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1) Show the plugins.groovy and routes.groovy files in the WEB-INF folder in the Gaelyk project diagram. They are currently absent from the diagram. 2 Put a star or some other icon next to the mandatory plugins folder and the 2 mandatory plugin files (plugins.groovy and the plugin descriptor file) in the diagram. This will help show that one just needs to mix in in these files with the rest of their own project's files.

The easiest way to get setup rapidly is to download the template project from the download section. It provides a ready-to-go project with the right configuration files pre-filled and an appropriate directory layout: web.xml preconfigured with the Gaelyk servlets appengine-web.xml with the right settings predefined (static file directive) a sample Groovlet and template the needed JARs (Groovy, Gaelyk and Google App Engine SDK)

Running your application locally Google App Engine provides a local servlet container, powered by Jetty, which lets you run your applications locally. If you're using the Gaelyk template, when you're at the root of your project — and we assume you have installed the App Engine SDK on your machine — you can run your application with the following command-line: dev_appserver.sh war

Deploying your application in the cloud Once you're at the root of your application, simply run the usual deployment command: appcfg.sh update war

you could leverage Entity's getProperties() method, in combination with JSON-lib's groovy-friendliness and ability to serialize maps as JSON. So, say you have an Entity: def person = new Entity("person") person.name = "Guillaume Laforge" def jsonString = person.properties as JSONObject Have a look at JSON-lib and the Entity JavaDoc. And I think it'll solve your problem pretty neatly!

you can use the sample project that the google plugin for eclipse create for you. Then you can easily replace the generated java code by groovy / gaelyk code. Note that you need to add the jars in the war/WEB-INF/lib of your project, and add them in the project build path options.