net.sf.saxon.option.exslt

Class Random

java.lang.Object

net.sf.saxon.option.exslt.Random

public abstract class Random
extends Object

This class implements extension functions in the http://exslt.org/random namespace.

Version:

1.0, 30.06.2004 Rewritten by Michael Kay to generate a SequenceIterator

Author:

Martin Szugat

Constructor Summary

Constructors

Constructor and Description
Random()

Method Summary

Methods

Modifier and Type	Method and Description
static DoubleValue	randomSequence() Returns a single random number X between 0 and 1.
static SequenceIterator	randomSequence(int numberOfItems) Returns a sequence of random numbers between 0 and 1.
static SequenceIterator	randomSequence(int numberOfItems, double seed) Returns a sequence of random numbers between 0 and 1.

Methods inherited from class java.lang.Object

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

Constructor Detail

Random

public Random()

Method Detail

randomSequence

public static SequenceIterator randomSequence(int numberOfItems,
                              double seed)
                                       throws IllegalArgumentException

Returns a sequence of random numbers between 0 and 1.

Parameters:

numberOfItems - number of random items in the sequence.

seed - the initial seed.

Returns:

sequence of random numbers as an iterator.

Throws:

IllegalArgumentException - numberOfItems is not positive.

randomSequence

public static SequenceIterator randomSequence(int numberOfItems)
                                       throws IllegalArgumentException

Returns a sequence of random numbers between 0 and 1.

Parameters:

numberOfItems - number of random items in the sequence.

Returns:

sequence of random numbers.

Throws:

IllegalArgumentException - numberOfItems is not positive.

randomSequence

public static DoubleValue randomSequence()
                                  throws XPathException

Returns a single random number X between 0 and 1.

Returns:

sequence random number.

Throws:

XPathException