net.sf.saxon.om

Class Navigator.PrecedingEnumeration

Enclosing Class:
Navigator
Implemented Interfaces:
AxisIterator, SequenceIterator, UnfailingIterator

public static final class Navigator.PrecedingEnumeration
extends Navigator.BaseEnumeration

Helper method to iterate over the preceding axis, or Saxon's internal preceding-or-ancestor axis, by making use of the ancestor, descendant, and preceding-sibling axes.

Field Summary

Fields inherited from class net.sf.saxon.om.AxisIteratorImpl

current, position

Fields inherited from interface net.sf.saxon.om.SequenceIterator

GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

PrecedingEnumeration(NodeInfo start, boolean includeAncestors)
Create an iterator for the preceding or "preceding-or-ancestor" axis (the latter being used internall to support xsl:number)

Method Summary

void
advance()
SequenceIterator
getAnother()
Get another iterator over the same sequence of items, positioned at the start of the sequence.

Methods inherited from class net.sf.saxon.om.Navigator.BaseEnumeration

advance, getAnother, next

Methods inherited from class net.sf.saxon.om.AxisIteratorImpl

atomize, current, getProperties, getStringValue, iterateAxis, moveNext, position

Constructor Details

PrecedingEnumeration

public PrecedingEnumeration(NodeInfo start,
                            boolean includeAncestors)
Create an iterator for the preceding or "preceding-or-ancestor" axis (the latter being used internall to support xsl:number)
Parameters:
start - the initial context node
includeAncestors - true if ancestors of the initial context node are to be included in the result

Method Details

advance

public void advance()
Overrides:
advance in interface Navigator.BaseEnumeration

getAnother

public SequenceIterator getAnother()
Get another iterator over the same sequence of items, positioned at the start of the sequence. It must be possible to call this method at any time, whether none, some, or all of the items in the original iterator have been read. The method is non-destructive: it does not change the state of the original iterator.
Specified by:
getAnother in interface UnfailingIterator
getAnother in interface SequenceIterator
Overrides:
getAnother in interface Navigator.BaseEnumeration
Returns:
a new iterator over the same sequence