org.wikidata.query.rdf.blazegraph.geo

Class GeoBoxService

java.lang.Object

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

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

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

org.wikidata.query.rdf.blazegraph.geo.GeoBoxService

All Implemented Interfaces:

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

public class GeoBoxService
extends GeoService

Implements a service to do geospatial search. This class searches for items around certain point. Example: SELECT * WHERE { wd:Q90 wdt:P625 ?parisLoc . SERVICE wikibase:box { ?place wdt:P625 ?location . bd:serviceParam wikibase:cornerSouthWest "Point(48.0 2.0)"^^ogc:wktLiteral . bd:serviceParam wikibase:cornerNorthEast "Point(49.0 3.0)"^^ogc:wktLiteral . } } Or: SELECT * WHERE { wd:Q90 wdt:P625 ?parisLoc . SERVICE wikibase:box { ?place wdt:P625 ?location . bd:serviceParam wikibase:cornerEast "Point(49.0 3.0)"^^ogc:wktLiteral . bd:serviceParam wikibase:cornerWest "Point(48.0 2.0)"^^ogc:wktLiteral . } } The latter form automatically assigns point to the north to be NE corner and point to the south to be SW corner.

Field Summary

Fields

Modifier and Type	Field and Description
static org.openrdf.model.impl.URIImpl	EAST_PARAM wikibase:cornerEast parameter name.
static org.openrdf.model.impl.URIImpl	NE_PARAM wikibase:cornerNorthEast parameter name.
static org.openrdf.model.URI	SERVICE_KEY The URI service key.
static org.openrdf.model.impl.URIImpl	SW_PARAM wikibase:cornerSouthWest parameter name.
static String	VAR_ANNOTATION Annotation for node.
static org.openrdf.model.impl.URIImpl	WEST_PARAM wikibase:cornerWest parameter name.
static org.openrdf.model.impl.URIImpl	WRAP_PARAM Service param to specify we need coordinate wrapping.

Fields inherited from class org.wikidata.query.rdf.blazegraph.geo.GeoService

GLOBE_PARAM

Constructor Summary

Constructors

Constructor and Description
GeoBoxService()

Method Summary

Modifier and Type	Method and Description
protected 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)

Methods inherited from class org.wikidata.query.rdf.blazegraph.geo.GeoService

getGlobeNode, getParam, getPatternNode, getRequiredBound, getServiceOptions, getStatementPatterns, register

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

SERVICE_KEY

public static final org.openrdf.model.URI SERVICE_KEY

The URI service key.

NE_PARAM

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

wikibase:cornerNorthEast parameter name.

SW_PARAM

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

wikibase:cornerSouthWest parameter name.

EAST_PARAM

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

wikibase:cornerEast parameter name.

WEST_PARAM

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

wikibase:cornerWest parameter name.

VAR_ANNOTATION

public static final String VAR_ANNOTATION

Annotation for node. Will contain the replacement variable node.

WRAP_PARAM

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

Service param to specify we need coordinate wrapping.

Constructor Detail

GeoBoxService

public GeoBoxService()

Method Detail

buildServiceNode

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

Description copied from class: GeoService

Create service parameters for delegate service call.

Specified by:

buildServiceNode in class GeoService

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)

Overrides:

create in class GeoService