LetExpressionAdjunctB

java.lang.Object

com.saxonica.ee.stream.adjunct.StreamingAdjunct

com.saxonica.ee.stream.adjunct.TransmissionAdjunct

com.saxonica.ee.stream.adjunct.LetExpressionAdjunctB

All Implemented Interfaces:: FeedMaker

public class LetExpressionAdjunctB extends TransmissionAdjunct

Compiles streaming code to implement a Let expression for which the "action" part (the return clause) is consuming

Constructor Summary

Constructors

Constructor

Description

LetExpressionAdjunctB()
Method Summary

Modifier and Type

Method

Description

WatchMaker

getWatchMaker(boolean forGrouping)

Get a WatchMaker, a factory class that creates a Watch to evaluate this expression in streaming mode.

ItemFeed

makeItemFeed(WatchManager watchManager, ItemFeed out, XPathContext context)

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

Methods inherited from class com.saxonica.ee.stream.adjunct.StreamingAdjunct
computeStreamability, 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

Constructor Details
- LetExpressionAdjunctB
  
  public LetExpressionAdjunctB()
Method Details
- getWatchMaker
  
  public WatchMaker getWatchMaker(boolean forGrouping) throws XPathException
  
  Description copied from class: StreamingAdjunct
  
  Get a WatchMaker, a factory class that creates a Watch to evaluate this expression in streaming mode. This method will only be called if the getImplementationMethod() method of the expression includes the value Expression.WATCH_METHOD
  
  Overrides:
  
  getWatchMaker in class TransmissionAdjunct
  
  Parameters:
  
  forGrouping - true if the selected items are being grouped
  
  Returns:
  
  a Watchmaker to evaluate the expression, or null if it is not streamable with respect to the specificed argument.
  
  Throws:
  
  XPathException - in the event of a failure
- makeItemFeed
  
  public ItemFeed makeItemFeed(WatchManager watchManager, ItemFeed out, XPathContext context) throws XPathException
  
  Throws:
  
  XPathException