{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://huggingface.co/datasets/egobowwow/universal-annotations/resolve/v1.0.0/schemas/universal-annotation-adapter.schema.json",
  "title": "Declarative Universal Annotation adapter",
  "type": "object",
  "additionalProperties": false,
  "required": ["schema_version", "adapter_id", "target_schema_id", "rules"],
  "properties": {
    "schema_version": {"const": "1.0.0"},
    "adapter_id": {"type": "string", "minLength": 1},
    "target_schema_id": {"type": "string", "minLength": 1},
    "rules": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["target_field", "predicate_id", "subject_kind", "subject_id", "object_representation", "cardinality", "required"],
        "properties": {
          "target_field": {"type": "string", "minLength": 1},
          "predicate_id": {"type": "string", "minLength": 1},
          "subject_kind": {"type": ["string", "null"]},
          "subject_id": {"type": ["string", "null"]},
          "object_representation": {"enum": ["node_id", "node_concept", "concept", "value"]},
          "cardinality": {"enum": ["one", "many"]},
          "required": {"type": "boolean"}
        }
      }
    }
  }
}