codeant-ai-for-open-source[bot] commented on PR #37107:
URL: https://github.com/apache/superset/pull/37107#issuecomment-3765875114
## **Sequence Diagram**
The PR migrates chart-related actions to TypeScript and consolidates the
chart data request flow. This diagram shows the core success-path: Explore
triggers a chart data request, the action builds and posts the payload, handles
the chart data response, updates chart state, and then triggers annotation
queries which are fetched separately.
```mermaid
sequenceDiagram
participant Explore as Explore UI
participant ChartActions as Chart Actions (postChartFormData /
exploreJSON)
participant Client as SupersetClient (HTTP)
participant Server as Chart Data API
participant Annotations as AnnotationQuery flow
Explore->>ChartActions: postChartFormData(formData)
ChartActions->>Client: POST /api/v1/chart/data (built payload)
Client-->>Server: HTTP request
Server-->>Client: 200 OK (chart data JSON)
Client-->>ChartActions: response + json
ChartActions->>ChartActions: handleChartDataResponse -> dispatch
CHART_UPDATE_SUCCEEDED
ChartActions-->>Explore: update chart state (queriesResponse, rendered)
ChartActions->>Annotations: for each annotation ->
runAnnotationQuery(...)
Annotations->>Client: POST annotation JSON payload
Client-->>Server: annotation request
Server-->>Client: 200 OK (annotation data)
Client-->>Annotations: annotation response
Annotations-->>ChartActions: dispatch ANNOTATION_QUERY_SUCCESS
```
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