GraphQL Java Codegen makes it easy to make your Java application to follow a schema-first approach whether it is a server or client application.

Following classes can be generated based on your GraphQL schema:

• Interfaces for GraphQL queries, mutations and subscriptions.
• Interfaces for GraphQL unions.
• POJO classes for GraphQL types and inputs.
• Enum classes for GraphQL enums.
• Interfaces for GraphQL type fields (e.g. for parametrized fields) aka "Resolvers".
• Client Request classes for GraphQL queries, mutations and subscriptions.

• Generate classes in Java, Kotlin or Scala.
• Recursive schemas lookup by file name pattern.
• Generate code based on GraphQL schema or GraphQL Query Introspection Result.
• Generate POJOs with or without: Builder pattern, immutable fields, toString(), equals() and hashCode(), etc.
• Flexible API interfaces naming conventions (based on schema file name, folder name, etc.)
• Custom java package names for model and API classes.
• Custom prefix/suffix for model, API, type resolver, request, response classes.
• Custom annotations for generated classes (e.g.: validation annotations for generated model classes or specific type fields, annotations for GraphQL directives, etc.)
• Relay support.
• Ability to define codegen configuration via external json file.

For the full list of codegen configs please refer to: Codegen Options

• Gradle plugin: graphql-java-codegen-gradle-plugin
• Maven plugin: grapqhl-java-codegen-maven-plugin
• SBT plugin: grapqhl-java-codegen-sbt-plugin

Please see CONTRIBUTING.md.

swagger-codegen