Project draft

A grouping of tasks: a project in a tracker, one disaster-response operation, a campaign. Called differently in different settings, with the same common attributes.


Japanese name	プロジェクト
Type IRI	`https://datamodels.jp/ns/task/Project`
@context	`https://datamodels.jp/context/task/v1.jsonld` (alias, latest compatible version) `https://datamodels.jp/context/task/v1.0.0.jsonld` (this version, immutable)
JSON Schema	`/schema/task/Project/v1.json` `/schema/task/Project/v1.0.0.json`
Examples	key-values · normalized
Source	github.com/geolonia/datamodels

Attributes

name

required

Name or subject

Value: Property, string
IRI: https://uri.etsi.org/ngsi-ld/name

description

Description

Value: Property, string
IRI: https://uri.etsi.org/ngsi-ld/v1/ngsi-ld-core-context-v1.8.jsonld#description

identifier

Short handle: a slug or code, unique within the source system

Value: Property, string
IRI: https://schema.org/identifier

parent

Parent project

Value: Relationship → Project
IRI: https://datamodels.jp/ns/task/parent

projectStatus

State; status is protected in the core context, hence projectStatus

Value: Property, string: active | closed | archived
IRI: https://datamodels.jp/ns/task/projectStatus

isPublic

true when public

Value: Property, boolean
IRI: https://datamodels.jp/ns/task/isPublic

homepage

Homepage

Value: Property, string (uri)
IRI: https://schema.org/url

start

Planned start

Value: Property, string (date-time)
IRI: https://datamodels.jp/ns/task/start

end

Planned end

Value: Property, string (date-time)
IRI: https://datamodels.jp/ns/task/end

location

Location as any GeoJSON geometry: point, line, polygon or a collection

Value: GeoProperty (Geometry)
IRI: https://uri.etsi.org/ngsi-ld/v1/ngsi-ld-core-context-v1.8.jsonld#location

keywords

Keywords or labels

Value: Property, array
IRI: https://schema.org/keywords

source

URL of this object in the system of record

Value: Property, string (uri)
IRI: https://smart-data-models.github.io/data-models/terms.jsonld#/definitions/source

externalId

Identifier in the system of record

Value: Property, string
IRI: https://datamodels.jp/ns/task/externalId

dateCreated

Creation time in the system of record (distinct from the broker attribute createdAt)

Value: Property, string (date-time)
IRI: https://smart-data-models.github.io/data-models/terms.jsonld#/definitions/dateCreated

dateModified

Last modification time in the system of record

Value: Property, string (date-time)
IRI: https://smart-data-models.github.io/data-models/terms.jsonld#/definitions/dateModified

Example (key-values)

The examples are a fictional scenario (heavy rain in Chiyoda, Tokyo). Place names and codes are real; the events, people and teams are invented. See writing examples.

json

{
  "id": "urn:ngsi-ld:Project:heavy-rain-2026-07",
  "type": "Project",
  "name": "令和8年7月大雨 災害対応",
  "description": "7/8〜 大雨に伴う区の災害対応オペレーション",
  "identifier": "heavy-rain-2026-07",
  "projectStatus": "active",
  "isPublic": false,
  "homepage": "https://tracker.example.jp/projects/heavy-rain-2026-07",
  "start": "2026-07-08T07:00:00+09:00",
  "location": {
    "type": "Polygon",
    "coordinates": [
      [
        [
          139.73,
          35.67
        ],
        [
          139.78,
          35.67
        ],
        [
          139.78,
          35.705
        ],
        [
          139.73,
          35.705
        ],
        [
          139.73,
          35.67
        ]
      ]
    ]
  },
  "keywords": [
    "大雨",
    "災害対応"
  ],
  "source": "https://tracker.example.jp/projects/heavy-rain-2026-07",
  "externalId": "42",
  "dateCreated": "2026-07-08T06:00:00+09:00",
  "dateModified": "2026-07-08T11:05:00+09:00"
}

Example (normalized)

json

{
  "@context": [
    "https://datamodels.jp/context/task/v1.0.0.jsonld",
    "https://uri.etsi.org/ngsi-ld/v1/ngsi-ld-core-context-v1.8.jsonld"
  ],
  "id": "urn:ngsi-ld:Project:heavy-rain-2026-07",
  "type": "Project",
  "name": {
    "type": "Property",
    "value": "令和8年7月大雨 災害対応"
  },
  "description": {
    "type": "Property",
    "value": "7/8〜 大雨に伴う区の災害対応オペレーション"
  },
  "identifier": {
    "type": "Property",
    "value": "heavy-rain-2026-07"
  },
  "projectStatus": {
    "type": "Property",
    "value": "active"
  },
  "isPublic": {
    "type": "Property",
    "value": false
  },
  "homepage": {
    "type": "Property",
    "value": "https://tracker.example.jp/projects/heavy-rain-2026-07"
  },
  "start": {
    "type": "Property",
    "value": {
      "@type": "DateTime",
      "@value": "2026-07-08T07:00:00+09:00"
    }
  },
  "location": {
    "type": "GeoProperty",
    "value": {
      "type": "Polygon",
      "coordinates": [
        [
          [
            139.73,
            35.67
          ],
          [
            139.78,
            35.67
          ],
          [
            139.78,
            35.705
          ],
          [
            139.73,
            35.705
          ],
          [
            139.73,
            35.67
          ]
        ]
      ]
    }
  },
  "keywords": {
    "type": "Property",
    "value": [
      "大雨",
      "災害対応"
    ]
  },
  "source": {
    "type": "Property",
    "value": "https://tracker.example.jp/projects/heavy-rain-2026-07"
  },
  "externalId": {
    "type": "Property",
    "value": "42"
  },
  "dateCreated": {
    "type": "Property",
    "value": {
      "@type": "DateTime",
      "@value": "2026-07-08T06:00:00+09:00"
    }
  },
  "dateModified": {
    "type": "Property",
    "value": {
      "@type": "DateTime",
      "@value": "2026-07-08T11:05:00+09:00"
    }
  }
}

Link header

http

Link: <https://datamodels.jp/context/task/v1.jsonld>; rel="http://www.w3.org/ns/json-ld#context"; type="application/ld+json"

How to validate data and send it to a broker: Using the models.

Corresponding standards: GitHub repository

GitHub repository

This model	Maps to	Note
`name`	`name`
`description`	`description`
`identifier`	`full_name`
`parent`	no counterpart	a fork's parent means the copied-from repository
`projectStatus`	`archived`	true → archived
`isPublic`	`private`	negated
`homepage`	`html_url`
`keywords`	`topics`
`source`	`html_url`
`externalId`	`id`
`dateCreated`	`created_at`
`dateModified`	`updated_at`

Corresponding standards: Redmine project

Redmine project

This model	Maps to	Note
`name`	`name`
`description`	`description`
`identifier`	`identifier`
`parent`	`parent.id`
`projectStatus`	`status`	1 → active
`isPublic`	`is_public`
`homepage`	`homepage`
`location`	`geom`	redmine_gtt project boundary
`source`	`<base_url>/projects/<identifier>`
`externalId`	`id`
`dateCreated`	`created_on`
`dateModified`	`updated_on`

Notes

Upstream considered (2026-09-18): Smart Data Models dataModel.IssueTracking (Open311 service_requests/services; IUDX IssueReporting), both citizen-complaint records shaped by one country's municipal process, not task models; dataModel.Transportation CityWork and dataModel.PredictiveMaintenance, domain-specific. RFC 8984 (JSCalendar Task) is the universal reference and supplies the value spaces used here. See issue #22.
The core is deliberately small. System-specific data (time spent, milestones, watchers, custom fields, map rotation) belongs in extensions.
status is a protected core-context term, hence projectStatus.

Model content on this page is licensed under CC BY 4.0. LICENSE-CONTENT

Project draft ​

Attributes ​

name ​

description ​

identifier ​

parent ​

projectStatus ​

isPublic ​

homepage ​

start ​

end ​

location ​

keywords ​

source ​

externalId ​

dateCreated ​

dateModified ​

Example (key-values) ​

Example (normalized) ​

Link header ​

Corresponding standards: GitHub repository ​

Corresponding standards: Redmine project ​

Notes ​