net.sf.saxon.evpull
Class ComplexContentProcessor

java.lang.Object
  net.sf.saxon.evpull.ComplexContentProcessor

All Implemented Interfaces:

EventIterator, PullEvent

public class ComplexContentProcessor
extends Object
implements EventIterator

The ComplexContentProcessor is an EventIterator that deals with the events occurring between a startElement and endElement (or startDocument and endDocument) according to the XSLT/XQuery rules for constructing complex content. This includes:

• Converting atomic values to text nodes (inserting space as a separator between adjacent nodes)
• Replacing nested document nodes by their children
• Merging adjacent text nodes and dropping zero-length text nodes
• Detecting mispositioned or duplicated attribute and namespace nodes

Note that if the content includes nodes such as element nodes, these will not be decomposed into a sequence of tree events, they will simply be returned as nodes.

Constructor Summary

ComplexContentProcessor(Configuration config, EventIterator base)
Create the ComplexContentProcessor

Method Summary

boolean	isFlatSequence() Determine whether the EventIterator returns a flat sequence of events, or whether it can return nested event iterators
PullEvent	next() Get the next event in the sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ComplexContentProcessor

public ComplexContentProcessor(Configuration config,
                               EventIterator base)

Create the ComplexContentProcessor

Parameters:

config - the Saxon Configuration

base - the EventIterator that delivers the content of the element or document node

Method Detail

next

public PullEvent next()
               throws XPathException

Get the next event in the sequence. This will never be an EventIterator.

Specified by:

next in interface EventIterator

Returns:

the next event, or null when the sequence is exhausted

Throws:

XPathException - if a dynamic evaluation error occurs

isFlatSequence

public boolean isFlatSequence()

Determine whether the EventIterator returns a flat sequence of events, or whether it can return nested event iterators

Specified by:

isFlatSequence in interface EventIterator

Returns:

true if the next() method is guaranteed never to return an EventIterator