Question 1

GraphQL SPQR vs GraphQL Java: which should I use?

Accepted Answer

GraphQL SPQR is code-first, generating schema from Java to reduce boilerplate, ideal for rapid integration. GraphQL Java is schema-first, offering more control over schema details but requiring manual SDL definition. Choose SPQR for speed with existing Java code; GraphQL Java for fine-grained schema design.

Question 2

How to add custom scalars in GraphQL SPQR?

Accepted Answer

Register custom scalars via the configuration API using type adapters or schema transformers. The library's extensibility allows defining how Java types map to GraphQL scalars, though it may require additional setup compared to out-of-the-box solutions.

Question 3

Does GraphQL SPQR work well with Spring Boot?

Accepted Answer

Yes, there's a Spring Boot starter, but it's described as 'very young' in the README. It simplifies setup, but for production use, verify its maturity and community support for features like dependency injection or security integration.

Question 4

Can I use GraphQL SPQR with Kotlin without issues?

Accepted Answer

Partially; Kotlin 1.3.70+ is recommended with the -Xemit-jvm-type-annotations compiler flag for proper type annotation support. The README notes known issues, so expect potential hiccups in annotation handling or generic types.

Question 5

How to handle mutations in GraphQL SPQR?

Accepted Answer

Define mutations by annotating methods with @GraphQLMutation in service classes, similar to queries. The library treats them as operations that modify data, and you can integrate them seamlessly with existing business logic.

Question 6

Is GraphQL SPQR good for large-scale enterprise applications?

Accepted Answer

It excels in legacy integration and rapid prototyping, but for large-scale apps, consider the trade-off: dynamic schema generation might add startup overhead, and the young Spring Boot starter could lack enterprise features like monitoring or advanced caching.

Question 7

How to secure GraphQL endpoints with SPQR?

Accepted Answer

Implement security through custom resolvers or interceptors using SPQR's extensible hooks. Since it's not opinionated, you'll need to integrate with frameworks like Spring Security manually, which can be more complex than pre-built solutions.

graphql-spqr

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