ConditionalBlockAdjunct

java.lang.Object
- com.saxonica.ee.stream.adjunct.StreamingAdjunct
- - com.saxonica.ee.stream.adjunct.TransmissionAdjunct
  - - com.saxonica.ee.stream.adjunct.ConditionalBlockAdjunct

All Implemented Interfaces:

FeedMaker
```
public class ConditionalBlockAdjunct
extends TransmissionAdjunct
implements FeedMaker
```
Generate streaming code for a conditional Block, that is a sequence constructor containing xsl:on-empty and/or xsl:on-not-empty instructions

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class ConditionalBlockAdjunct.ConditionalBlockFeed

Constructor Summary

Constructors
Constructor Description

ConditionalBlockAdjunct()

Method Summary

All Methods Instance Methods Concrete Methods
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 Detail
  - ConditionalBlockAdjunct
```
public ConditionalBlockAdjunct()
```
- Method Detail
  - getWatchMaker
```
public WatchMaker getWatchMaker(boolean forGrouping)
                         throws XPathException
```
    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
```
    Specified by:
    
    makeItemFeed in interface FeedMaker
    
    Throws:
    
    XPathException