Package com.saxonica.ee.stream

This package and its subpackages contain classes used to support streaming and document projection.

See: Description

Interface Summary

Interface	Description
PostureGetter	This interface defines a method used to get the context item posture.
PushToPull.Pusher

Class Summary

Class	Description
AccumulatorRegistryEE	Static registry containing the accumulators defined within a package; the Saxon-EE subclass includes support for streamed accumulators.
ComponentInversion	This class represents the inversion of a template or function body
ContentDetector	A ContentDetector is a filter that can be added to a Receiver pipeline to note whether the current element node has children.
CurrentGroupPattern	This is a special pattern that matches the "anchor node".
Inversion	This class represents an expression that has been "inverted" (in the Jackson sense) so that its execution is push-driven, that is, driven by events from the streamed document.
Inversion.PushAction	A PushAction is a collection of data that together represents the strategy for how an expression should be evaluated in push mode.
ManualGroupIterator	The class ManualGroupIterator represents an iterator that is never repositioned, but can be used to represent the focus in the dynamic context.
ManualRegexIterator	The class ManualRegexIterator represents an iterator that is never repositioned, but can be used to represent the current regex groups in the dynamic context.
PostureAndSweep	This class defines a composite property of an expression containing both the posture and sweep of the expression, as defined in the XSLT 3.0 specification.
Projector	This class uses a PathMap to do document projection.
PushToPull	This class evaluates an expression in push mode in one thread, and provides an iterator to read the results of the expression in pull mode in the original thread.
SequenceFilter	A sequence writer that passes on only those items that satisfy a filter predicate.
Streamability	Supporting class for assessing the streamability of expressions.
StreamableUserFunction	Represents a used-defined XSLT function whose declared streamability is other than "unclassified"
StreamerMap
StreamingPatternMaker	Factory class to make a streaming pattern from an expression.
StreamingSequenceWriter	A SequenceWriter that can be used on a streaming pipeline to direct the output of an operation to the next expression in the pipeline
StreamInstr	Implementation of the xsl:source-document (streamable="yes") instruction

Enum Summary

Enum	Description
Posture	The posture of an expression defines the relationship of the result to a streamed input document, as defined in the XSLT 3.0 specification.
Sweep	The posture of an expression defines the relationship of the result to a streamed input document, as defined in the XSLT 3.0 specification.

Package com.saxonica.ee.stream Description

This package and its subpackages contain classes used to support streaming and document projection. In principle these facilities are applicable both to XSLT and XQuery; the streamed evaluation of XPath expressions is also used during schema validation, to process identity constraints.

None of these classes will be used directly by typical user applications.

This package contains classes that watch for events coming from the streamed document. Different kinds of watch are associated with different expressions and perform differing actions with these events.

The instantiation of watch classes, calling them to test whether they are interested in particular events, and remembering when to de-activate them, is all handled by the WatchManager.