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Change kinds

Every event owlcompare emits carries a kind — a stable string like class_added, restriction_changed, or object_property_removed — that identifies exactly what changed. This page will be the exhaustive catalog of every kind, grouped by layer and pattern, with the slice that emits it and the JSON details it carries. New kinds are forward-compatible with the JSON schema (it deliberately does not constrain kind to an enum), so this catalog grows without a schema bump.

This page is being expanded

The outline below anchors the structure; the full per-kind table is coming.

What this page will cover

  • Layer 0 — syntactic — triple_added, triple_removed.
  • Entities — class_added / class_removed, the property variants, and entity_deprecated.
  • Hierarchy — class_parent_added / _removed, class_reparented, and the property-hierarchy equivalents.
  • Restrictions — cardinality, someValuesFrom / allValuesFrom / hasValue, and domain_* / range_* add / remove / change variants.
  • Annotations — annotation_added / _removed / _changed, label_changed, and ontology_metadata_changed.
  • Class sets — the *_union_* and datatype_facet_* decoded-structure kinds, plus replaced_by_*.
  • Renames — the consolidated *_renamed kinds.
  • For each: the layer, the default severity, the emitting slice, and the details payload shape.