Package net.sf.saxon.pull
This package provides classes that interface Saxon to an XML parser that supplies data in the form
of a stream of events. It provides an interface, PullProvider, that is an abstraction
over the pull parser interfaces provided on Java and .NET, and that can in principle be implemented
by other data sources to deliver input documents as if they came from a parser.
The API, defined in class PullProvider, is loosely modelled on the StAX XMLReader
API. It is not identical, because it is designed as an intimate and efficient interface that integrates with
Saxon concepts such as the SequenceIterator and the NamePool. A class
StaxBridge is available that provides the PullProvider interface on top of a
StAX pull parser. In the .NET build, a similar class DotNetPullProvider interfaces Saxon to the
Microsoft XmlTextReader.
A source of data delivered by a PullProvider may be presented either as a PullSource
or as a StaxSource. Both these are accepted by any Saxon interface that allows a JAXP
Source object to be supplied.
Additional implementations of PullProvider are available in Saxon-PE and
Saxon-EE, specifically, implementations that deliver data by walking a Saxon tree structure
(represented by class NodeInfo), and implementations that allow queries to be evaluated
in pull mode, with lazy construction of temporary document and element nodes.
Some examples of application code using the pull interface with Saxon are provided in the
PullExamples.java file in the samples directory.
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ClassDescriptionAn extension of StAXSource that makes the source active: that is, able to deliver itself to a Saxon
Receiver.This class bridges between the JAXP 1.3 NamespaceContext interface and Saxon's equivalent NamespaceResolver interface.A PullConsumer consumes all the events supplied by a PullProvider, doing nothing with them.Enumeration of event types that can occur in thePullProviderinterfacePullFilter is a pass-through filter class that links one PullProvider to another PullProvider in a pipeline.PullProvider is Saxon's pull-based interface for reading XML documents and XDM sequences.This class copies a document by using the pull interface to read the input document, and the push interface to write the output document.PullPushTee is a pass-through filter class that links one PullProvider to another PullProvider in a pipeline, copying all events that are read into a push pipeline, supplied in the form of a Receiver.A PullSource is a JAXP Source that encapsulates a PullProvider - that is, an object that supplies an XML document as a sequence of events that are read under the control of the recipient.This class implements the Saxon PullProvider API on top of a standard StAX parser (or any other StAX XMLStreamReader implementation)PullProvider is Saxon's pull-based interface for reading XML documents and XDM sequences.This class is used to represent unparsed entities in the PullProvider interface