com.saxonica.stream.adjunct
Class ItemCheckerAdjunct

java.lang.Object
  extended by com.saxonica.stream.adjunct.StreamingAdjunct
      extended by com.saxonica.stream.adjunct.ItemCheckerAdjunct

public class ItemCheckerAdjunct
extends StreamingAdjunct

Generate streaming code for an item checker


Constructor Summary
ItemCheckerAdjunct()
           
 
Method Summary
 FeedMaker getFeedMaker(Expression expr, int arg)
          Get a FeedMaker, a factory class that creates a Watch to evaluate this expression in streaming mode.
 
Methods inherited from class com.saxonica.stream.adjunct.StreamingAdjunct
getConfiguration, getWatchMaker, makeStreamingAdjunct, setConfiguration
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ItemCheckerAdjunct

public ItemCheckerAdjunct()
Method Detail

getFeedMaker

public FeedMaker getFeedMaker(Expression expr,
                              int arg)
Description copied from class: StreamingAdjunct
Get a FeedMaker, a factory class that creates a Watch to evaluate this expression in streaming mode.

Overrides:
getFeedMaker in class StreamingAdjunct
Parameters:
expr - the expression to be evaluated in streaming mode
arg - identifies the argument with respect to which the expression is to be inverted: usually 0 to indicate the first argument is the value that is streamed. Argument numbering is the same as the sequence of arguments/operands returned by the method Expression.iterateSubExpressions()
Returns:
a Watchmaker to evaluate the expression, or null if it is not streamable with respect to the specificed argument.


Copyright (c) 2004-2010 Saxonica Limited. All rights reserved.