Armbruster IT Blog

In reply to my today’s annoncement of the Neo4j Grails plugin, @StigLau asked me to provide an example for using the Neo4j Grails plugin. So here we go:

1. Create your sample application:

   grails create-app neo4jtest; cd neo4jtest

2. Remove the hibernate plugin:

   grails uninstall-plugin hibernate

3. Add the Neo4j plugin:

   grails install-plugin neo4j

4. create some sample domain classes:

   grails create-domain-class Author
   grails create-domain-class Book

5. create a controller for the domain class

   grails create-controller Author
   grails create-controller Book

6. modify the domain classes:

   class Author {
    
       String name
       Date dob
    
       static hasMany = [ books: Book ]
   }

   and

   class Book {
       String title
       static belongsTo = [author:Author]
   }

7. modify the controller to use dynamic scaffolding:

   class AuthorController {
       def scaffold = true
   }

   class BookController {
       def scaffold = true
   }

8. start up the application:

   grails run-app

9. use it, love it: go to http://localhost:8080/neo4jtest, add some authors and books.
10. to explore the Neo4j node space created with your grails app, check out Neoclipse.

UPDATE: Use Grails 1.2 -M2 or M3. This will not work with the current stable Grails 1.1.1 version.