tomohidemiya / kgraphql

Pure Kotlin GraphQL implementation

KGraphQL

KGraphQL is a Kotlin implementation of GraphQL. It provides a rich DSL to set up the GraphQL schema.

data class Article(val id: Int, val text: String)

fun main() {
    val schema = KGraphQL.schema {
        query("article") {
            resolver { id: Int?, text: String ->
                Article(id ?: -1, text)
            }
        }
        type<Article> {
            property<String>("fullText") {
                resolver { article: Article ->
                    "${article.id}: ${article.text}"
                }
            }
        }
    }

    schema.execute("""
        {
            article(id: 5, text: "Hello World") {
                id
                fullText
            }
        }
    """.trimIndent()).let(::println)
}

Documentation

See the documentation for a more detailed explanation of the library.

Contributing

All contributions are welcome. Feel free to open issues and PRs!

Building

To build KGraphQL you only need to have JDK8 installed. invoke

./gradlew build

To perform local build.

Versioning

The versioning is following Semantic Versioning

Links

Specification : http://facebook.github.io/graphql/

License

KGraphQL is Open Source software released under the MIT license