com.saxonica.stream.adjunct

Class SumAdjunct

java.lang.Object

com.saxonica.stream.adjunct.StreamingAdjunct

com.saxonica.stream.adjunct.SumAdjunct

public class SumAdjunct
extends StreamingAdjunct

Generate streaming code for the sum() function.

Constructor Summary

Constructors

Constructor and Description
SumAdjunct()

Method Summary

Methods

Modifier and Type	Method and Description
FeedMaker	getFeedMaker(Expression expression, int arg) Get a FeedMaker, a factory class that creates a Feed 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

SumAdjunct

public SumAdjunct()

Method Detail

getFeedMaker

public FeedMaker getFeedMaker(Expression expression,
                     int arg)

Description copied from class: StreamingAdjunct

Get a FeedMaker, a factory class that creates a Feed to evaluate this expression in streaming mode.

Overrides:

getFeedMaker in class StreamingAdjunct

Parameters:

expression - 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 FeedMaker to evaluate the expression, or null if it is not streamable with respect to the specificed argument.