Rust-server: implement ValidateComposited traits for complex types and add integer enum support

[dsteeley]

The client example generator in processParam used an empty string fallback when no example was specified in the OpenAPI spec. For boolean and numeric primitive types this produced invalid Rust, either empty arguments or bare commas, this caused compilation failures in the generated client examples.

These defaults appear only in generated client example code (examples/client/main.rs) and are commented. Parameters of other types without examples continue to disable the operation via the existing x-no-client-example mechanism.

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• Read the contribution guidelines.
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  ./mvnw clean package || exit
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---

Summary by cubic

Adds serde_valid composite validation traits to rust-server models, improves client example generation to avoid invalid Rust, and adds integer enum support. Client examples now skip operations when required query params lack examples, and query param examples are only used when provided in the spec.

• New Features

  • Implemented ValidateCompositedMinLength and ValidateCompositedMaxLength for complex types (behind the validate feature).
  • Added support for integer enums.

• Bug Fixes

  • Disabled client examples when required query parameters have no examples and filtered those ops from the CLI list.
  • Stopped auto-generating query parameter examples; only use examples from the spec.
  • Ensured query parameters are processed for example generation.

^{Written for commit 9cac9c8. Summary will update on new commits.}

[cubic-dev-ai]

2 issues found across 30 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="samples/server/petstore/rust-server/output/openapi-v3/examples/client/main.rs">

<violation number="1" location="samples/server/petstore/rust-server/output/openapi-v3/examples/client/main.rs:83">
P2: `QueryExampleGet` is still listed as an accepted CLI operation, but its match arm is commented out, so choosing it will fall through to `panic!("Invalid operation provided")`. Remove it from the accepted list or re-enable the handler to avoid runtime panics for a valid option.</violation>
</file>

<file name="samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/client/main.rs">

<violation number="1" location="samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/client/main.rs:296">
P2: CLI accepts operations (e.g., LoginUser/DeleteUser) that no longer have match arms, so valid inputs now hit the default panic at runtime.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}