Package org.apache.druid.segment.generator

Enum GeneratorColumnSchema.ValueDistribution

java.lang.Object

java.lang.Enum<GeneratorColumnSchema.ValueDistribution>

org.apache.druid.segment.generator.GeneratorColumnSchema.ValueDistribution

All Implemented Interfaces:

Serializable, Comparable<GeneratorColumnSchema.ValueDistribution>

Enclosing class:

GeneratorColumnSchema

public static enum GeneratorColumnSchema.ValueDistribution
extends Enum<GeneratorColumnSchema.ValueDistribution>

SEQUENTIAL: Generate integer or enumerated values in sequence. Not random. DISCRETE_UNIFORM: Discrete uniform distribution, generates integers or enumerated values. ROUNDED_NORMAL: Discrete distribution that rounds sample values from an underlying normal distribution ZIPF: Discrete Zipf distribution. Lower numbers have higher probability. Can also generate Zipf distribution from a list of enumerated values. LAZY_ZIPF: ZIPF but lazy evaluated for large cardinalities LAZY_DISCRETE_UNIFORM: DISCRETE_UNIFORM but lazy evaluated for large cardinalities ENUMERATED: Discrete distribution, generated from lists of values and associated probabilities. NORMAL: Continuous normal distribution. UNIFORM: Continuous uniform distribution.

Enum Constant Summary

Enum Constants

Enum Constant	Description
DISCRETE_UNIFORM
ENUMERATED
LAZY_DISCRETE_UNIFORM
LAZY_ZIPF
NORMAL
ROUNDED_NORMAL
SEQUENTIAL
UNIFORM
ZIPF

Method Summary

Modifier and Type	Method	Description
static GeneratorColumnSchema.ValueDistribution	valueOf(String name)	Returns the enum constant of this type with the specified name.
static GeneratorColumnSchema.ValueDistribution[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SEQUENTIAL

public static final GeneratorColumnSchema.ValueDistribution SEQUENTIAL

DISCRETE_UNIFORM

public static final GeneratorColumnSchema.ValueDistribution DISCRETE_UNIFORM

ROUNDED_NORMAL

public static final GeneratorColumnSchema.ValueDistribution ROUNDED_NORMAL

ZIPF

public static final GeneratorColumnSchema.ValueDistribution ZIPF

ENUMERATED

public static final GeneratorColumnSchema.ValueDistribution ENUMERATED

LAZY_ZIPF

public static final GeneratorColumnSchema.ValueDistribution LAZY_ZIPF

LAZY_DISCRETE_UNIFORM

public static final GeneratorColumnSchema.ValueDistribution LAZY_DISCRETE_UNIFORM

UNIFORM

public static final GeneratorColumnSchema.ValueDistribution UNIFORM

NORMAL

public static final GeneratorColumnSchema.ValueDistribution NORMAL

Method Detail

values

public static GeneratorColumnSchema.ValueDistribution[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (GeneratorColumnSchema.ValueDistribution c : GeneratorColumnSchema.ValueDistribution.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static GeneratorColumnSchema.ValueDistribution valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null