Big updates

[ashleysommer]

Compatibility with Oxigraph stores.

• PySHACL can now validate a graph that is loaded into a PyOxigraph pyoxigraph.Store instance.

• New DataGraph graph abstraction layer that wraps RDFLib Graph/Dataset and, when installed, pyoxigraph.Store.

• Validation and SHACL Rules expansion can use an Oxigraph-backed data graph for faster SPARQL execution.

• Install with the new optional extra: pip install pyshacl[oxigraph].

• Pass a pyoxigraph.Store directly to validate() or shacl_rules().
  SHACL Functions and SHACL-JS Functions now register and execute on both RDFLib and Oxigraph SPARQL engines.

• SPARQL constraints can invoke SHACL Functions as SPARQL extension functions when using an Oxigraph-backed data graph.

• Python 3.13 support in the test matrix.

  • pyduktape2 dependency is now version-split for Python 3.13+.

• Dropped rdflib.ConjunctiveGraph support throughout the codebase.

  • ConjunctiveGraph has been deprecatd in RDFLib for a long time, it will be gone in RDFLib 8. Removing it now from PySHACL to prevent compatibility issues later.
  • Multigraph inputs must be an rdflib.Dataset; bare rdflib.Graph remain supported for single-graph use.

• Adapted to RDFLib 7.3+ API changes: default_context has been replaced with default_graph, and contexts() replaced with graphs().

  • Resolves pySHACL RDFLib 7.3+ Compatibility: Deprecation of default_context and Dataset.identifier #316

• Updated minimum dependency versions:

  • rdflib[html]>=7.3.0,<8.0
  • owlrl>=7.6.1,<8

• validate_each() now returns a dict keyed by input index (int) instead of by source identifier.

• Internal validation and rules expansion now operate on the DataGraph wrapper rather than raw RDFLib graph objects.

• SPARQL prefix resolution for shapes graphs stored in a Dataset now reads sh:declare blocks from the default graph.

• DASH conformance checking now enumerates named graphs with Dataset.graphs() instead of the deprecated contexts() API.

• OWL owl:imports over HTTP no longer leaves closed HTTPResponse objects that trigger finalizer errors during garbage collection.

  • Fixes owl:imports gives ValueError: I/O operation on closed file #319

Removed

• Support for rdflib.ConjunctiveGraph as a data graph, shapes graph, or ontology graph input type.