Class ActorExtractLinksSolidTypeIndex

constructor

• new ActorExtractLinksSolidTypeIndex(
      args: IActorExtractLinksSolidTypeIndexArgs,
  ): ActorExtractLinksSolidTypeIndex

• Parameters

  • args: IActorExtractLinksSolidTypeIndexArgs

  Returns ActorExtractLinksSolidTypeIndex

ReadonlymediatorDereferenceRdf

ReadonlyqueryEngine

Static ReadonlyRDF_TYPE

dereferenceTypeIndex

• dereferenceTypeIndex(
      typeIndex: string,
      context: IActionContext,
  ): Promise<Record<string, ILink[]>>

• Determine all entries within the given type index.

  Parameters

  • typeIndex: string

    The URL of a type index.
  • context: IActionContext

    The context.

  Returns Promise<Record<string, ILink[]>>

  typeLinks A record mapping class URLs to an array of links.

extractTypeIndexLinks

• extractTypeIndexLinks(metadata: Stream): Promise<Set<string>>

• Extract links to type index from the metadata stream.

  Parameters

  • metadata: Stream

    A metadata quad stream.

  Returns Promise<Set<string>>

fetchPredicateDomains

• fetchPredicateDomains(predicateValue: string): Promise<string[]>

• To fetch the rdf type from the vocabulary if the type is not already present.

  Parameters

  • predicateValue: string

    Predicate value from the query.

  Returns Promise<string[]>

  predicateTypeLinks A record mapping predicate URIs to it's domain.

getLinksMatchingQuery

• getLinksMatchingQuery(
      typeLinks: Record<string, ILink[]>,
      query: Operation,
      pattern: Pattern,
  ): Promise<ILink[]>

• Determine all links that match with the current query pattern.

  Parameters

  • typeLinks: Record<string, ILink[]>

    The type index links.
  • query: Operation

    The original query that is being executed.
  • pattern: Pattern

    The current pattern that is being evaluated and traversed in.

  Returns Promise<ILink[]>

linkPredicateDomains

• linkPredicateDomains(
      predicateSubjects: Record<string, Term>,
      typeSubjects: Record<string, Term[]>,
  ): Promise<void>

• To fetch the domain of the predicate.

  Parameters

  • predicateSubjects: Record<string, Term>

    A dictionary of predicate and its subjects from the query.
  • typeSubjects: Record<string, Term[]>

    A dictionary of class type and its subjects from the query.

  Returns Promise<void>

run

• run(action: IActionExtractLinks): Promise<IActorExtractLinksOutput>

• Run the given action on this actor.

  In most cases, this method should not be called directly. Instead, #runObservable should be called.

  Parameters

  • action: IActionExtractLinks

    The action to run.

  Returns Promise<IActorExtractLinksOutput>

  A promise that resolves to the run result.

test

• test(action: IActionExtractLinks): Promise<TestResult<IActorTest>>

• Check if this actor can run the given action, without actually running it.

  Parameters

  • action: IActionExtractLinks

    The action to test.

  Returns Promise<TestResult<IActorTest>>

  A promise that resolves to the test result.