net.sf.saxon.om
Interface ValueRepresentation

All Known Subinterfaces:

DocumentInfo, Item, NodeInfo, SiblingCountingNode, VirtualNode

All Known Implementing Classes:

AtomicValue, DocumentImpl, DocumentWrapper, DocumentWrapper, DocumentWrapper, NamespaceIterator.NamespaceNodeImpl, NodeImpl, NodeWrapper, NodeWrapper, NodeWrapper, Orphan, StrippedDocument, StrippedNode, TextFragmentValue, TinyDocumentImpl, TinyNodeImpl, UnconstructedDocument, UnconstructedParent, Value, VirtualCopy, VirtualDocumentCopy

public interface ValueRepresentation

A ValueRepresentation is a representation of a Value. This is a marker interface used to represent the union of two classes: Value, and NodeInfo. Either of these two classes can be used to represent a value. The class is used primarily to represent the value of a variable.

This class is intended primarily for internal use, and should not be considered part of the Saxon public API.

Field Summary

static ValueRepresentation[]

EMPTY_VALUE_ARRAY An empty array of ValueRepresentation objects

Method Summary

java.lang.String

getStringValue() Convert the value to a string, using the serialization rules.

Field Detail

EMPTY_VALUE_ARRAY

public static final ValueRepresentation[] EMPTY_VALUE_ARRAY

An empty array of ValueRepresentation objects

Method Detail

getStringValue

public java.lang.String getStringValue()
                                throws XPathException

Convert the value to a string, using the serialization rules. For atomic values this is the same as a cast; for sequence values it gives a space-separated list.

Throws:

XPathException - The method can fail if evaluation of the value has been deferred, and if a failure occurs during the deferred evaluation. No failure is possible in the case of an AtomicValue.