Eclipse Community Forums: Epsilon

Help

Home

Home » Modeling » Epsilon » EOL and Flock(calling Java class in Epsilon Flock)

Show: Today's Messages :: Show Polls :: Message Navigator

EOL and Flock [message #1061169]

Thu, 30 May 2013 11:04

Amanuel Koshima

Messages: 6
Registered: October 2011

Junior Member

Dear Dimitris,

I want to call a Java calss from Flock migration script ( for example, blabla.mig). Could it be possible to do that?
My main idea is to get the EcoreUtil and some other java classes I define locally and call them in Flock.

For example, to assign UUIDs for each newly creatd model element using XMLResource and EcoreUtil.generateUUID()

-- other codes

migrate Course {
var assistant = new Migrated!Assistant();
var emfTool = new Native("org.eclipse.epsilon.emc.emf.tools.EmfTool");
var ecoreUtil = emfTool.ecoreUtil;
migrated.assistant = assistant
assistant.eResource().setID(assistant,ecoreUtil.generateUUID());
--other codes
}

or

migrate Course{
var assistant = new Migrated!Assistant();
migrated.assistant = assistant
var genUUID = new Native("university.utils.UUIDGenerator");
assistant.eResource().setID(assistant,genUUID.getUUID());

--other codes
}

I have followed the instruction and create a local class called emf.example.epsilon.test.GenerateUUID and followed the instruction given on
http://www.eclipse.org/epsilon/doc/articles/call-java-from-epsilon/ and http://www.eclipse.org/epsilon/examples/index.php?example=org.eclipse.epsilon.examples.clone

but I was not sussful. What should I do to call this classes while migrating the model?

Kind Regards,
Amanuel

Attachment: EOL_Flock.zip
(Size: 141.08KB, Downloaded 158 times)

Report message to a moderator

Re: EOL and Flock [message #1061215 is a reply to message #1061169]

Thu, 30 May 2013 14:45

Antonio Garcia-Dominguez

Messages: 594
Registered: January 2010
Location: Birmingham, UK

Senior Member

Could you please elaborate on how it was not successful? The error message and/or stack trace from Eclipse would be a big help.

Report message to a moderator

Re: EOL and Flock [message #1061217 is a reply to message #1061215]

Thu, 30 May 2013 14:52

Amanuel Koshima

Messages: 6
Registered: October 2011

Junior Member

Hi Antonio,

I have attached the traces and both metamodel and model projects (i.e. the small example) that I have tried with in my first post (see the attachment file).

Report message to a moderator

Re: EOL and Flock [message #1061397 is a reply to message #1061217]

Fri, 31 May 2013 13:12

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Hi Amanuel,

You'll need to go to the Runtime tab of your MANIFEST.MF and add university.utils to the list of exported packages.

Cheers,
Dimitris

Report message to a moderator

Re: EOL and Flock [message #1061471 is a reply to message #1061397]

Fri, 31 May 2013 19:49

Amanuel Koshima

Messages: 6
Registered: October 2011

Junior Member

Dear Dimitris,

I have added university.utils to the list of exported packages, but I still have the same error. The error trace is the following:

Caused by: Type 'university.utils.UUIDGenerator' not found (bundleentry://680.fwk27196165/model/migrationStrategy.mig@2:27)
at org.eclipse.epsilon.eol.types.EolNativeType.<init>(EolNativeType.java:37)
at org.eclipse.epsilon.eol.execute.TypeExecutor.execute(TypeExecutor.java:75)
at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeAST(ExecutorFactory.java:226)
at org.eclipse.epsilon.eol.execute.NewExecutor.execute(NewExecutor.java:26)
at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeAST(ExecutorFactory.java:226)
at org.eclipse.epsilon.eol.execute.AssignExecutor.execute(AssignExecutor.java:48)
at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeAST(ExecutorFactory.java:226)
at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeAST(ExecutorFactory.java:196)
at org.eclipse.epsilon.eol.execute.StatementBlockExecutor.execute(StatementBlockExecutor.java:26)
at org.eclipse.epsilon.eol.execute.ExecutorFactory.executeAST(ExecutorFactory.java:226)
at org.eclipse.epsilon.flock.execution.EolExecutor.executeBlock(EolExecutor.java:42)
... 46 more

Report message to a moderator

Re: EOL and Flock [message #1061483 is a reply to message #1061471]

Fri, 31 May 2013 20:56

Dimitrios Kolovos

Messages: 1776
Registered: July 2009

Senior Member

Hi Amanuel,

I'm afraid you've hit a bug here. I've fixed it locally and will
commit/release a new interim version when I have a more reliable internet
connection (I'm currently on a train) - most probably tomorrow morning.

Cheers,
Dimitris

Report message to a moderator