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content assist problem [message #868603]

Wed, 02 May 2012 05:29

Eclipse User

Hi

I wonder if I can do a thing! Suppose I have my interface and want to instantiate in IMyinterfaces MyDslProposalProvider I did this thing ... I'll post my code

public class MyDslProposalProvider extends AbstractMyDslProposalProvider {

Injector injector=Guice.createInjector();
IMyinterfaces nameistance=injector.getInstance(IMyinterfaces.class)

//after

@Override
public void completeAttributo_Name(EObject model, Assignment assignment,
ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
for (String proposal :nameistance.getProposalFor(ProposalType.ATTRIBBUTE)) {
acceptor.accept(createCompletionProposal(proposal, context));
}
}

First of all I could do this thing .... is right?? or how should I do?
The infrastructure is built correctly, but when I start the application
appropriately tells me that there are these errors

1 [main] ERROR org.xtext.example.mydsl.ui.MyDslExecutableExtensionFactory - com.google.inject.ProvisionException: Guice provision errors:

1) No implementation for org.xtext.example.mydsl.ui.contentassist.IMyinterfaces was bound.

I think because the implementation is lacking .... how am I to do? where can I implement in order to test if it works!
Excuse me but what the documentation does not understand much!!
thanks Embarrassed

Re: content assist problem [message #868677 is a reply to message #868603]

Wed, 02 May 2012 07:44

Eclipse User

Hi,

a short answer is: in your snippet, you create a new injector (without any bindings) and then try to get an instance of IMyinterfaces from it. Of course, no implementation is bound.
Usually, you define a binding in the existing module (here the UIModule, you cannot only override existing bindings, but define additional ones... for your own interfaces) and then use the inject annotation in order to obtain an instance.

Alex

Re: content assist problem [message #868731 is a reply to message #868677]

Wed, 02 May 2012 09:11

Eclipse User

I'm sorry I almost understand ...... but do you mind if I do as a courtesy?

Re: content assist problem [message #869312 is a reply to message #868731]

Thu, 03 May 2012 04:05

Eclipse User

What does your IMyinterfaces.class look like. Do you actually have an implementation of that interface, if so how many?
Before using injection, have you tried out your content assist method with an actual instance (nameinstance not instantiated via injection but via constructor)?

As to the injection part:

-in your MyDdlUIModule you write

public Class<? extends IMyinterfaces> bindIMyInterfaces() {
		return MyInterfacesImplementation.class;
	}

-in MyDslProposalProvider you write

@Inject
IMyinterfaces nameistance;

Alex

Re: content assist problem [message #869387 is a reply to message #869312]

Thu, 03 May 2012 06:25

Eclipse User

Ho risolto grazie tante tante Alexander!!!!

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