net.sf.saxon.s9api
public class XdmEmptySequence extends XdmValue
This is a singleton class: there is only one instance, which may be obtained using the XdmEmptySequence 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.
Method Summary | |
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static XdmEmptySequence | getInstance()
Return the singleton instance of this class |
int | size()
Get the number of items in the sequence |
Returns: an XdmValue representing an empty sequence
Returns: the number of items in the value - always zero