2011/10/23 Rafael Pestano <rmpestano@gmail.com>

Hello Paul, thanks for your enlightening reply.

The plugin is about a code generator for a home made Java EE6 framework and for instance it will generate very simple xhtml and java classes, so for example the generate-controller plugin would generate

@ViewAccessScoped
@Named("personMBean")
public class PersonMBean extends AbstractBaseMBean<Person> implements Serializable, ModalObserver {

   @Inject
    public void setPersonService(PersonService personService) {//service layer will be generated togheter
        super.setBaseService(personService);
    }

some other very simple methods
}

for the controller-plugin maybe i dont need to understand the model class (just to import it) cause its just a matter of replacing parammeters by the domain object but in the view-plugin it will be necessary for sure.

Another concern i have is how to format the generated code? maybe the velocity template could help on that.

Ive seen the Arquillian example, how can i clone it and forge project?

Thanks again!

2011/10/23 Paul Bakker <paul.bakker.nl@gmail.com>

Hi Rafael,

There are two things you need to do:
1) "understand" the Person class
2) generate new code

1)
You can use a command parameter to get the Person class: @Option(name = "class", required = true, type = PromptType.JAVA_CLASS) JavaResource classUnderTest

JavaResource is a rich file representation of the class.

Now you can use the JavaSourceFacet to get information about the class itself:

JavaSourceFacet java = project.getFacet(JavaSourceFacet.class);
JavaSource<?> javaSource = classUnderTest.getJavaSource();

javaSource has methods such as getPackage() etc.

2)
Now you have to generate code. There are two ways to do this, depending on your needs.
The most elegant way is to use the "JavaParser" builder API:

JavaClass javaClass = JavaParser.create(JavaClass.class)
.setPackage(entityPackage)
.setName(entityName)
.setPublic()

.addAnnotation(Entity.class).getOrigin()
.addInterface(Serializable.class);
Field<JavaClass> id = javaClass.addField("private Long id = null;");

….

My experience is that this works best for small classes. If you need to generate a lot of code it might be better to use a tempting framework such as Apache Velocity.
You can find an example of this in the code of the Arquillian plugin: https://github.com/forge/plugin-arquillian/blob/master/src/main/java/org/jboss/seam/forge/arquillian/ArquillianPlugin.java#L93

You can just add Velocity to your pom file and it will work.

If you have any more questions, let us know! What kind of plugin are you writing?

Paul Bakker

On Oct 23, 2011, at 2:26 AM, Rafael Pestano wrote:

Hi everyone,

this is my first mail to this list and id like to congratulate the Forge team for their work.

my question is, what's the best way to generate .java, .xhtml files with forge?

Id like to write a plugin which would receive an entity class as parameter and generate some code on top of it, eg:

$ generate-service Person
$ generate-controller Person
$ generate-view Person

Where Person is a domain object, is it possible with Forge? if yes, whats the best way?

thanks in advance.

--
Att,

Rafael M. Pestano

Desenvolvedor Java Cia. de Processamento de Dados do Rio Grande do Sul
Graduando em Ciência da Computação UFRGS
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Att,

Rafael M. Pestano

Desenvolvedor Java Cia. de Processamento de Dados do Rio Grande do Sul
Graduando em Ciência da Computação UFRGS

--
Att,

Rafael M. Pestano

Desenvolvedor Java Cia. de Processamento de Dados do Rio Grande do Sul
Graduando em Ciência da Computação UFRGS