net.sf.saxon.expr
Class Atomizer.AtomizingFunction

java.lang.Object
  net.sf.saxon.expr.Atomizer.AtomizingFunction

All Implemented Interfaces:

MappingFunction

Enclosing class:

Atomizer

public static class Atomizer.AtomizingFunction

extends java.lang.Object

implements MappingFunction

Implement the mapping function. This is stateless, so there is a singleton instance.

Method Summary

static SequenceIterator	getAtomizingIterator(SequenceIterator base)
static Atomizer.AtomizingFunction	getInstance() Get the singleton instance
java.lang.Object	map(Item item, XPathContext context) Map one item to a sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static Atomizer.AtomizingFunction getInstance()

Get the singleton instance

Returns:

the singleton instance of this mapping function

getAtomizingIterator

public static SequenceIterator getAtomizingIterator(SequenceIterator base)

map

public java.lang.Object map(Item item,
                            XPathContext context)
                     throws XPathException

Description copied from interface: MappingFunction

Map one item to a sequence.

Specified by:

map in interface MappingFunction

Parameters:

item - The item to be mapped. If context is supplied, this must be the same as context.currentItem().

context - The processing context. Some mapping functions use this because they require context information. Some mapping functions modify the context by maintaining the context item and position. In other cases, the context may be null.

Returns:

either (a) a SequenceIterator over the sequence of items that the supplied input item maps to, or (b) an Item if it maps to a single item, or (c) null if it maps to an empty sequence.

Throws:

XPathException