org.topbraid.spin.arq

Class Aggregations

java.lang.Object

org.topbraid.spin.arq.Aggregations

public class Aggregations
extends Object

Manages the registered SPARQL aggregations (such as SUM). These are loaded from the sp system ontology.

Author:

Holger Knublauch

Constructor Summary

Constructors

Constructor and Description
Aggregations()

Method Summary

Modifier and Type	Method and Description
static String	getName(org.apache.jena.rdf.model.Resource aggType) If registered, returns the display name of a given aggregation type.
static org.apache.jena.rdf.model.Resource	getType(String name) If registered, returns the aggregation Resource for a given display name.
static void	register(org.apache.jena.rdf.model.Resource aggType, String name) Programatically adds a new aggregation type.

Methods inherited from class java.lang.Object

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

Constructor Detail

Aggregations

public Aggregations()

Method Detail

getName

public static String getName(org.apache.jena.rdf.model.Resource aggType)

If registered, returns the display name of a given aggregation type.

Parameters:

aggType - the aggregation type, e.g. sp:Sum

Returns:

the name (e.g., "SUM") or null if not registered

getType

public static org.apache.jena.rdf.model.Resource getType(String name)

If registered, returns the aggregation Resource for a given display name.

Parameters:

name - the name (e.g., "SUM")

Returns:

the type or null if not registered

register

public static void register(org.apache.jena.rdf.model.Resource aggType,
                            String name)

Programatically adds a new aggregation type. This is usually only populated from the sp system ontology, but API users may want to bypass (and extend) this mechanism.

Parameters:

aggType - the type to register

name - the display name