OntologyService

What it is

• A small service that implements IOntologyService and delegates Named Entity Recognition (NER) to an injected IOntologyNERPort adaptor using a provided ontology string.
• Returns results as an rdflib.Graph.

Public API

• class OntologyService(IOntologyService)
  • __init__(ner_adaptor: IOntologyNERPort, ontology_str: str)
    • Stores the NER adaptor and the ontology serialized as a string.
  • named_entity_recognition(input: str) -> rdflib.Graph
    • Delegates to ner_adaptor.named_entity_recognition(input, ontology_str) and returns the resulting RDF graph.

Configuration/Dependencies

• Depends on:
  • naas_abi_core.services.ontology.OntologyPorts:
    • IOntologyService (implemented by this class)
    • IOntologyNERPort (required adaptor interface)
  • rdflib.Graph (return type)

Usage

from rdflib import Graph
from naas_abi_core.services.ontology.OntologyService import OntologyService
 
# Minimal stub adaptor matching the expected port method signature
class DummyNERAdaptor:
    def named_entity_recognition(self, text: str, ontology_str: str) -> Graph:
        return Graph()
 
service = OntologyService(
    ner_adaptor=DummyNERAdaptor(),
    ontology_str="...ontology content..."
)
 
g = service.named_entity_recognition("Find entities in this text.")
print(type(g))  # <class 'rdflib.graph.Graph'>

Caveats

• named_entity_recognition behavior is entirely determined by the injected IOntologyNERPort implementation.
• ontology_str is passed through as-is; no validation or parsing is performed here.