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Generic access for QualifiedName [message #786665]

Mon, 30 January 2012 17:33

Benjamin Schwertfeger

Messages: 53
Registered: July 2009

Member

Hi,
I try to write information of elements inside a xtext resource to the user and track changes while the file is edited. To identify the element I would like to use qualified names. Is there a way to access qualified names of elements in an open xtext editor without being part of the editor (Knowing the used module/Injector)?

The Access and ProjectDescriptions could work if the elements are exported and the file is saved, but is perhaps slow and not my preferred way.

Thanks,
Benjamin

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Re: Generic access for QualifiedName [message #787176 is a reply to message #786665]

Tue, 31 January 2012 08:44

Meinte Boersma

Messages: 434
Registered: July 2009
Location: Leiden, Netherlands

Senior Member

The runtime module for the non-UI plug-in binds IQualifiedNameProvider to a concrete instance that is used to compute all qualified names, including those in the other classes you mention. The computation of the Index (i.e., exported objects) can be time-consuming but once it's done, querying it is not slow at all.

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Re: Generic access for QualifiedName [message #787193 is a reply to message #786665]

Tue, 31 January 2012 08:58

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Hi Benjamin,

please note that qualified names are not necessarily unique thus
tracking changes that way may be ambigious.

You could try to obtain the resource service provider for the containing
resource of the EObject and ask that one for the IQualifiedNameProvider.

Regards,
Sebastian
--
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Am 30.01.12 18:33, schrieb Benjamin Schwertfeger:
> Hi,
> I try to write information of elements inside a xtext resource to the
> user and track changes while the file is edited. To identify the element
> I would like to use qualified names. Is there a way to access qualified
> names of elements in an open xtext editor without being part of the
> editor (Knowing the used module/Injector)?
>
> The Access and ProjectDescriptions could work if the elements are
> exported and the file is saved, but is perhaps slow and not my preferred
> way.
>
> Thanks,
> Benjamin

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Re: Generic access for QualifiedName [message #787425 is a reply to message #787193]

Tue, 31 January 2012 15:09

Benjamin Schwertfeger

Messages: 53
Registered: July 2009

Member

Thanks,
the resource service provider was exactly what I was looking for. The qualified name is only an additional tracking mechanism, but a very nice way to name the element.

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