Package net.sf.saxon.s9api
Class XdmEmptySequence
java.lang.Object
net.sf.saxon.s9api.XdmValue
net.sf.saxon.s9api.XdmEmptySequence
The class
XdmEmptySequence
represents an empty sequence in the XDM Data Model.
This is a singleton class: there is only one instance, which may be obtained
using the getInstance()
method.
An empty sequence may also be represented by an XdmValue
whose length happens to be zero.
Applications should therefore not test to see whether an object is an instance of this class
in order to decide whether it is empty.
Note: in interfaces that expect an XdmItem
, an empty sequence is represented by a
Java null value.
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Method Summary
Modifier and TypeMethodDescriptionstatic XdmEmptySequence
Return the singleton instance of this classint
size()
Get the number of items in the sequenceMethods inherited from class net.sf.saxon.s9api.XdmValue
append, documentOrder, getUnderlyingValue, isEmpty, itemAt, iterator, makeSequence, makeValue, matches, select, stream, subsequence, toString, where, wrap, wrap
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface java.lang.Iterable
forEach, spliterator