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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.