net.sf.saxon.expr

Class EveryItemMappingIterator

Implemented Interfaces:
SequenceIterator

public final class EveryItemMappingIterator
extends java.lang.Object
implements SequenceIterator

EveryItemMappingIterator applies a mapping function to each item in a sequence. The mapping function always returns a single item (never null)

This is a specialization of the more general MappingIterator class, for use in cases where a single input item always maps to exactly one output item

Fields inherited from interface net.sf.saxon.om.SequenceIterator

GROUNDED, LAST_POSITION_FINDER, LOOKAHEAD

Constructor Summary

EveryItemMappingIterator(SequenceIterator base, ItemMappingFunction action)
Construct an ItemMappingIterator that will apply a specified ItemMappingFunction to each Item returned by the base iterator.

Method Summary

Item
current()
SequenceIterator
getAnother()
int
getProperties()
Get properties of this iterator, as a bit-significant integer.
Item
next()
int
position()

Constructor Details

EveryItemMappingIterator

public EveryItemMappingIterator(SequenceIterator base,
                                ItemMappingFunction action)
Construct an ItemMappingIterator that will apply a specified ItemMappingFunction to each Item returned by the base iterator.
Parameters:
base - the base iterator
action - the mapping function to be applied

Method Details

current

public Item current()
Specified by:
current in interface SequenceIterator

getAnother

public SequenceIterator getAnother()
            throws XPathException
Specified by:
getAnother in interface SequenceIterator

getProperties

public int getProperties()
Get properties of this iterator, as a bit-significant integer.
Specified by:
getProperties in interface SequenceIterator
Returns:
the properties of this iterator. This will be some combination of properties such as SequenceIterator.GROUNDED, SequenceIterator.LAST_POSITION_FINDER, and SequenceIterator.LOOKAHEAD. It is always acceptable to return the value zero, indicating that there are no known special properties. It is acceptable for the properties of the iterator to change depending on its state.

next

public Item next()
            throws XPathException
Specified by:
next in interface SequenceIterator

position

public int position()
Specified by:
position in interface SequenceIterator