# Package org.eclipse.rdf4j.sail.inferencer.fc

Forward-chaining inferencers, implemented as `StackableSail`s.

- Class Summary
  Class | Description
  --- | ---
  AbstractForwardChainingInferencer |
  AbstractForwardChainingInferencerConnection |
  CustomGraphQueryInferencer | A forward-chaining inferencer that infers new statements using a SPARQL graph query.
  DedupingInferencer | An inferencer may infer the same statement from two different statements.
  DedupingInferencerConnection |
  DirectTypeHierarchyInferencer | A forward-chaining inferencer that infers the direct-type hierarchy relations `sesame:directSubClassOf`, `sesame:directSubPropertyOf` and `sesame:directType`.
  ForwardChainingRDFSInferencer | Deprecated. since 2.5.
  SchemaCachingRDFSInferencer | The SchemaCachingRDFSInferencer is an RDFS reasoner that caches all schema (TBox) statements and calculates an inference map to quickly determine inferred statements.
  SchemaCachingRDFSInferencerConnection |