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How to: list all visible packages from Project [message #1426935]

Fri, 19 September 2014 12:52

Simon Sperl

Messages: 21
Registered: May 2014

Junior Member

I have an example project structure:

IProject A
  a.dsl
    package a
    package a.a.a

IProject C
  references A
  cfile.file
    "a is green"
    "a.a.a is yellow"

I now want to check for entries in cfile.file if a and a.a.a exist/ are in the "scope of C".

but the classical way:

URI resourceURI = //cfile.file URI

IResourceDescriptions rds = rdp.getResourceDescriptions( someResourceSet);
IResourceDescription rd = rds.getResourceDescription(resourceURI);
List<IContainer> vis = cm.getVisibleContainers(rd, rds);

rds.getResourceDescription(resourceURI); always returns null since cfile.file exports no ResourceDescriptions/ is no dsl file (i guess).

How do I do that? (..I do not want to loadResource everything)

[Updated on: Fri, 19 September 2014 13:36]

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Re: How to: list all visible packages from Project [message #1426947 is a reply to message #1426935]

Fri, 19 September 2014 13:13

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi package is a thing that dos not exist in the xtext world by default. But maybe what you actually want to do is the have a look at the eobjectdescriptions or the resoucesdescriptiond in the xtext index. From your snippet you are almost there. You can query the container for both

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: How to: list all visible packages from Project [message #1426959 is a reply to message #1426947]

Fri, 19 September 2014 13:30

Simon Sperl

Messages: 21
Registered: May 2014

Junior Member

Ah yes, just mentally replace package with a random EObject Smile

My problem is that ResourceDescriptions.getResourceDescription( URIof("cfile.file") ) returns null, which then prevents me from using getVisibleContainers.

if "cfile" were of ".dsl" I can do it no problem with the eobjectdescriptions, but since it isn't I'm stumped.

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Re: How to: list all visible packages from Project [message #1426963 is a reply to message #1426959]

Fri, 19 September 2014 13:38

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi the the Uri is not correct it. Have a look at allresourcedescrptions in i Ressource de script ins.

The uri should be platform:/resource/project/path/file.extension

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: How to: list all visible packages from Project [message #1426977 is a reply to message #1426963]

Fri, 19 September 2014 14:01

Simon Sperl

Messages: 21
Registered: May 2014

Junior Member

Ty but sry, I just checked the uris are in that form (and exist).

the problem is that the
resourceDescriptionMap of ResourceDescriptions just does not contain an entry for
"platform:/resource/C/cfile.file" (since cfile.file is never parsed it is just a dumb textfile and (pretty sensibly) so never generates eobjectdescriptions)

I just don't know how to get all EObjectDescriptions of a single Project, if I have that I am happy.

[Updated on: Fri, 19 September 2014 14:01]

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Re: How to: list all visible packages from Project [message #1427045 is a reply to message #1426977]

Fri, 19 September 2014 16:05

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

hi,

xtext only indexes stuff that have a iresourceserviceprovider. this is by default all xtext languages + ecore. if file is not a dsl file this way wont work.
as i said: package is not a xtext concept.

maybe you want to do this using eclipse resource means (iresource/iproject/ifile - not xtext related)

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: How to: list all visible packages from Project [message #1427427 is a reply to message #1427045]

Sat, 20 September 2014 06:30

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

p.s. you may digg into

org.eclipse.xtext.ui.containers.AbstractAllContainersState.getVisibleContainerHandles(String)

this is basically what

org.eclipse.xtext.resource.containers.StateBasedContainerManager.getVisibleContainers(IResourceDescription, IResourceDescriptions)

does

some debugging may show you what actually happens.

the real question i have is: why do you NOT have a start resource?

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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