RandomFunction (Apache Calcite API)

java.lang.Object
- org.apache.calcite.runtime.RandomFunction

```
public class RandomFunction
extends java.lang.Object
```
Function object for RAND and RAND_INTEGER, with and without seed.

Field Summary

Fields
Modifier and Type Field Description

private java.util.Random random

Constructor Summary

Constructors
Constructor Description

RandomFunction()
Creates a RandomFunction.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`rand()`	Implements the `RAND()` SQL function.
`int`	`randInteger(int bound)`	Implements the `RAND_INTEGER(bound)` SQL function.
`int`	`randIntegerSeed(int seed, int bound)`	Implements the `RAND_INTEGER(seed, bound)` SQL function.
`double`	`randSeed(int seed)`	Implements the `RAND(seed)` SQL function.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - random
```
private java.util.Random random
```
- Constructor Detail
  - RandomFunction
```
public RandomFunction()
```
    Creates a RandomFunction.
    Marked deterministic so that the code generator instantiates one once per query, not once per row.
- Method Detail
  - rand
```
public double rand()
```
    Implements the RAND() SQL function.
  - randSeed
```
public double randSeed(int seed)
```
    Implements the RAND(seed) SQL function.
  - randInteger
```
public int randInteger(int bound)
```
    Implements the RAND_INTEGER(bound) SQL function.
  - randIntegerSeed
```
public int randIntegerSeed(int seed,
                           int bound)
```
    Implements the RAND_INTEGER(seed, bound) SQL function.