Using @StructuralType

[sariz]

I am trying to use @StructuralType to export interfaces like this:

@Export

@StructuralType

public interface Foo extends Exportable{

   public void method1();

   public void method2();

}

In javascript: 

bar.setFoo({

    method1: function(e) { ... }

    method2: function(e) { ... }

});

This doesn't work for me. Am I using it incorrectly?

Thanks!

[Manuel Carrasco Moñino]

@StructuralType is not implemented yet. If you take a look to the code there is a lot to do with this idea before having it implemented [1].

- Manolo

[1] http://code.google.com/p/gwt-exporter/source/browse/trunk/src/main/java/org/timepedia/exporter/rebind/ExportableTypeOracle.java#328

[Jay]

Is there any sort of design doc (besides Ray's blog post from March 2009) outlining the desired approach and/or abstract steps it would take to implement this? Even just a common set of TODOs in the code that can be searched for?

Thanks,

jay

[Manuel Carrasco Moñino]

Hi Jay

As you point, the only document around this idea is the Ray's post, there is no much about this idea in the code apart from the javadoc in annotation classes (StructuralType, SType) and some references to them in some classes JsStructuraTypeField, JsExportableClassType, ExportableTypeOracle y ClassExporter. 

As you can see the implementation code is incomplete, not functional at all, and could be outdated since gwtexporter has had many changes since these first steps.

If you wanted to go ahead with structural types,  the main class you have to study is the ClassExporter where happens the writing of deferred classes, although I'm aware the code can be difficult to understand. There are a good set of tests which check almost the features in the library, those tests are not standard gwt ones since then export classes to js and usage and assertions are performed in jsni. I had thought on go ahead with this as well, but I havent had enough spare time to face it yet.

- Manolo

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