Package org.eclipse.epsilon.emg.random

Class EmgRandomGenerator

java.lang.Object
org.eclipse.epsilon.emg.random.EmgRandomGenerator
All Implemented Interfaces:
org.apache.commons.math3.random.RandomGenerator, IEmgRandomGenerator<IEmgRandomGenerator.DefaultCharacterSet>
public class EmgRandomGenerator extends Object implements IEmgRandomGenerator<IEmgRandomGenerator.DefaultCharacterSet>
The simplest implementation of the RandomAttributeGenerator interface. All attributes are generated as strings. It is the responsibility of the calling class/method to do the appropriate conversion. This classes uses the Apache Commons Math RandomDataGenerator.

  • Nested Class Summary

    Nested classes/interfaces inherited from interface org.eclipse.epsilon.emg.random.IEmgRandomGenerator

    IEmgRandomGenerator.DefaultCharacterSet, IEmgRandomGenerator.Distribution

  • Constructor Summary

    Constructors
    Constructor
    Description
    EmgRandomGenerator(IEolContext context)
    Instantiates a new emg random generator.
    EmgRandomGenerator(IEolContext context, long seed)
    Instantiates a new emg random generator.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.apache.commons.math3.random.RandomDataGenerator
    getGenerator()
     
    List<Integer>
    getIndex(String listID, int size, Map<String,List<Integer>> sampleList)
     
    protected List<String>
    getValuesFromList(String list)
    Gets the values from list.
    List<Integer>
    nextAddTo(int n, int m)
    Returns an array of n integers that addvar to m.
    double
    nextBinomialValue(int numberOfTrials, double probabilityOfSuccess)
    Generates a random value from the Binomial Distribution.
    boolean
    nextBoolean()
     
    void
    nextBytes(byte[] bytes)
     
    String
    nextCamelCaseString(int length, int minWordLength)
    Generates a random string of the given length using the specified character set formatted in CameCase format.
    String
    nextCapitalisedString(String charSet, int length)
    Next capitalised string.
    double
    nextDouble()
     
    double
    nextDouble(double upper)
    Returns a pseudorandom, uniformly distributed double value between 0 (inclusive) and the specified value (exclusive), drawn from this random attribute generator's sequence.
    double
    nextDouble(double lower, double upper)
    Returns a pseudorandom, uniformly distributed double value between lower and upper (endpoints included), drawn from this random attribute generator's sequence.
    double
    nextExponentialValue(double mean)
    Generates a random value from the Exponential Distribution.
    float
    nextFloat()
     
    Object
    nextFromCollection(Collection<?> c)
    Returns a single object selected randomly from the Collection c using a uniform distribution.
    Object
    nextFromList(String listID)
    The listID must be the name of a parameter in the launch configuration.
    Object
    nextFromListAsSample(String listID)
    The listID must be the name of a parameter in the launch configuration.
    double
    nextGaussian()
     
    String
    nextHttpURI(boolean addPort, boolean addPath, boolean addQuery, boolean addFragment)
    Generates a random URI that complies to: http:[//host[:port]][/]path[?query][#fragment] The scheme is The host is generated from a random string and uses a top-level domain.
    int
    nextInt()
     
    int
    nextInt(int n)
     
    int
    nextInteger(int upper)
    Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random attribute generator's sequence.
    int
    nextInteger(int lower, int upper)
    Returns a pseudorandom, uniformly distributed int value between lower and upper (endpoints included), drawn from this random attribute generator's sequence.
    long
    nextLong()
     
    long
    nextLong(long upper)
    Returns a pseudorandom, uniformly distributed long value between 0 (inclusive) and the specified value (exclusive), drawn from this random attribute generator's sequence.
    long
    nextLong(long lower, long upper)
    Returns a pseudorandom, uniformly distributed long value between lower and upper (endpoints included), drawn from this random attribute generator's sequence.
    List<Object>
    nextSample(String listID, int k)
    The listID must be the name of a parameter in the launch configuration.
    List<Object>
    nextSample(Collection<?> c, int k)
    Returns an array of k objects selected randomly from the Collection c using a uniform distribution.
    String
    nextString(String charSet, int length)
    Generates a random string of the given length using the specified character set.
    String
    nextURI()
    Generates a random URI.
    String
    nextURI(boolean addPort, boolean addPath, boolean addQuery, boolean addFragment)
    Generates a random URI that complies to: scheme:[//[user:password@]host[:port]][/]path[?query][#fragment] The scheme is randomly selected from: http, ssh and ftp.
    double
    nextValue()
    Returns the next pseudorandom, value from this random attribute generator's sequence.
    void
    setSeed(int seed)
     
    void
    setSeed(int[] seed)
     
    void
    setSeed(long seed)
     
    void
    useBinomialDistribution(int numberOfTrials, double probabilityOfSuccess)
    Use binomial distribution.
    void
    useExponentialDistribution(double mean)
    Use exponential distribution.

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface org.eclipse.epsilon.emg.random.IEmgRandomGenerator

    nextDobule, nextDobule