Graphql Schema Generation

Edge Cases

Schema Flow

flowchart TD
    A([Start: GraphQL Schema Generation]) --> B{Schema source?}
    B -- Domain model --> C[Map entities → GraphQL types]
    B -- REST API --> D[Convert endpoints → queries/mutations]
    B -- Database schema --> E[Introspect tables → types + resolvers]
    C & D & E --> F[Define scalar types: ID, String, Int, DateTime, custom]
    F --> G[Model relationships: one-to-one, one-to-many, many-to-many]
    G --> H{Nullable vs non-null?}
    H --> I[Apply ! where field is always present]
    I --> J[Define Query type: list, single, filtered, paginated]
    J --> K{Mutations needed?}
    K -- Yes --> L[Define Mutation type: create, update, delete, batch]
    K -- No --> M
    L --> M{Subscriptions needed?}
    M -- Yes --> N[Define Subscription type for real-time events]
    M -- No --> O
    N & O --> P[Define input types for mutations]
    P --> Q{Auth/access control?}
    Q -- Yes --> R[Add directives: @auth, @deprecated, @skip, custom]
    Q -- No --> S
    R & S --> T{Pagination strategy?}
    T -- Cursor-based --> U[Add Connection/Edge/PageInfo types]
    T -- Offset-based --> V[Add limit/offset args]
    U & V --> W[Validate schema: no circular deps, no orphan types]
    W --> X[Generate SDL file + resolver stubs]
    X --> Y([Output: GraphQL schema + resolver scaffolding])

Examples

• Input Example
• Output Example

Quality Gate

1. Are inputs separate from objects?
2. Is pagination enforced on lists?
3. Are error unions included in mutations?
4. is nullability explicitly handled?
5. is the schema Relay-compliant?

MCP Dependencies

• @upstash/context7-mcp: Library documentation and examples.

Changelog