Class DelegateFederatedServiceResolver

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.federation.AbstractFederatedServiceResolver

org.eclipse.rdf4j.federated.evaluation.DelegateFederatedServiceResolver

All Implemented Interfaces:

FederatedServiceResolver

public class DelegateFederatedServiceResolver
extends AbstractFederatedServiceResolver

A FederatedServiceResolver which redirects SERVICE requests to the federation member (if the SERVICE IRI correspond to a member) or to the provided delegate.

Author:

as

Field Summary

Fields inherited from class AbstractFederatedServiceResolver

endpointToService

Constructor Summary

Constructors

Constructor	Description
DelegateFederatedServiceResolver(EndpointManager endpointManager)

Method Summary

Modifier and Type	Method	Description
protected FederatedService	createService(String serviceUrl)	Create a new FederatedService for the given serviceUrl.
FederatedService	getService(String serviceUrl)	Retrieve the FederatedService registered for serviceUrl.
void	initialize()
protected boolean	isFedXEndpoint(String serviceUrl)
void	setDelegate(FederatedServiceResolver federatedServiceResolver)
void	shutDown()

Methods inherited from class AbstractFederatedServiceResolver

hasService, registerService, unregisterAll, unregisterService

Methods inherited from class Object

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

Constructor Details

DelegateFederatedServiceResolver

public DelegateFederatedServiceResolver(EndpointManager endpointManager)

Method Details

initialize

public void initialize()

shutDown

public void shutDown()

Overrides:

shutDown in class AbstractFederatedServiceResolver

setDelegate

public void setDelegate(FederatedServiceResolver federatedServiceResolver)

getService

public FederatedService getService(String serviceUrl)
                            throws QueryEvaluationException

Description copied from class: AbstractFederatedServiceResolver

Retrieve the FederatedService registered for serviceUrl. If there is no service registered for serviceUrl, a new FederatedService is created and registered.

Specified by:

getService in interface FederatedServiceResolver

Overrides:

getService in class AbstractFederatedServiceResolver

Parameters:

serviceUrl - locator for the federation service

Returns:

the FederatedService, created fresh if necessary

Throws:

QueryEvaluationException

createService

protected FederatedService createService(String serviceUrl)
                                  throws QueryEvaluationException

Description copied from class: AbstractFederatedServiceResolver

Create a new FederatedService for the given serviceUrl. This method is invoked, if no FederatedService has been created yet for the serviceUrl.

Specified by:

createService in class AbstractFederatedServiceResolver

Parameters:

serviceUrl - the service IRI

Returns:

a non-null FederatedService

Throws:

QueryEvaluationException

isFedXEndpoint

protected boolean isFedXEndpoint(String serviceUrl)