net.sf.saxon.expr

Class PositionIterator

public class PositionIterator extends Object implements SequenceIterator, LookaheadIterator

A PositionIterator selects a subsequence of a sequence
Method Summary
Itemcurrent()
SequenceIteratorgetAnother()
Get another iterator to return the same nodes
intgetProperties()
Get properties of this iterator, as a bit-significant integer.
booleanhasNext()
Test whether there are any more items available in the enumeration
static SequenceIteratormake(SequenceIterator base, int min, int max)
Static factory method.
Itemnext()
Get the next item if there is one
intposition()

Method Detail

current

public Item current()

getAnother

public SequenceIterator getAnother()
Get another iterator to return the same nodes

getProperties

public int getProperties()
Get properties of this iterator, as a bit-significant integer.

Returns: the properties of this iterator. This will be some combination of properties such as PositionIterator, PositionIterator, and PositionIterator. 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.

hasNext

public boolean hasNext()
Test whether there are any more items available in the enumeration

make

public static SequenceIterator make(SequenceIterator base, int min, int max)
Static factory method. Creates a PositionIterator, unless the base Iterator is an ArrayIterator, in which case it optimizes by creating a new ArrayIterator directly over the underlying array. This optimization is important when doing recursion over a node-set using repeated calls of $nodes[position()>1]

Parameters: base An iteration of the items to be filtered min The position of the first item to be included (base 1) max The position of the last item to be included (base 1)

next

public Item next()
Get the next item if there is one

position

public int position()