CustomAggregateFunctionRegistry (RDF4J: Query parser - SPARQL 5.0.1 API)

java.lang.Object
- org.eclipse.rdf4j.common.lang.service.ServiceRegistry<String,AggregateFunctionFactory>
- - org.eclipse.rdf4j.query.parser.sparql.aggregate.CustomAggregateFunctionRegistry

```
@Experimental
public class CustomAggregateFunctionRegistry
extends org.eclipse.rdf4j.common.lang.service.ServiceRegistry<String,AggregateFunctionFactory>
```
ServiceRegistry implementation that stores available custom aggregate functions that can be used during query evaluation.

Author:

Tomas Kovachev [email protected]

Field Summary
- Fields inherited from class org.eclipse.rdf4j.common.lang.service.ServiceRegistry
  logger, services

Constructor Summary

Constructors
Constructor Description

CustomAggregateFunctionRegistry()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static CustomAggregateFunctionRegistry`	`getInstance()`
`protected String`	`getKey(AggregateFunctionFactory service)`

Methods inherited from class org.eclipse.rdf4j.common.lang.service.ServiceRegistry
add, get, getAll, getKeys, has, remove

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

- Constructor Detail
  - CustomAggregateFunctionRegistry
```
public CustomAggregateFunctionRegistry()
```
- Method Detail
  - getInstance
```
public static CustomAggregateFunctionRegistry getInstance()
```
  - getKey
```
protected String getKey(AggregateFunctionFactory service)
```
    Specified by:
    
    getKey in class org.eclipse.rdf4j.common.lang.service.ServiceRegistry<String,AggregateFunctionFactory>