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How to work with mydsl from java? [message #1460426]

Mon, 03 November 2014 14:58

Marko Markovic

Messages: 35
Registered: August 2014

Member

Hi,

I have example.mydsl and Inferr which transform it to java. I would like to write other java class with main method and read example.mydsl in main method and I want to write in main method where I want to save generated java file from example.mydsl.

Something like this:

public class Test {
	public static void main(String[] args) {
		read(example.mydsl);
		saveGeneratedFileTo(url..)
	}
}

Is it possible?

Thanks in advance,

Marko

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Re: How to work with mydsl from java? [message #1460443 is a reply to message #1460426]

Mon, 03 November 2014 15:20

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

for the first part

https://wiki.eclipse.org/Xtext/FAQ#How_do_I_load_my_model_in_a_standalone_Java_application.C2.A0.3F

for the seccond part: obtain an igenerator and call it.

you may adapt the generator fragment in the workflow to generate a java main

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

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Re: How to work with mydsl from java? [message #1462772 is a reply to message #1460443]

Wed, 05 November 2014 23:27

Marko Markovic

Messages: 35
Registered: August 2014

Member

Thak you Christian,
I did next:

package pakett;


import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.ui.internal.Model;
import org.eclipse.xtext.generator.IGenerator;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.resource.XtextResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceImpl;

import com.google.inject.Injector;
import com.vps.java.ServerStandaloneSetup;
import com.vps.java.generator.ServerGenerator;
import com.vps.java.jvmmodel.ServerJvmModelGenerator;

import org.eclipse.xtext.generator.IFileSystemAccess;

public class Test {

	public static void main(String[] args) {		
		
		new org.eclipse.emf.mwe.utils.StandaloneSetup().setPlatformUri("../");
		Injector injector = new ServerStandaloneSetup().createInjectorAndDoEMFRegistration();
		XtextResourceSet resourceSet = injector.getInstance(XtextResourceSet.class);
		resourceSet.addLoadOption(XtextResource.OPTION_RESOLVE_ALL, Boolean.TRUE);
		Resource resource = resourceSet.getResource(URI.createURI("platform:/resource/Probaaa/src/pakett/test.server"), true);
		Model model = (Model)resource.getContents().get(0);

		ServerGenerator gen = new ServerGenerator();
	}

}

but got next error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/emf/mwe/core/ConfigurationException
	at pakett.Test.main(Test.java:23)
Caused by: java.lang.ClassNotFoundException: org.eclipse.emf.mwe.core.ConfigurationException
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 1 more

Parameter in setPlatformUri("../") is not good but I tried a lot path but always got error.

Do yuo know what is problem and what should I do next?

Thank you very much,
Marko

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Re: How to work with mydsl from java? [message #1463069 is a reply to message #1462772]

Thu, 06 November 2014 07:15

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

if you use file uris you wont need the platform uri stuff.
never the less a NoClassDefFoundError should be clear
looks like you are missing the plugin org.eclipse.emf.mwe.core

p.s. how to you call the java main?

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

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Re: How to work with mydsl from java? [message #1463754 is a reply to message #1463069]

Thu, 06 November 2014 22:22

Marko Markovic

Messages: 35
Registered: August 2014

Member

Hi,

I create java class with main method in java project in Eclipse and included all required plugins. I run this class with right click->Run As->Java Application and have error which I mentioned in a previous post.
I still do not know how to solve the problem.
Thank you Christian,

Best regards,
Marko

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Re: How to work with mydsl from java? [message #1463781 is a reply to message #1463754]

Thu, 06 November 2014 23:00

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

am not sure what you exactly did

(1) create a xtext project using the wizard
(2) create main file
(3) run it once from eclipse
(4) use the export -> java -> runnable jar file wizard.

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

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Re: How to work with mydsl from java? [message #1469235 is a reply to message #1463781]

Tue, 11 November 2014 12:20

Marko Markovic

Messages: 35
Registered: August 2014

Member

Thank you Christian, it works now.

I have other question,
Is Xtext team maybe plannig to develope Xtext for other language, not only java with Xbase, (javascript or python or any other)?

Best regards,

Marko

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