net.sf.saxon.expr
Interface ItemMappingFunction

All Known Implementing Classes:

AtomicSequenceConverter.AtomicSequenceMappingFunction, ForExpression.MappingAction

public interface ItemMappingFunction

ItemMappingFunction is an interface that must be satisfied by an object passed to a ItemMappingIterator. It represents an object which, given an Item, can return either another Item, or null.

Method Summary

Item	mapItem(Item item) Map one item to another item.

Method Detail

mapItem

Item mapItem(Item item)
             throws XPathException

Map one item to another item.

Parameters:

item - The input item to be mapped.

Returns:

either the output item, or null.

Throws:

XPathException