org.apache.calcite.benchmarks

Class AbstractRelNodeGetRelTypeNameBenchmark.ClassNameState

java.lang.Object

org.apache.calcite.benchmarks.AbstractRelNodeGetRelTypeNameBenchmark.ClassNameState

Enclosing class:

AbstractRelNodeGetRelTypeNameBenchmark

public static class AbstractRelNodeGetRelTypeNameBenchmark.ClassNameState
extends Object

A state holding the full class names of all built-in implementors of the RelNode interface.

Field Summary

Fields

Modifier and Type	Field and Description
private String[]	fullNames
private Random	r
private long	seed

Constructor Summary

Constructors

Constructor and Description
ClassNameState()

Method Summary

Modifier and Type	Method and Description
String	nextName() Returns a pseudo-random class name that corresponds to an implementor of the RelNode interface.
void	setupRandom() Sets up the random number generator at the beginning of each iteration.

Methods inherited from class java.lang.Object

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

Field Detail

fullNames

private final String[] fullNames

seed

private long seed

r

private Random r

Constructor Detail

ClassNameState

public ClassNameState()

Method Detail

setupRandom

public void setupRandom()

Sets up the random number generator at the beginning of each iteration.

To have relatively comparable results the generator should always use the same seed for the whole duration of the benchmark.

nextName

public String nextName()

Returns a pseudo-random class name that corresponds to an implementor of the RelNode interface.