{
  "$defs": {
    "Alignment": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "$ref": "#/$defs/AlignmentMethod"
        },
        "score": {
          "default": 1.0,
          "maximum": 1.0,
          "minimum": 0.0,
          "title": "Score",
          "type": "number"
        }
      },
      "required": [
        "method"
      ],
      "title": "Alignment",
      "type": "object"
    },
    "AlignmentMethod": {
      "enum": [
        "eli-structural",
        "labse",
        "manual"
      ],
      "title": "AlignmentMethod",
      "type": "string"
    },
    "Lang": {
      "description": "Supported language codes (ISO 639-1).",
      "enum": [
        "de",
        "fr",
        "it",
        "rm",
        "en"
      ],
      "title": "Lang",
      "type": "string"
    },
    "SourceRef": {
      "additionalProperties": false,
      "description": "Provenance for a record (hard rule #3).\n\nA record without provenance must never be ingested, so ``uri`` and\n``license`` are required.",
      "properties": {
        "name": {
          "description": "Upstream source name, e.g. 'Fedlex', 'SLDS', 'TERMDAT'.",
          "title": "Name",
          "type": "string"
        },
        "uri": {
          "description": "Citable URI of the upstream record.",
          "format": "uri",
          "maxLength": 2083,
          "minLength": 1,
          "title": "Uri",
          "type": "string"
        },
        "license": {
          "description": "SPDX id or short tag, e.g. 'CC-BY-4.0', 'OGD-open-use'.",
          "title": "License",
          "type": "string"
        },
        "ref": {
          "anyOf": [
            {
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "description": "Human citation, e.g. 'SR 220 Art. 102' or 'BGE 146 IV 226'.",
          "title": "Ref"
        },
        "retrieved_at": {
          "description": "UTC timestamp of retrieval.",
          "format": "date-time",
          "title": "Retrieved At",
          "type": "string"
        }
      },
      "required": [
        "name",
        "uri",
        "license"
      ],
      "title": "SourceRef",
      "type": "object"
    }
  },
  "additionalProperties": false,
  "description": "A parallel segment pair (a TM unit).",
  "properties": {
    "tu_id": {
      "pattern": "^og:tu:[A-Za-z0-9_-]+$",
      "title": "Tu Id",
      "type": "string"
    },
    "src_lang": {
      "$ref": "#/$defs/Lang"
    },
    "tgt_lang": {
      "$ref": "#/$defs/Lang"
    },
    "src": {
      "minLength": 1,
      "title": "Src",
      "type": "string"
    },
    "tgt": {
      "minLength": 1,
      "title": "Tgt",
      "type": "string"
    },
    "domain": {
      "items": {
        "type": "string"
      },
      "title": "Domain",
      "type": "array"
    },
    "source": {
      "$ref": "#/$defs/SourceRef"
    },
    "alignment": {
      "$ref": "#/$defs/Alignment"
    }
  },
  "required": [
    "tu_id",
    "src_lang",
    "tgt_lang",
    "src",
    "tgt",
    "source",
    "alignment"
  ],
  "title": "TranslationUnit",
  "type": "object"
}