graphql-java / graphql-java-type-generator

This library will autogenerate GraphQL types for usage in com.graphql-java:graphql-java

graphql-java-type-generator

THIS PROJECT IS NOT LONGER MAINTAINED AND IN READ ONLY MODE

About

This library will autogenerate GraphQL types for usage in com.graphql-java:graphql-java

The generation of types can be controlled using different strategies.

A default strategy implementation is provided, one which reads java .classes through reflection.

The default strategy is augmentable to customize any aspect at all.

In fact, there is a customizable strategy for everything from the name of a type, to which DataFetcher a field uses, down to which input arguments are available.

Usage

Since everything about type generation is configurable, types are generated based upon a BuildContext that specifies the various strategies, parameters, and type repositories.

A DefaultBuildContext is provided, or another one can be made.

The best entry point to this library is BuildContext's .getOutputType(obj), .getInputType(obj), or .getInterfaceType(obj).

Direct access is given if, for example, only fields are needed.

FAQ

• Recursive object creation? Yes.
• Java Generics? Yes, as long as type erasure has not happened.
• Enums? Yup
• Unions? Not yet... java doesn't really have those natively.
• Lists? Yes, and lists of lists
• Scalars? We additionally handle BigInteger and BigDecimal, byte, short, and char

Let us know what else you need.

graphql-java-type-generator's Issues

Push the project into Maven Central Repository

The project is very functional and usable in real world. However, it would be nice to have it in Maven Central Repository.

Upgrade to graphql-java 3.0.0

Would be nice, I tried upgrading manually, but a unit test failed. I'm not familiar enough with the internals to figure out what is going on.

Generate GraphQL types for Wildcard types

In generics, ?, ? extends Number, ? super Integer all need to be supported.

can't generate by Map.class

I have got a error when runing like this
BuildContext buildContext= DefaultBuildContext.reflectionContext; GraphQLOutputType a=buildContext.getOutputType(Map.class);

and the error result is

7:55.723 [main] WARN graphql.java.generator.type.TypeGenerator - Failed to generate type named sun_reflect_generics_reflectiveObjects_TypeVariableImpl with kind INPUT_OBJECT 14:47:55.728 [main] DEBUG graphql.java.generator.type.TypeGenerator - Failed to generate type, exception is graphql.AssertException: wrappedType can't be null at graphql.Assert.assertNotNull(Assert.java:10) at graphql.schema.GraphQLList.<init>(GraphQLList.java:13)

Unions

Best way to do it is via an interface

class Rabbit implements AnimalUnion {...}
class Dog implements AnimalUnion {...}

this will generate
union Animal = Rabbit | Dog

My 2c

Example maybe ?

a little example would be nice

Generate GraphQL types for TypeVariable types

In generics, the V in getOrDefault of java 8 does not work.