org.treetank.service.xml.xpath.axis

Class RangeAxis

java.lang.Object

org.treetank.axis.AbsAxis

org.treetank.service.xml.xpath.axis.RangeAxis

All Implemented Interfaces:

Iterable<Long>, Iterator<Long>

public class RangeAxis
extends AbsAxis

RangeExpr

A range expression can be used to construct a sequence of consecutive integers.

If either operand is an empty sequence, or if the integer derived from the first operand is greater than the integer derived from the second operand, the result of the range expression is an empty sequence.

If the two operands convert to the same integer, the result of the range expression is that integer. Otherwise, the result is a sequence containing the two integer operands and every integer between the two operands, in increasing order.

Constructor Summary

Constructors

Constructor and Description
RangeAxis(INodeReadTrx rtx, AbsAxis mFrom, AbsAxis mTo) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNext()

Methods inherited from class org.treetank.axis.AbsAxis

addAtomicToItemList, close, getItemList, getNode, getStartKey, isSelfIncluded, iterator, moveTo, next, remove, reset, resetToLastKey, resetToStartKey

Methods inherited from class java.lang.Object

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

Constructor Detail

RangeAxis

public RangeAxis(INodeReadTrx rtx,
         AbsAxis mFrom,
         AbsAxis mTo)

Constructor. Initializes the internal state.

Parameters:

rtx - Exclusive (immutable) trx to iterate with.

mFrom - start of the range

mTo - the end of the range

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<Long>

Specified by:

hasNext in class AbsAxis