Rand (Eclipse RDF4J 4.3.2)

java.lang.Object
- org.eclipse.rdf4j.query.algebra.evaluation.function.numeric.Rand

All Implemented Interfaces:

Function
```
public class Rand
extends Object
implements Function
```
The SPARQL built-in Function RAND, as defined in SPARQL Query Language for RDF

Author:

Jeen Broekstra

Constructor Summary

Constructors
Constructor Description

Rand()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Literal`	`evaluate(ValueFactory valueFactory, Value... args)`	Evaluate the function over the supplied input arguments, using the supplied `ValueFactory` to produce the result.
`String`	`getURI()`
`boolean`	`mustReturnDifferentResult()`	UUID() and STRUUID() must return a different result for each invocation.

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

Methods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.function.Function
evaluate

- Constructor Detail
  - Rand
```
public Rand()
```
- Method Detail
  - getURI
```
public String getURI()
```
    Specified by:
    
    getURI in interface Function
  - evaluate
```
public Literal evaluate(ValueFactory valueFactory,
                        Value... args)
                 throws ValueExprEvaluationException
```
    Description copied from interface: Function
    
    Evaluate the function over the supplied input arguments, using the supplied ValueFactory to produce the result.
    
    Specified by:
    
    evaluate in interface Function
    
    Parameters:
    
    valueFactory - a ValueFactory to use for producing the function result.
    
    args - the function input arguments.
    
    Returns:
    
    the function result value.
    
    Throws:
    
    ValueExprEvaluationException
  - mustReturnDifferentResult
```
public boolean mustReturnDifferentResult()
```
    Description copied from interface: Function
    
    UUID() and STRUUID() must return a different result for each invocation.
    
    Specified by:
    
    mustReturnDifferentResult in interface Function
    
    Returns:
    
    if each invocation must return a different result.