What was a toy project to play with Chevrotain to create a Nuxeo Domain Specific language became a new way to customize Nuxeo using a DSL and a new way to query it with GraphQL .

The idea is to create an interpreter that creates Java descriptor thru Nashorn and an online editor with visual rendition of the domain model (UML style).

It's a regular Nuxeo project that you can build with Maven:

mvn clean install

It then creates a regular Nuxeo package in nuxeo-dsl-package/nuxeo-dsl-package-1.0.4-SNAPSHOT.zip that you can install on a Nuxeo distribution.

Thanks to the Nuxeo Docker image it's quite easy to run the package. Simply create a init folder where you will copy the nuxeo-dsl-package-1.0.4-SNAPSHOT.zip file. After that run the following Docker command :

docker run --name nuxeo -v "$(pwd)/init":/docker-entrypoint-initnuxeo.d -p 8080:8080 --rm -ti nuxeo:9.10

After login at http://${DOCKER_HOST}:8080/ with Administrator/Administrator you end up on the Nuxeo DSL editor where you can start editing your model:

A sample domain definitions can be defined like this:

doctype Library extends Folder {
schemas {
    common dublincore
      lib:library { city, country}
  }    
  aliases {
    name prop {"dc:title"}
      city prop {"lib:city"}
      country prop {"lib:country"}        
      books query { "select * from Book where ecm:parentId = '${this.id}'", "Book"}
  }
  crud
}

doctype Book {
  schemas {
    common dublincore
      bk:book { author, isbn, pageCount integer}
  }
  aliases {
    title prop {"dc:title"}
      author prop {"bk:author"}
      isbn  prop {"bk:isbn"}
      pageCount prop {"bk:pageCount"}
  }
  crud
}

queries {
  libraries:Library "SELECT * From Library"
}

We define here two document types Library and Book with some property aliases and a query. Click on the Sync button to deploy the code to Nuxeo.

The two types are now deployed to the repository and we can query it with graphQL thru GraphiQL.

query libraries {
  libraries {
    _path    
    name
    city
    country
    books {
      _path
      title
      author 
      isbn
    }
  }  
  
}

mutation createLibrary{
  createLibrary(Library:{_path:"/" _name:"ucla" lib: { city:"LosAngeles" country: "USA"} }) {
    _id
    _path
    name
  }
}

mutation createBook($book: BookInput!) {
  createBook(Book: $book) {
    _id
    title
    author
    isbn      
  }  
}

mutation updateBook {
  updateBook(Book: { _path: "/ucla/us" bk: { isbn: "123456", author: "Damien"}}) {
    _id
    title
    author
    isbn
  }
}

mutation deleteBook {
  deleteBook(Book: { _path:"/ucla/us"})  
}

• Studio sync
• Doc Facets
• Doc schemas
• GraphQL integration
• GraphiQL in studio
• Alias in grammar
• Alias resolvers
• GraphQL schema reload on HotReload
• Parameterized alias and queries
• Mutations (basic CRUD)
• React library app with Appolo
• CodeMirror: Syntax higlighting and code completion

Most of the source code in the Nuxeo Platform is copyright Nuxeo and contributors, and licensed under the Apache License, Version 2.0.

See /licenses and the documentation page Licenses for details.

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