org.wikidata.query.rdf.blazegraph.geo

Class GeoService

java.lang.Object

com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactoryBase

com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactory

org.wikidata.query.rdf.blazegraph.geo.GeoService

All Implemented Interfaces:

com.bigdata.rdf.sparql.ast.service.ServiceFactory

Direct Known Subclasses:

GeoAroundService, GeoBoxService

public abstract class GeoService
extends com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactory

Implements a service to do geospatial search. Base class for geospatial search wrappers.

Field Summary

Fields

Modifier and Type	Field and Description
static org.openrdf.model.impl.URIImpl	GLOBE_PARAM wikibase:globe parameter name.

Constructor Summary

Constructors

Constructor and Description
GeoService()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract com.bigdata.rdf.sparql.ast.JoinGroupNode	buildServiceNode(com.bigdata.rdf.sparql.ast.service.ServiceCallCreateParams params, com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams) Create service parameters for delegate service call.
com.bigdata.rdf.sparql.ast.service.BigdataServiceCall	create(com.bigdata.rdf.sparql.ast.service.ServiceCallCreateParams params, com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams)
protected com.bigdata.rdf.sparql.ast.TermNode	getGlobeNode(com.bigdata.rdf.model.BigdataValueFactory vf, com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams) Create globe node with appropriate value for coordSystem.
protected com.bigdata.rdf.sparql.ast.TermNode	getParam(com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams, org.openrdf.model.URI paramName) Get service parameter by name.
protected com.bigdata.rdf.sparql.ast.StatementPatternNode	getPatternNode(com.bigdata.rdf.sparql.ast.service.ServiceCallCreateParams params) Extract pattern node from parameters.
Set<com.bigdata.bop.IVariable<?>>	getRequiredBound(com.bigdata.rdf.sparql.ast.service.ServiceNode serviceNode)
com.bigdata.rdf.sparql.ast.service.IServiceOptions	getServiceOptions()
protected List<com.bigdata.rdf.sparql.ast.StatementPatternNode>	getStatementPatterns(com.bigdata.rdf.sparql.ast.service.ServiceNode serviceNode) Returns the statement patterns contained in the service node.
static void	register() Register the service so it is recognized by Blazegraph.

Methods inherited from class com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactory

create

Methods inherited from class com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactoryBase

getDesiredBound

Methods inherited from class java.lang.Object

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

Field Detail

GLOBE_PARAM

public static final org.openrdf.model.impl.URIImpl GLOBE_PARAM

wikibase:globe parameter name.

Constructor Detail

GeoService

public GeoService()

Method Detail

register

public static void register()

Register the service so it is recognized by Blazegraph.

getServiceOptions

public com.bigdata.rdf.sparql.ast.service.IServiceOptions getServiceOptions()

getParam

protected com.bigdata.rdf.sparql.ast.TermNode getParam(com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams,
                                           org.openrdf.model.URI paramName)

Get service parameter by name.

Parameters:

serviceParams -

paramName -

Returns:

buildServiceNode

protected abstract com.bigdata.rdf.sparql.ast.JoinGroupNode buildServiceNode(com.bigdata.rdf.sparql.ast.service.ServiceCallCreateParams params,
                                                        com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams)

Create service parameters for delegate service call.

Parameters:

params -

serviceParams -

Returns:

getGlobeNode

protected com.bigdata.rdf.sparql.ast.TermNode getGlobeNode(com.bigdata.rdf.model.BigdataValueFactory vf,
                                               com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams)

Create globe node with appropriate value for coordSystem.

Parameters:

vf -

serviceParams -

Returns:

getPatternNode

protected com.bigdata.rdf.sparql.ast.StatementPatternNode getPatternNode(com.bigdata.rdf.sparql.ast.service.ServiceCallCreateParams params)

Extract pattern node from parameters. Pattern node looks like: ?place wdt:P625 ?location . Both variables would be bound by the service.

Parameters:

params -

Returns:

create

public com.bigdata.rdf.sparql.ast.service.BigdataServiceCall create(com.bigdata.rdf.sparql.ast.service.ServiceCallCreateParams params,
                                                           com.bigdata.rdf.sparql.ast.eval.ServiceParams serviceParams)

Specified by:

create in class com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactory

getStatementPatterns

protected List<com.bigdata.rdf.sparql.ast.StatementPatternNode> getStatementPatterns(com.bigdata.rdf.sparql.ast.service.ServiceNode serviceNode)

Returns the statement patterns contained in the service node.

Parameters:

serviceNode -

Returns:

getRequiredBound

public Set<com.bigdata.bop.IVariable<?>> getRequiredBound(com.bigdata.rdf.sparql.ast.service.ServiceNode serviceNode)

Specified by:

getRequiredBound in interface com.bigdata.rdf.sparql.ast.service.ServiceFactory

Overrides:

getRequiredBound in class com.bigdata.rdf.sparql.ast.eval.AbstractServiceFactoryBase