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set the aliases of metamodel in standalone [message #1771552]

Sun, 27 August 2017 14:05

Eclipse User

Hi,

I use Java standalone to run my EOL program [1]. How can I set aliases of used metamodels?

[1]. https://eclipse.org/epsilon/examples/index.php?example=org.eclipse.epsilon.examples.standalone

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Re: set the aliases of metamodel in standalone [message #1771554 is a reply to message #1771552]

Sun, 27 August 2017 14:59

Eclipse User

Hi,

In Epsilon, aliases are a List<String> datatype. You can get the aliases of each model by calling the getAliases() method. Thus, you can add a new String to the List<String> collection returned by the getAliases() method to add a new alias to the model.

For example, if you have created the following two emf models

EmfModel myEmfModel1 = new EmfModel();
EmfModel myEmfModel2 = new EmfModel();

You can do the following to add a new alias named "IN_MM":

myEmfModel1.getAliases().add("IN_MM");
myEmfModel2.getAliases().add("IN_MM");

You can now query both models by executing your command on the alias (i.e., IN_MM! ... ) in your EOL program.

Hope that helps,
Thanos

[Updated on: Sun, 27 August 2017 15:00] by Moderator

Re: set the aliases of metamodel in standalone [message #1771566 is a reply to message #1771554]

Mon, 28 August 2017 03:44

Eclipse User

I want to specify metamodels and their aliases not aliases of models. In my EOL program, I navigated the Input and output "metamodels".

[Updated on: Mon, 28 August 2017 03:45] by Moderator

Re: set the aliases of metamodel in standalone [message #1771572 is a reply to message #1771566]

Mon, 28 August 2017 04:36

Eclipse User

Hi,

You can then use the EmfMetaModel class instead, located in the org.eclipse.epsilon.emc.emf package as well. As with EmfModel, EmfMetaModel also inherits the getAlias() method from the IModel interface so you can use it as suggested in my previous message.

Regards,
Thanos

Re: set the aliases of metamodel in standalone [message #1771592 is a reply to message #1771572]

Mon, 28 August 2017 08:10

Eclipse User

Thanks a million.

As another questions,
1. I want to create a model via code and pass the "workspace path" of that to createEmfModelByURI, such as bellow. How can I do it?

models.add(createEmfModelByURI("Ecore", "output.model", "http://www.eclipse.org/emf/2002/Ecore", true, true));

The code has an "Internal error: java.io.FileNotFoundException: output.model [No such file or directory]" since the output.model file does not created at all.

2. I have the path of ecore metamodel such as "/Users/apple/Desktop/runtime-EclipseApplication/Competition2TVApp/CompetitionDsl.ecore" in the metamodel variable. How can I set the METAMODEL_URI ?

String metamodel = "/Users/apple/Desktop/runtime-EclipseApplication/Competition2TVApp/CompetitionDsl.ecore";
EmfMetaModel emfMetaModel = new EmfMetaModel();
StringProperties properties = new StringProperties();
properties.put(EmfMetaModel.PROPERTY_METAMODEL_URI,
				?);

And also how can I register it?

String metamodel = "/Users/apple/Desktop/runtime-EclipseApplication/Competition2TVApp/CompetitionDsl.ecore";
EPackage.Registry.INSTANCE.put(?, ?);

Thanks for your time

[Updated on: Mon, 28 August 2017 14:12] by Moderator

Re: set the aliases of metamodel in standalone [message #1771658 is a reply to message #1771592]

Tue, 29 August 2017 04:08

Eclipse User

Hi,

Quote:

1. I want to create a model via code and pass the "workspace path" of that to createEmfModelByURI, such as bellow. How can I do it?
models.add(createEmfModelByURI("Ecore", "output.model", "http://www.eclipse.org/emf/2002/Ecore", true, true));

The model does not exist so, you should set the "read on load" argument to false. As a result Epsilon will not try to locate it when loading it. Setting the "store on disposal" argument to true (as you do) will dictate Epsilon to create the file (if it doesn't exist) and write the result to it. So, I believe that this should work:

models.add(createEmfModelByURI("Ecore", "output.model", "http://www.eclipse.org/emf/2002/Ecore", false, true));

Quote:

I have the path of ecore metamodel such as "/Users/apple/Desktop/runtime-EclipseApplication/Competition2TVApp/CompetitionDsl.ecore" in the metamodel variable. How can I set the METAMODEL_URI ?
String metamodel = "/Users/apple/Desktop/runtime-EclipseApplication/Competition2TVApp/CompetitionDsl.ecore";
EmfMetaModel emfMetaModel = new EmfMetaModel();
StringProperties properties = new StringProperties();
properties.put(EmfMetaModel.PROPERTY_METAMODEL_URI,
				?);

If you open your .ecore metamodel with the ECore tree editor and navigate to the root node of it you will find the URI of the metamodel in the properties view of Eclipse (property: Ns URI).

Quote:

And also how can I register it?

String metamodel = "/Users/apple/Desktop/runtime-EclipseApplication/Competition2TVApp/CompetitionDsl.ecore";
EPackage.Registry.INSTANCE.put(?, ?);

This SO post expalins how to do it.

Hope that helps,
Thanos

Re: set the aliases of metamodel in standalone [message #1771892 is a reply to message #1771658]

Thu, 31 August 2017 14:36

Eclipse User

Thank you very much indeed.
My problem was solved.

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