API.EWS.04 Create-replace-delete

In addition to supporting the discovery and retrieval of alerts, DCI EWS standard adopts the OGC API Features approach for managing alert resources through standard HTTP operations.

Each alert is represented as an individual feature within the alerts collection. Early warning systems may create, update, or remove alert features using standard RESTful operations defined by OGC API Features.

• Create – A new alert is published by creating a new feature in the alerts collection. The feature contains the alert geometry and the complete CAP Alert object within its properties.

• Replace – When an alert is revised, the existing feature is replaced with an updated representation. The replacement includes the complete updated CAP Alert object, ensuring the feature remains a complete representation of the current alert state.

• Delete – When an alert should no longer be available, the corresponding feature may be deleted from the collection. Implementations should consider operational and audit requirements before permanently removing alerts.

Example Operations

Create a new alert:

POST /collections/alerts/items

Replace an existing alert:

PUT /collections/alerts/items/{alertId}

Delete an alert:

DELETE /collections/alerts/items/{alertId}