Package net.sf.saxon.tree.util
Class Navigator.DescendantEnumeration
java.lang.Object
net.sf.saxon.tree.util.Navigator.DescendantEnumeration
- All Implemented Interfaces:
Closeable
,AutoCloseable
,SequenceIterator
,AxisIterator
- Enclosing class:
Navigator
General-purpose implementation of the descendant and descendant-or-self axes,
in terms of the child axis.
But it also has the option to return the descendants in reverse document order;
this is used when evaluating the preceding axis. Note that the includeSelf option
should not be used when scanning in reverse order, as the self node will always be
returned first.
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Constructor Summary
ConstructorsConstructorDescriptionDescendantEnumeration
(NodeInfo start, boolean includeSelf, boolean forwards) Create an iterator over the descendant or descendant-or-self axis -
Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface net.sf.saxon.om.SequenceIterator
close
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Constructor Details
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DescendantEnumeration
Create an iterator over the descendant or descendant-or-self axis- Parameters:
start
- the initial context nodeincludeSelf
- true if the "self" node is to be includedforwards
- true for a forwards iteration, false for reverse order
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Method Details
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next
Description copied from interface:SequenceIterator
Get the next item in the sequence. This method changes the state of the iterator.- Specified by:
next
in interfaceAxisIterator
- Specified by:
next
in interfaceSequenceIterator
- Returns:
- the next item, or null if there are no more items. Once a call on next() has returned null, no further calls should be made. The preferred action for an iterator if subsequent calls on next() are made is to return null again, and all implementations within Saxon follow this rule.
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advance
public void advance()
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