edu.umn.cs.spatialHadoop.mapred

Class RandomShapeGenerator<S extends Shape>

java.lang.Object

edu.umn.cs.spatialHadoop.mapred.RandomShapeGenerator<S>

Type Parameters:

S -

public class RandomShapeGenerator<S extends Shape>
extends java.lang.Object

A record reader that generates random shapes in a specified area out of the blue.

Author:

Ahmed Eldawy

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RandomShapeGenerator.DistributionType

Constructor Summary

Constructors

Constructor and Description
RandomShapeGenerator(Configuration job, edu.umn.cs.spatialHadoop.mapred.RandomInputFormat.GeneratedSplit split) Initialize from a FileSplit
RandomShapeGenerator(long size, Rectangle mbr, RandomShapeGenerator.DistributionType type, int rectsize, long seed)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
Rectangle	createKey()
S	createValue()
static void	generatePoint(Point p, Rectangle mbr, RandomShapeGenerator.DistributionType type, java.util.Random rand)
long	getPos()
float	getProgress()
boolean	next(Rectangle key, S value)
static double	nextGaussian(java.util.Random rand)
void	setShape(S shape)

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomShapeGenerator

public RandomShapeGenerator(Configuration job,
                    edu.umn.cs.spatialHadoop.mapred.RandomInputFormat.GeneratedSplit split)
                     throws java.io.IOException

Initialize from a FileSplit

Parameters:

job -

split -

Throws:

java.io.IOException

RandomShapeGenerator

public RandomShapeGenerator(long size,
                    Rectangle mbr,
                    RandomShapeGenerator.DistributionType type,
                    int rectsize,
                    long seed)

Method Detail

setShape

public void setShape(S shape)

next

public boolean next(Rectangle key,
           S value)
             throws java.io.IOException

Throws:

java.io.IOException

createKey

public Rectangle createKey()

createValue

public S createValue()

getPos

public long getPos()
            throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

getProgress

public float getProgress()
                  throws java.io.IOException

Throws:

java.io.IOException

nextGaussian

public static double nextGaussian(java.util.Random rand)

generatePoint

public static void generatePoint(Point p,
                 Rectangle mbr,
                 RandomShapeGenerator.DistributionType type,
                 java.util.Random rand)