ReadonlydatasetReadonlyidShort identifier (e.g., "sparql", "cypher", "holonic").
ReadonlynameHuman-readable name (e.g., "SPARQL Endpoint").
Expand the neighborhood of a node at the given depth. Returns a UGM containing the discovered subgraph.
Get full properties for a specific node. Used for lazy-loading detailed properties.
Get the schema of the data source.
Project the top-level holarchy to a flat LPG (R5.3). Each holon becomes a node; each portal becomes an edge.
NOTE: the in-memory dataset has no query engine; the query string is currently ignored and the top-level holarchy projection is returned. Callers that need real query semantics should use a backend-connected adapter. Logged (not thrown) so existing view wiring keeps working while making the limitation observable.
Interface that all data source adapters implement.