Package com.saxonica.ee.stream.adjunct
Class DeepEqualStreamer
java.lang.Object
com.saxonica.ee.stream.adjunct.StreamingAdjunct
com.saxonica.ee.stream.adjunct.DeepEqualStreamer
- All Implemented Interfaces:
FeedMaker
Implement streaming of deep-equal function. This is complicated by the fact that
we need separate implementations depending on which argument is being streamed.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptiongetWatchMaker
(boolean forGrouping) Get a WatchMaker, a factory class that creates a Watch to evaluate this expression in streaming mode.makeItemFeed
(WatchManager watchManager, ItemFeed out, XPathContext context) Methods inherited from class com.saxonica.ee.stream.adjunct.StreamingAdjunct
computeStreamability, emptyAdjunctMap, findConsumingArg, genId, getConfiguration, getDefaultFeedMaker, getExpression, getFeedMaker, makeStreamingAdjunct, setConfiguration, setExpression, toStreamingPattern
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Constructor Details
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DeepEqualStreamer
public DeepEqualStreamer()
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Method Details
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getWatchMaker
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 valueExpression.WATCH_METHOD
- Overrides:
getWatchMaker
in classStreamingAdjunct
- 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
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makeItemFeed
public ItemFeed makeItemFeed(WatchManager watchManager, ItemFeed out, XPathContext context) throws XPathException - Specified by:
makeItemFeed
in interfaceFeedMaker
- Throws:
XPathException
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