{
  "$id": "https://lithium-niobate.com/api/v1/schema/scalar.schema.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "anyOf": [
    {
      "required": [
        "value"
      ]
    },
    {
      "required": [
        "min",
        "max"
      ]
    },
    {
      "required": [
        "value_text"
      ]
    }
  ],
  "description": "One value of one property for one variant from one source, with conditions and provenance. The id is property/variant/source_id[-qualifier].",
  "properties": {
    "category": {
      "enum": [
        "structure",
        "ferroelectric",
        "thermal",
        "optical",
        "dielectric",
        "acoustic",
        "electrical",
        "photorefractive"
      ]
    },
    "conditions": {
      "$ref": "common.schema.json#/$defs/conditions"
    },
    "default": {
      "description": "Recommended record for this property and variant.",
      "type": "boolean"
    },
    "frame": {
      "$ref": "common.schema.json#/$defs/frame"
    },
    "id": {
      "pattern": "^[a-z0-9][A-Za-z0-9.-]*/[a-z0-9.-]+/[a-z0-9.-]+$",
      "type": "string"
    },
    "kind": {
      "const": "scalar"
    },
    "max": {
      "type": "number"
    },
    "min": {
      "type": "number"
    },
    "name": {
      "type": "string"
    },
    "notes": {
      "type": "string"
    },
    "property": {
      "description": "Property slug; may contain S/T or E/D boundary suffixes in upper case.",
      "pattern": "^[a-z0-9][A-Za-z0-9.-]*$",
      "type": "string"
    },
    "provenance": {
      "$ref": "common.schema.json#/$defs/provenance"
    },
    "public": {
      "description": "Generated: false when status is U.",
      "type": "boolean"
    },
    "symbol": {
      "type": "string"
    },
    "tensor_component": {
      "description": "Component label when the scalar is a tensor component (e.g. 'alpha_33').",
      "type": "string"
    },
    "uncertainty": {
      "$ref": "common.schema.json#/$defs/uncertainty"
    },
    "unit": {
      "$ref": "common.schema.json#/$defs/unit"
    },
    "value": {
      "type": "number"
    },
    "value_text": {
      "description": "Verbatim value when it is not a single number (e.g. a formula).",
      "type": "string"
    },
    "variant": {
      "$ref": "common.schema.json#/$defs/id"
    },
    "variant_note": {
      "type": "string"
    }
  },
  "required": [
    "id",
    "kind",
    "property",
    "name",
    "variant",
    "unit",
    "provenance"
  ],
  "title": "Scalar property record",
  "type": "object"
}