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Missing xmi file. What is it? Where should it come from? [message #1092094]

Thu, 22 August 2013 10:22

Thomas Goossens

Messages: 32
Registered: August 2013

Member

Based on the following topic (I want to avoid reviving an old thread)
http://www.eclipse.org/forums/index.php/t/488360/

Hi,

I got exactly the same error. I checked all my xtext projects and none have an *.xmi .
How come that in eclipse everything runs fine but my standalone project fails in this manner?

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Re: Missing xmi file. What is it? Where should it come from? [message #1092102 is a reply to message #1092094]

Thu, 22 August 2013 10:26

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi are the xmis in the class path? How do you create the jar? Are
there any warnings on your project?

--
Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext at itemis dot de

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

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Re: Missing xmi file. What is it? Where should it come from? [message #1092110 is a reply to message #1092102]

Thu, 22 August 2013 10:37

Thomas Goossens

Messages: 32
Registered: August 2013

Member

Hi. Thanks again for quick reply! (And sorry for my incompleteness)

Quote:

are the xmis in the class path?

Caused by: org.eclipse.emf.common.util.WrappedException: org.eclipse.xtext.resource.ClasspathUriResolutionException: org.eclipse.xtext.resource.FileNotFoundOnClasspathException: Couldn't find resource on classpath. URI was 'classpath:/ast/AstLang.xmi'

Quote:

How do you create the jar?

I use a gradle script (based on this: https://github.com/jasonparekh/gradle-xtend-example/blob/master/build.gradle)

- first I compile the xtend sources
- then I compile the java sources
- then I use the maven plugin to create a jar (and the corresponding poms) which i publish on my repo
- then I created a new java project (not in eclipse) with a gradle script expressing the dependency on my jar (the one I just published to my repo)
- then I build that new java project (using gradle) it downloads all (transitive) dependencies succesfully
- then I run the main class of the project (using gradle) which spits out the the stacktrace above

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Re: Missing xmi file. What is it? Where should it come from? [message #1092120 is a reply to message #1092110]

Thu, 22 August 2013 11:00

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

did you open the jat file? is the xmi there or is it not?

- do you do any cleans?
- how do you run the workflow? (if at all)
- make sur you package xmis/ecores/genmodels from src-gen/** too

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

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Re: Missing xmi file. What is it? Where should it come from? [message #1092185 is a reply to message #1092120]

Thu, 22 August 2013 12:32

Thomas Goossens

Messages: 32
Registered: August 2013

Member

" make sur you package xmis/ecores/genmodels from src-gen/** too"

A major thing I missed. Everything works now. There are still no xmi's though?

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Re: Missing xmi file. What is it? Where should it come from? [message #1092189 is a reply to message #1092185]

Thu, 22 August 2013 12:39

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

no idea ...

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

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Re: Missing xmi file. What is it? Where should it come from? [message #1092190 is a reply to message #1092189]

Thu, 22 August 2013 12:39

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

P:S: newer versions of Xtext have a binary version of the xmi (*.xtextbin if i remember correct)

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

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Re: Missing xmi file. What is it? Where should it come from? [message #1092239 is a reply to message #1092190]

Thu, 22 August 2013 13:59

Thomas Goossens

Messages: 32
Registered: August 2013

Member

That explains everything. Thanks a lot!

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Re: Missing xmi file. What is it? Where should it come from? [message #1436980 is a reply to message #1092239]

Fri, 03 October 2014 18:14

Todd Jonker

Messages: 2
Registered: July 2009

Junior Member

This is just the most recent issue that's hit me with the same root cause: Xtext's generated dependency information doesn't properly constrain the minimum-required plugin versions.

I need to support users running Eclipse back to 4.2, but could really use newer Xtext features. I've had no end of hard-to-debug compatibility problems due to such dependency mismatches, and its stretching my faith that I'm going to be able to keep my plugin running over time as Xtext continues to evolve.

In my situation I hit this XMI problem by generating a DSL using Eclipse 4.3 and Xtext 2.4.3, then attempting to load the resulting feature into stock Eclipse 4.2, which only has Xtext 2.3 when apparently 2.4 is necessary to successfully load the plugins.

Why doesn't Xtext generate constrained dependency declarations so that the installation process detects this and forbids installation (unless Xtext is updated)?

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Re: Missing xmi file. What is it? Where should it come from? [message #1437030 is a reply to message #1436980]

Fri, 03 October 2014 20:03

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

if you consider this as missing feature feel free to file an enhancement request into bugzilla

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

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Re: Missing xmi file. What is it? Where should it come from? [message #1437071 is a reply to message #1436980]

Fri, 03 October 2014 21:26

Sebastian Zarnekow

Messages: 3118
Registered: July 2009

Senior Member

Am 03.10.14 20:14, schrieb Todd Jonker:
> Why doesn't Xtext generate constrained dependency declarations so that
> the installation process detects this and forbids installation (unless
> Xtext is updated)?

Hi Todd,

these constraints cannot be inferred during code generation. If Xtext
would generate a constraint to only allow the current version, you'd
have to make a new release of your DSL if a new Xtext version is
released even though your lang may work perfectly well with the newer
Xtext. You'd have to add the constraints manually to your manifest.mf
files or feature.xmls. Usually they can be created automatically by your
build tool if you want to go with strict constraints. But that is
definitely your decision and nothing the framework can do for you and
all other clients in a proper way.

Regards,
Sebastian
--
Looking for professional support for Xtext, Xtend or Eclipse Modeling?
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Re: Missing xmi file. What is it? Where should it come from? [message #1437273 is a reply to message #1436980]

Sat, 04 October 2014 05:06

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

Hi

If you want to go back that far (2.3 rather than 2.3.1) you need to
handle the xmi/xtextbin evolution.

For Eclipse OCL, I use xtextbin for the grammar and so need to backport
BinaryGrammarResourceFactoryImpl. See

org.eclipse.ocl.examples.xtext.base.services.CompatibilityGrammarProvider

and its uses.

Regards

Ed Willink

On 03/10/2014 20:14, Todd Jonker wrote:
> This is just the most recent issue that's hit me with the same root
> cause: Xtext's generated dependency information doesn't properly
> constrain the minimum-required plugin versions.
>
> I need to support users running Eclipse back to 4.2, but could really
> use newer Xtext features. I've had no end of hard-to-debug compatibility
> problems due to such dependency mismatches, and its stretching my faith
> that I'm going to be able to keep my plugin running over time as Xtext
> continues to evolve.
>
> In my situation I hit this XMI problem by generating a DSL using Eclipse
> 4.3 and Xtext 2.4.3, then attempting to load the resulting feature into
> stock Eclipse 4.2, which only has Xtext 2.3 when apparently 2.4 is
> necessary to successfully load the plugins.
>
> Why doesn't Xtext generate constrained dependency declarations so that
> the installation process detects this and forbids installation (unless
> Xtext is updated)?

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Re: Missing xmi file. What is it? Where should it come from? [message #1437280 is a reply to message #1437030]

Sat, 04 October 2014 05:24

Ed Willink

Messages: 7655
Registered: July 2009

Senior Member

On 03/10/2014 22:03, Christian Dietrich wrote:
> if you consider this as missing feature feel free to file an enhancement
> request into bugzilla

Since the missing *.xmi/*.xtextbin support is an Xtext backporting issue
independent of other Eclipse plugins, it might make sense for the
BinaryGrammarResourceFactoryImpl support to be in the auto-generated
code rather than the run-time. It would then just work.

Regards

Ed Willink

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Re: Missing xmi file. What is it? Where should it come from? [message #1727945 is a reply to message #1437280]

Tue, 29 March 2016 16:24

David Pace

Messages: 19
Registered: March 2013

Junior Member

I had this problem in conjunction with a Maven environment. The *.xtextbin file was not packaged into the JAR. The solution is to add this to the POM:

<resources>
  <resource>
    <directory>src/generated/path/to/package</directory>
      <includes>
         <include>myDSL.xtextbin</include>
      </includes>
      <targetPath>target/package</targetPath>
  </resource>
</resources>

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