QueryableRdfSource | @m-ld/m-ld - v0.10.0

Rollup interface for an RDF source that can answer SPARQL queries

Type parameters

Q: BaseQuad

Hierarchy

Source<Q>
QueryableRdf<Q>
CountableRdf
- QueryableRdfSource
  - MeldReadState

Index

Methods

Methods

countQuads

countQuads(...args: Parameters<Source["match"]>): Promise<number>

Inherited from CountableRdf.countQuads

Parameters
- Rest ...args: Parameters<Source["match"]>
Returns Promise<number>

match

match(subject?: Term | null, predicate?: Term | null, object?: Term | null, graph?: Term | null): Stream<Q>

Inherited from QueryableRdfSource.match

Returns a stream that processes all quads matching the pattern.

Parameters
- Optional subject: Term | null
  
  The optional subject.
- Optional predicate: Term | null
  
  The optional predicate.
- Optional object: Term | null
  
  The optional object.
- Optional graph: Term | null
  
  The optional graph.
Returns Stream<Q>

The resulting quad stream.

query

query(query: Construct): Stream<Q>
query(query: Describe): Stream<Q>
query(query: Project): BaseStream<Binding>
query(query: Distinct): BaseStream<Binding>

Inherited from QueryableRdf.query

Parameters
- query: Construct
Returns Stream<Q>
Inherited from QueryableRdf.query

Parameters
- query: Describe
Returns Stream<Q>
Inherited from QueryableRdf.query

Parameters
- query: Project
Returns BaseStream<Binding>
Inherited from QueryableRdf.query

Parameters
- query: Distinct
Returns BaseStream<Binding>

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