Dawn Codegen

Dawn CodeGen Tutorial

Before you start make sure that you have the following components installed:

• EMF
• CDO
• Dawn
• GMF

Preparation

We will examine the Dawn Codegen by using the Acore example from the Dawn SDK. In the beginning we need to get all necessary model files. Open the Plug-ins View (Window-->Show View-->Others) as shown in the picture below.

Now select the plug-in org.eclipse.emf.cdo.dawn.examples.acore and import it as soure plug-in

Generate the EMF extension with Dawn

Generate the EMF plugins

Now generate the EMF edit and the EMF editor plugin for your domain model.

Generate the Dawn Genmodel

To generate the Dawn Genmodel you now need to right-click the *.genmodel and select "Generated Dawn Genmodel"

This will create two files. One named *.dawngenmodel and one named *.dawngenmodel_emf. The previous is a global file which contains information that can influence all extended frameworks. The latter only contain specific data for the EMF extension.

Generate GMF extension with Dawn

Generate the GMF plugins

Let's generate the GMF diagram plug-in.

Generate the Dawn Genmodel

Now your workspace contains the plug-ins: the one containing the model code, the edit plug-in and the diagram plug-in. Now right click the the gmf gen model an examine the context menu. You will see an additional entry called "Generate Dawn Genmodel"

Running this will create a new file called acore.dawngenmodel. This model contains specific information for the Dawn generator.

For example it allows to configure the names of the extension classes generated by dawn.

Generate the extension

In a final step now right click the Dawn genmodel and choose "Generate Dawn GMF Fragment" from the context menu.

Now a fragment will be created containing all the specific extensions for your diagram.