Package com.saxonica.ee.stream.adjunct
Class SnapshotFnStreamer
- java.lang.Object
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- com.saxonica.ee.stream.adjunct.StreamingAdjunct
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- com.saxonica.ee.stream.adjunct.ComposingAdjunct
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- com.saxonica.ee.stream.adjunct.SnapshotFnStreamer
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- All Implemented Interfaces:
FeedMaker
public class SnapshotFnStreamer extends ComposingAdjunct implements FeedMaker
Generate streaming code for the snapshot() function
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Constructor Summary
Constructors Constructor Description SnapshotFnStreamer()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description WatchMakergetWatchMaker(boolean forGrouping)Get a WatchMaker, a factory class that creates a Watch to evaluate this expression in streaming mode.ItemFeedmakeComposingAction(WatchManager watchManager, ItemFeed out, XPathContext context)Method that must be implemented in subclasses to supply the feed to which the composed items are sentItemFeedmakeItemFeed(WatchManager watchManager, ItemFeed out, XPathContext context)-
Methods inherited from class com.saxonica.ee.stream.adjunct.StreamingAdjunct
computeStreamability, findConsumingArg, getConfiguration, getDefaultFeedMaker, getExpression, getFeedMaker, makeStreamingAdjunct, setConfiguration, setExpression, toStreamingPattern
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Method Detail
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makeComposingAction
public ItemFeed makeComposingAction(WatchManager watchManager, ItemFeed out, XPathContext context)
Description copied from class:ComposingAdjunctMethod that must be implemented in subclasses to supply the feed to which the composed items are sent- Specified by:
makeComposingActionin classComposingAdjunct- Parameters:
watchManager- the watch managerout- the destination of composed itemscontext- XPath evaluation context- Returns:
- a the relevant ItemFeed
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getWatchMaker
public WatchMaker getWatchMaker(boolean forGrouping)
Description copied from class:StreamingAdjunctGet 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:
getWatchMakerin classComposingAdjunct- 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.
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makeItemFeed
public ItemFeed makeItemFeed(WatchManager watchManager, ItemFeed out, XPathContext context) throws XPathException
- Specified by:
makeItemFeedin interfaceFeedMaker- Throws:
XPathException
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