SPARQL utils

The sparql module contains several functions that wrap commonly used SPARQL queries in Python code.

eltk.utils.sparql.getABoxTriples(graph)

Return all triples in a graph’

Parameter:graph (rdflib.graph.Graph) – the graph to search Return type:list

eltk.utils.sparql.getBaseClasses(graph, cls_uri)

Parameters:

• graph (rdflib.Graph.Graph) – the relevant graph to process
• cls_uri (rdflib.URIRef.URIRef) – the URI of the particular class

Return type:

list

eltk.utils.sparql.getComments(graph, uri_string)

Return all comments associated with some URI

Parameters:

• graph (rdflib.Graph.Graph) – the graph to search
• uri_string (str) – a URI of some concept

Return type:

list

eltk.utils.sparql.getIndividuals(graph)

getIndividuals returns a dictionary where keys are URIRefs of individuals and values are lists of types (ie OWL class URIs)

Parameter:graph (rdflib.graph.Graph) – the relevant graph to process Returns:(keys) individual URIs, (values) lists of types, OWL class URIs Return type:dict

eltk.utils.sparql.getOWLClasses(graph)

Return all OWL Classes in a graph’

Parameter:graph (rdflib.graph.Graph) – the graph to search Return type:list

eltk.utils.sparql.getOWLDatatypeProperties(graph)

Return all OWL DataProperties in a graph’

Parameter:graph (rdflib.graph.Graph) – the graph to search Return type:list

eltk.utils.sparql.getOWLObjectProperties(graph)

Return all OWL ObjectProperties in a graph’

Parameter:graph (rdflib.graph.Graph) – the graph to search Return type:list

eltk.utils.sparql.getSubClasses(graph, cls_uri)

Given an rdflib.graph.Graph and a URIRef of some OWL class, return a list of subclasses

Parameters:

• graph (rdflib.graph.Graph) – the graph to search
• cls_uri (rdflib.URIRef.URIRef) –

Return type:

list

eltk.utils.sparql.getUnitBasedOnForm(graph, form)

Return linguistic units accordings to a particular form

Parameters:

• graph (rdflib.graph.Graph) – the relevant graph
• form (str) – the form to search for

Return type:

list

eltk.utils.sparql.sparqlQuery(sparql_string, context)

sparqlQuery is a wrapper function for making queries over specific contexts within the store.

Parameters:

• sparql_string (str) – Well formed SPARQL query
• context (rdflib.Graph.Graph) – A graph

Returns:

A list of tuples containing the results

Return type:

list