OpenAPI ↔ Java. This is one compiler in a suite, all focussed on the same task: Compiler Driven Development (CDD).

Each compiler is written in its target language, is whitespace and comment sensitive, and has both an SDK and CLI.

The CLI—at a minimum—has:

cdd-java CLI
Usage:
  cdd-java --help
  cdd-java --version
  cdd-java serve_json_rpc [--port <port>] [--listen <ip>]
  cdd-java from_openapi to_sdk_cli -i <spec.json> [-o <target_directory>] [--no-github-actions] [--no-installable-package]
  cdd-java from_openapi to_sdk -i <spec.json> [-o <target_directory>]
  cdd-java from_openapi to_server -i <spec.json> [-o <target_directory>]
  cdd-java to_openapi -f <path/to/code> [-o <spec.json>]
  cdd-java to_docs_json [--no-imports] [--no-wrapping] -i <spec.json> [-o <docs.json>]

The goal of this project is to enable rapid application development without tradeoffs. Tradeoffs of Protocol Buffers / Thrift etc. are an untouchable "generated" directory and package, compile-time and/or runtime overhead. Tradeoffs of Java or JavaScript for everything are: overhead in hardware access, offline mode, ML inefficiency, and more. And neither of these alterantive approaches are truly integrated into your target system, test frameworks, and bigger abstractions you build in your app. Tradeoffs in CDD are code duplication (but CDD handles the synchronisation for you).

The cdd-java compiler leverages a unified architecture to support various facets of API and code lifecycle management.

• Compilation:
  • OpenAPI → Java: Generate idiomatic native models, network routes, client SDKs, database schemas, and boilerplate directly from OpenAPI (.json / .yaml) specifications.
  • Java → OpenAPI: Statically parse existing Java source code and emit compliant OpenAPI specifications.
• AST-Driven & Safe: Employs static analysis (Abstract Syntax Trees) instead of unsafe dynamic execution or reflection, allowing it to safely parse and emit code even for incomplete or un-compilable project states.
• Seamless Sync: Keep your docs, tests, database, clients, and routing in perfect harmony. Update your code, and generate the docs; or update the docs, and generate the code.

The compiler is built using javaparser-core for robust AST-driven extraction of Java classes and routes without the need to compile them first. It avoids reflection entirely. Jackson is used for parsing and writing JSON specs.

(The boxes below reflect the features supported by this specific cdd-java implementation)

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.