{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "ObjectType",
  "description": "Source description of an OPC-UA ObjectType for ModelDesign XML generation.",
  "type": "object",
  "properties": {
    "description": {
      "description": "The description of the ObjectType.",
      "type": "string"
    },
    "name": {
      "description": "The name of the ObjectType (e.g. MotorType).",
      "type": "string"
    },
    "variable": {
      "description": "The list of variables found in the ObjectDesign modelization.",
      "type": "array",
      "items": {
        "$ref": "#/$defs/Variable"
      }
    }
  },
  "required": [
    "name",
    "description",
    "variable"
  ],
  "$defs": {
    "AccessLevel": {
      "description": "The access level of the variable.\n\nThis is a subset of [available levels].\n\n[available levels]: https://reference.opcfoundation.org/specs/OPC-10000-3/8.57",
      "type": "string",
      "enum": [
        "Read",
        "Write",
        "ReadWrite"
      ]
    },
    "ScalarDataType": {
      "description": "OPC-UA scalar datatypes that can be used for variables. The set of types has been chosen arbitrarily.",
      "type": "string",
      "enum": [
        "Boolean",
        "SByte",
        "Byte",
        "Int16",
        "UInt16",
        "Int32",
        "UInt32",
        "Int64",
        "UInt64",
        "Float",
        "Double",
        "String",
        "DateTime",
        "Guid",
        "ByteString",
        "LocalizedText"
      ]
    },
    "Variable": {
      "description": "Represents the modelization for a variable member of an ObjectType.",
      "type": "object",
      "properties": {
        "access_level": {
          "description": "The access level of the variable.",
          "$ref": "#/$defs/AccessLevel"
        },
        "array_dimensions": {
          "description": "A list of [array dimensions] for the variable.\n\n[array dimensions]: https://reference.opcfoundation.org/specs/OPC-10000-6/5.2.5",
          "type": [
            "array",
            "null"
          ],
          "items": {
            "type": "integer",
            "format": "int32"
          },
          "minItems": 1
        },
        "data_type": {
          "description": "The OPC-UA data type of the variable.",
          "$ref": "#/$defs/ScalarDataType"
        },
        "description": {
          "description": "The description of the variable.",
          "type": "string"
        },
        "name": {
          "description": "The name of the variable.",
          "type": "string"
        }
      },
      "required": [
        "name",
        "description",
        "data_type",
        "access_level"
      ]
    }
  }
}