codeant-ai-for-open-source[bot] commented on PR #38403:
URL: https://github.com/apache/superset/pull/38403#issuecomment-4054187024
## **Sequence Diagram**
This PR adds end to end support for big number charts in MCP chart
generation. The flow now validates big number specific requirements, maps
config into Superset form data, and selects either total only or trendline
visualization mode.
```mermaid
sequenceDiagram
participant Client
participant MCPService
participant SchemaValidator
participant ChartMapper
participant SupersetBackend
Client->>MCPService: Request chart generation with big number config
MCPService->>SchemaValidator: Validate chart type metric aggregate and
trendline requirements
SchemaValidator-->>MCPService: Return validated config
MCPService->>ChartMapper: Map config to Superset form data
alt Trendline enabled with temporal column
ChartMapper->>ChartMapper: Set viz type big number and granularity
fields
else Total only
ChartMapper->>ChartMapper: Set viz type big number total
end
MCPService->>SupersetBackend: Create chart from mapped form data
SupersetBackend-->>Client: Return created chart response
```
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