Interface MappingFunction<F extends Item,T extends Item>

All Known Implementing Classes:
Atomizer.AtomizingFunction, ForExpression.MappingAction

public interface MappingFunction<F extends Item,T extends Item>
MappingFunction is an interface that must be satisfied by an object passed to a MappingIterator. It represents an object which, given an Item, can return a SequenceIterator that delivers a sequence of zero or more Items. This is a generic interface, where F represents the type of the input to the mapping function, and T represents the type of the result
  • Method Summary

    Modifier and Type
    Method
    Description
    map(F item)
    Map one item to a sequence.
  • Method Details

    • map

      SequenceIterator<T> map(F item) throws XPathException
      Map one item to a sequence.
      Parameters:
      item - The item to be mapped.
      Returns:
      one of the following: (a) a SequenceIterator over the sequence of items that the supplied input item maps to, or (b) null if it maps to an empty sequence.
      Throws:
      XPathException - if a dynamic error occurs