DR-NTU (Digital Repository) Item

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://dr.ntu.edu.sg/schemas/item.json",
  "x-generated": "2026-08-19",
  "x-method": "derived",
  "x-source": "openapi/_original/ntu-drntu-repo-rest.yaml",
  "x-operator": "tenant",
  "x-operator-note": "dr.ntu.edu.sg CNAMEs to ntu-cris.4science.cloud. NTU's repository and NTU's data, running on 4Science's DSpace-CRIS platform. The shape below is the vendor's, not NTU's engineering.",
  "title": "DR-NTU (Digital Repository) Item",
  "description": "A DSpace 7 item resource as embedded in discovery search results from DR-NTU (Digital Repository of NTU).",
  "type": "object",
  "required": [
    "uuid",
    "type",
    "metadata"
  ],
  "properties": {
    "uuid": {
      "type": "string",
      "format": "uuid"
    },
    "name": {
      "type": "string"
    },
    "handle": {
      "type": "string",
      "description": "Persistent handle, e.g. 10356/213929."
    },
    "metadata": {
      "type": "object",
      "description": "Map of metadata field keys (e.g. dc.title) to arrays of value objects.",
      "additionalProperties": {
        "type": "array",
        "items": {
          "$ref": "#/$defs/metadataValue"
        }
      }
    },
    "inArchive": {
      "type": "boolean"
    },
    "discoverable": {
      "type": "boolean"
    },
    "withdrawn": {
      "type": "boolean"
    },
    "type": {
      "type": "string",
      "const": "item"
    },
    "uniqueType": {
      "type": "string"
    }
  },
  "additionalProperties": true,
  "$defs": {
    "metadataValue": {
      "type": "object",
      "required": [
        "value"
      ],
      "properties": {
        "value": {
          "type": "string"
        },
        "language": {
          "type": [
            "string",
            "null"
          ]
        },
        "authority": {
          "type": [
            "string",
            "null"
          ]
        },
        "confidence": {
          "type": [
            "integer",
            "null"
          ]
        },
        "place": {
          "type": "integer"
        }
      }
    }
  }
}