GraphQL-Xtext

A GraphQL SDL lexer, parser, and validator that generates a traversable Abstract Syntax Tree from your GraphQL schema. GraphQL-Xtext will generate pure Java Objects that can be used at runtime.

The EMF objects can be used to implement Apollo Federation Spec and build a purely java based service that is truly open source.

Installing the Software

This project uses java 8 and maven 3.3+.

1. Download and install Eclipse 2019.

2. Install Xtext SDK in Eclipse:
   a. In Eclipse, click Help --> Install New Software

   b. In Available Software, click Add to add a repository with location:

   http://download.eclipse.org/modeling/tmf/xtext/updates/composite/releases/

   
   c. Select and install Xtext Complete SDK (2.19.0)

3. Restart Eclipse.

Setting up the Project

1. Clone graphql-xtext
2. Import the cloned project in Eclipse, click File --> Import Project --> Maven --> Existing Maven Project
3. Under the directory com.intuit.graphql, right click on GenerateGraphQL.mwe2 --> Run As --> 1 MWE2 Workflow

Testing the grammar in an IDE

Right-click on the com.intuit.graphql.ide directory and Run As Eclipse Application

Building the project

mvn clean install

Language Server Support

Graphql-Xtext builds a Language Server executable under com.intuit.graphql.parent/com.intuit.graphql.ide/target/, named com.intuit.graphql.ide-x.y.z-ls.jar. This can be used to build generic application and cloud-based IDEs for the grammar.

theia-xtext is an example of a cloud-based IDE that uses the xtext language server jar.

License

Apache 2.0

Contributing

Read the Contribution guide