OutermostStreamer

java.lang.Object

com.saxonica.ee.stream.adjunct.StreamingAdjunct

com.saxonica.ee.stream.adjunct.TransmissionAdjunct

com.saxonica.ee.stream.adjunct.FilteringAdjunct

com.saxonica.ee.stream.adjunct.OutermostStreamer

All Implemented Interfaces:: FeedMaker

public class OutermostStreamer extends FilteringAdjunct implements FeedMaker

Streaming code for an outermost() function call.

Constructor Summary

Constructors

Constructor

Description

OutermostStreamer()
Method Summary

Modifier and Type

Method

Description

PostureAndSweep

computeStreamability(ContextItemStaticInfoEE contextInfo, List<String> reasons)

Get the posture and sweep of this expression as defined in the W3C streamability specifications.

FilteringFeed.Filter

makeFilter(XPathContext context, ItemFeed out)

Make a filter for the event stream

Methods inherited from class com.saxonica.ee.stream.adjunct.FilteringAdjunct
makeItemFeed

Methods inherited from class com.saxonica.ee.stream.adjunct.TransmissionAdjunct
getWatchMaker, makeTransmissionFlow

Methods inherited from class com.saxonica.ee.stream.adjunct.StreamingAdjunct
emptyAdjunctMap, findConsumingArg, genId, getConfiguration, getDefaultFeedMaker, getExpression, getFeedMaker, makeStreamingAdjunct, setConfiguration, setExpression, toStreamingPattern

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.saxonica.ee.stream.feed.FeedMaker
makeItemFeed

Constructor Details
- OutermostStreamer
  
  public OutermostStreamer()
Method Details
- computeStreamability
  
  public PostureAndSweep computeStreamability(ContextItemStaticInfoEE contextInfo, List<String> reasons)
  
  Get the posture and sweep of this expression as defined in the W3C streamability specifications. This provides an assessment of stylesheet code against the W3C criteria for guaranteed streamability, and is implemented to allow these criteria to be tested. It is not the case that all expression that emerge as streamable from this analysis are currently capable of being streamed by Saxon
  
  Overrides:
  
  computeStreamability in class StreamingAdjunct
  
  Parameters:
  
  contextInfo - Information about the context item type and posture
  
  reasons - the caller may supply a list, in which case the implementation may add to this
  
  Returns:
  
  the posture and sweep of the expression
- makeFilter
  
  public FilteringFeed.Filter makeFilter(XPathContext context, ItemFeed out) throws XPathException
  
  Description copied from class: FilteringAdjunct
  
  Make a filter for the event stream
  
  Specified by:
  
  makeFilter in class FilteringAdjunct
  
  Parameters:
  
  context - the XPath dynamic context
  
  out - the destination for the filtered events
  
  Returns:
  
  a filter that can be added to the event stream
  
  Throws:
  
  XPathException - if a dynamic evaluation error occurs