org.openrdf.query.algebra.evaluation.federation

Class FederatedServiceResolverImpl

java.lang.Object

org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolverBase

org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolverImpl

All Implemented Interfaces:

HttpClientDependent, SesameClientDependent, FederatedServiceResolver

public class FederatedServiceResolverImpl
extends FederatedServiceResolverBase
implements FederatedServiceResolver, HttpClientDependent, SesameClientDependent

The FederatedServiceResolverImpl is used to manage a set of FederatedService instances, which are used to evaluate SERVICE expressions for particular service Urls.

Lookup can be done via the serviceUrl using the method FederatedServiceResolverBase.getService(String). If there is no service for the specified url, a SPARQLFederatedService is created and registered for future use.

Author:

Andreas Schwarte, James Leigh

Field Summary

Fields inherited from class org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolverBase

endpointToService

Constructor Summary

Constructors

Constructor and Description
FederatedServiceResolverImpl()

Method Summary

Modifier and Type	Method and Description
protected FederatedService	createService(String serviceUrl) Create a new FederatedService for the given serviceUrl.
org.apache.http.client.HttpClient	getHttpClient()
SesameClient	getSesameClient()
void	setHttpClient(org.apache.http.client.HttpClient httpClient)
void	setSesameClient(SesameClient client)
void	shutDown()

Methods inherited from class org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolverBase

getService, registerService, unregisterAll, unregisterService

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.query.algebra.evaluation.federation.FederatedServiceResolver

getService

Constructor Detail

FederatedServiceResolverImpl

public FederatedServiceResolverImpl()

Method Detail

getSesameClient

public SesameClient getSesameClient()

Specified by:

getSesameClient in interface SesameClientDependent

setSesameClient

public void setSesameClient(SesameClient client)

Specified by:

setSesameClient in interface SesameClientDependent

getHttpClient

public org.apache.http.client.HttpClient getHttpClient()

Specified by:

getHttpClient in interface HttpClientDependent

setHttpClient

public void setHttpClient(org.apache.http.client.HttpClient httpClient)

Specified by:

setHttpClient in interface HttpClientDependent

createService

protected FederatedService createService(String serviceUrl)
                                  throws QueryEvaluationException

Description copied from class: FederatedServiceResolverBase

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 FederatedServiceResolverBase

Parameters:

serviceUrl - the service IRI

Returns:

a non-null FederatedService

Throws:

QueryEvaluationException

shutDown

public void shutDown()

Overrides:

shutDown in class FederatedServiceResolverBase