telicent-ies-tool

A library for working with the IES data standard.

IES is a UK Government data exchange standard. It is a 4D ontology specified as an RDF Schema. The purpose of telicent-ies-tool is to make it easier for users to create compliant IES data.

Dependencies

Python >= 3.8

Install

pip install git+https://github.com/telicent-oss/ies-tool.git

Usage

To import, use:

from ies_tool.ies_tool import IESTool

To instantiate the tool:

tool = IESTool(mode="rdflib")

Namespaces

To bind a namespace uri stub to a prefix, we need to 'register' that namesapce. This needs to be done for all namespaces apart from: xsd, dc, rdf, rdfs, owl and ies.

from ies_tool.ies_tool import IESTool, NamingScheme

tool = IESTool(mode="rdflib")
data_ns = NamingScheme(tool=tool, uri="http://example.com/rdf/testdata#")
data_ns.add_name("data", name_uri="http://example.com/rdf/testdata#__NAME")
tool.add_prefix("data", "http://example.com/rdf/testdata#")

As a default http://example.com/rdf/testdata# is used as a data uri stub. This can be changed:

tool.set_uri_stub('http://domain/rdf/stub#')

Creating a Person

To create a person we need to instantiate a person object/class first. We can pass in several parameters, as shown below, as well as specify a unique uri or class, if needed.

my_person = tool.create_person(
    given_name=given_name,
    family_name=family_name,
    dob=date_of_birth,
    pob=place_of_birth
)

We can then add additional information associated with the person using one of the available methods such as add_identifier(), add_state(), in_location(), works_for() etc.

Adding an identifier to a person

my_person.add_identifier(person_id)

Connecting nodes and edges

If no methods are available, we can create nodes using the instantiate() method and connect this node to an existing node using the add_to_graph() method.

tool.add_to_graph(
    subjec=my_person.uri,
    predicate=f'{tool.ies_uri_stub}hasCharacteristic',
    obj=characteristic_uri
)

Labelling nodes in Telicent Graph

Primary names appear as node labels in Telicent Graph. To add a primary name to the person we have created earlier we can use the "http://telicent.io/ontology/primaryName" uri as a predicate and primary name as an object.

tool.add_literal(
    subject=my_person.uri,
    predicate="http://telicent.io/ontology/primaryName",
    obj="my primary name string"
)

To clear the graph:

tool.clear_graph()

Saving/creating RDF

In a telicent-lib mapping function

mapped_record = tool.graph.serialize(format="turtle") 
return mapped_record

Saving RDF locally

tool.save_rdf("path/to/my/file.ttl",format="ttl")