Code generation converts formal schemas into concrete Java objects, replacing repetitive domain-object boilerplate with reproducible build steps. Schema Registry supports Avro, Protobuf, and JSON Schema; Avro and Protobuf provide native generation tools, while JSON Schema uses an open-source plugin. section 3.2.6
A Gradle-based workflow connects schemas to generated application models:
- Place Avro schemas under src/main/avro and Protobuf schemas under src/main/proto. section 3.2.8
- Place JSON Schema files under src/main/json and configure that directory explicitly in build.gradle. section 3.2.8
- Use Gradle plugins to invoke the format-specific generators and control generated-file locations. section 3.2.6 section 3.2.8
- Keep schemas in Git, regenerate after committed changes, and distribute the resulting model updates to application developers. section 3.2.6
Generate model objects
Run ./gradlew clean build to generate Java code for the Avro, Protobuf, and JSON Schema types configured in the project. Protobuf generation can use a Maven Central protoc artifact, such as com.google.protobuf:protoc:3.25.0, instead of a local compiler installation. section 3.2.8
Listing 3.12 Generating the model objects
./gradlew clean build
Shows the single Gradle command that generates model objects from the project’s configured schemas. section 3.2.8
