net.sf.farrago.rng
Class FarragoRngUDR

java.lang.Object
  net.sf.farrago.rng.FarragoRngUDR

public abstract class FarragoRngUDR
extends Object

FarragoRngUDR contains implementations for the user-defined routine portion of the RNG plugin example.

Version:

$Id: //open/dev/farrago/examples/rng/src/net/sf/farrago/rng/FarragoRngUDR.java#14 $

Author:

John V. Sichi

Field Summary

private static Logger

tracer

Constructor Summary

FarragoRngUDR()

Method Summary

(package private) static String	getFilename(RngRandomNumberGenerator rng)
static RngmodelPackage	getRngModelPackage(FarragoRepos repos)
static Random	readSerialized(File file)
static int	rng_next_int_internal(int n, String rngName, String filename) Generates the next pseudo-random integer from a particular RNG.
static int	rng_next_int(String rngName, int n) Generates the next pseudo-random integer from a particular RNG.
static void	writeSerialized(File file, Random random)

Methods inherited from class java.lang.Object

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

Field Detail

tracer

private static final Logger tracer

Constructor Detail

FarragoRngUDR

public FarragoRngUDR()

Method Detail

rng_next_int

public static int rng_next_int(String rngName,
                               int n)
                        throws SQLException

Generates the next pseudo-random integer from a particular RNG.

Parameters:

rngName - name of the RNG (possibly qualified)

n - upper limit on generated nonnegative integer, or -1 for unlimited (including negative)

Throws:

SQLException

rng_next_int_internal

public static int rng_next_int_internal(int n,
                                        String rngName,
                                        String filename)
                                 throws SQLException

Generates the next pseudo-random integer from a particular RNG.

Parameters:

n - upper limit on generated nonnegative integer, or -1 for unlimited (including negative)

rngName - fully-qualified name of the RNG

filename - name of the RNG's datafile

Returns:

psuedo-random integer

Throws:

SQLException

getRngModelPackage

public static RngmodelPackage getRngModelPackage(FarragoRepos repos)

writeSerialized

public static void writeSerialized(File file,
                                   Random random)
                            throws IOException

Throws:

IOException

readSerialized

public static Random readSerialized(File file)
                             throws Exception

Throws:

Exception

getFilename

static String getFilename(RngRandomNumberGenerator rng)