Interface ContextMappingFunction

All Known Implementing Classes:
ForEach, ForEachGroup, MultithreadedForEach, PathExpression, SlashExpression

public interface ContextMappingFunction

ContextMappingFunction is an interface that must be satisfied by an object passed to a ContextMappingIterator. It represents an object which, given an Item, can return a SequenceIterator that delivers a sequence of zero or more Items.

This is a specialization of the more general MappingFunction class: it differs in that each item being processed becomes the context item while it is being processed.

Method Summary
 SequenceIterator map(XPathContext context)
          Map one item to a sequence.

Method Detail


SequenceIterator map(XPathContext context)
                     throws XPathException
Map one item to a sequence.

context - The processing context. The item to be mapped is the context item identified from this context: the values of position() and last() also relate to the set of items being mapped
a SequenceIterator over the sequence of items that the supplied input item maps to

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