNodeMergerFeed

All Implemented Interfaces:

Feed

public class AdjacentTextNodeMergerFeed
extends ItemFeed

This class is used when a streaming template requests evaluation of a simple content constructor in streaming mode (that is, when it constructs a text, attribute, comment, or PI node based on the contents of the streamed document). It removes empty text nodes arriving on the input, and concatenates adjacent text nodes into a single text node.

Both a Feed and a Watch are needed because a simple content constructor operates on a sequence of nodes without simply atomizing the sequence.

Constructor Summary

AdjacentTextNodeMergerFeed(Expression expr, Feed result, Stack<XPathContext> contextStack)

Method Summary

void	append(Item item) Supply an item to the feed
void	close() Signal the end of the sequence of items
void	open() Start evaluating the expression.

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

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

AdjacentTextNodeMergerFeed

public AdjacentTextNodeMergerFeed(Expression expr,
                                  Feed result,
                                  Stack<XPathContext> contextStack)

Method Detail

open

public void open()
          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

Throws:

XPathException - if a dynamic error occurs

append

public void append(Item item)
            throws XPathException

Supply an item to the feed

Specified by:

append in interface Feed

Specified by:

append in class ItemFeed

Parameters:

item - the item being fed

Throws:

XPathException - to report any failure

close

public void close()
           throws XPathException

Signal the end of the sequence of items

Specified by:

close in interface Feed

Overrides:

close in class ItemFeed

Throws:

XPathException - to report any failure