Package net.sf.saxon.expr

Interface ItemMappingFunction

All Known Implementing Classes:
AtomicSequenceConverter.AtomicSequenceMappingFunction, AtomicSequenceConverter.ToStringMappingFunction, EmptyTextNodeRemover, ForExpression.MappingAction, FunctionSequenceCoercer.Coercer, IntegratedFunctionCall.ConfigurationCheckingFunction, ItemFilter, ItemMapper, ItemTypeCheckingFunction, WherePopulated
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface 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.

NOTE: Java allows a lambda expression to be used where an ItemMappingFunction is needed, but C# does not (it's not possible in C# to have a class implementing a delegate). So if a delegate is wanted, use ItemMapper, to ensure that it works in both languages.

  • Method Summary

    Modifier and Type
    Method
    Description
    Item
    mapItem(Item item)
    Map one item to another item.

  • Method Details

    • 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 - if a dynamic error occurs