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Parser and models [message #650816]

Wed, 26 January 2011 17:06

chuck

Messages: 160
Registered: July 2010

Senior Member

In java class where I'm reading textual model I need to open some ecore models... When I try to open a file I receive an error concerning metamodel uri not found... How I can register metamodel file with uri?

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Re: Parser and models [message #650869 is a reply to message #650816]

Wed, 26 January 2011 23:22

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hello Chuck,
As said 1000 times before some more information in your posts would help.
-do you want to read .ecore files or some .mymetamodelsfileextension files.
-snippet of the code you use
-error message you get
. . .

Thanks, Christian

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

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Re: Parser and models [message #650921 is a reply to message #650869]

Thu, 27 January 2011 07:57

chuck

Messages: 160
Registered: July 2010

Senior Member

yes you're right Smile

i'm reading .mydsl models but i also need to read .ecore model... I followed this tutorial http://antonywilkins.blogspot.com/2009/08/xtext-spring-demo- part-2.html and is the line I receive error:

Resource modelecore=loadModelResource(myModelPath);

i receive - Package with uri 'http://myMMuri' not found...

where myMMuri is the metamodel to which is conforming my ecore model... i need to register metamodel and after read ecore model....the xtext model .mydsl reading works fine...

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Re: Parser and models [message #650924 is a reply to message #650921]

Thu, 27 January 2011 08:17

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

what about doing the same that Xtext does for you in the Generated StandaloneSetup for your stuff:

If you have java classes for your ecore:

something like

EPackage.Registry.INSTANCE.put(MyPackage.eNSURI, MyPackage.eInstance)

if you use dynamic emf http://wiki.eclipse.org/EMF/FAQ

~Christian

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

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Re: Parser and models [message #651725 is a reply to message #650924]

Tue, 01 February 2011 12:51

chuck

Messages: 160
Registered: July 2010

Senior Member

OK,,,my problem was the incorrect ecore model Smile

now i'm reading textual model and i have some crossreferences to external ecore model... i found that is an eproxy reference...but i don't how to access to right model element.

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Re: Parser and models [message #651727 is a reply to message #651725]

Tue, 01 February 2011 13:00

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi

i am just guessing

Quote:

now i'm reading textual model and i have some crossreferences to external ecore model... i found that is an eproxy reference...but i don't how to access to right model element.

So now you are Standalone and want to read the model file. Please not the the global scope standalone is by default all contoent of the resourceset so add all models (including the ones that contain the referenced stuff) to the resourceset.

~ Christian

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

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Re: Parser and models [message #651731 is a reply to message #651727]

Tue, 01 February 2011 13:11

chuck

Messages: 160
Registered: July 2010

Senior Member

yes...I read the file ecore loading resource....

but when i do that:

EClassifier elementLF=r.getMLF().getElementLF();
//InternalEObject element = (InternalEObject)elementLF;
System.out.println(element.getName());

i receive null....

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Re: Parser and models [message #651740 is a reply to message #651731]

Tue, 01 February 2011 13:16

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

i am still not sure what you are doing and where you geht the error? withing xtext, within ecore? please SET MORE CONTEXT.

~Christian

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

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Re: Parser and models [message #651757 is a reply to message #651740]

Tue, 01 February 2011 13:45

chuck

Messages: 160
Registered: July 2010

Senior Member

i'm reading textual xtext models...and during that operation i need to read ecore file in resourceset...

i loaded ecore model :
this.mod=(DynamicEObjectImpl)(TFile.getContents().get(0));

and after i try to read the first EClass of this model...
just that... printing that i saw that EclassImpl is eproxy.... and i don't know hot to access to real Eclass...

i hope that will be more clear... Neutral

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Re: Parser and models [message #651785 is a reply to message #651757]

Tue, 01 February 2011 15:40

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

Can you please set more context. e.g dummy grammar / dummy xtext model .....

Running sample code ...

~Christian

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

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Re: Parser and models [message #651796 is a reply to message #651785]

Tue, 01 February 2011 16:05

chuck

Messages: 160
Registered: July 2010

Senior Member

ok I try to reduce my grammar...

Rule:"rule" name=ID

"{"
mLeft=MLeft "..."

"}"
;
MLeft:"order" elLeft=[ecore::EClass] name=ID

in parser i would like to manipulate textual model and some core models...

public class ReadLangModelTest {

static {

LangStandaloneSetup.doSetup();
}

public static void main(String[] args) throws MigrationException {

//here i read mydsl models and it works fine...and i have MLeft element and i need to obtain Eclass in crossreference...

EClassifier elementLeft=element.getELeft();
InternalEObject element = (InternalEObject)elementSX;

System.out.println(elementSX.getName());

//here i receive null and i would receive eclass name in crossreference

}

it's ok now?

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Re: Parser and models [message #651801 is a reply to message #651796]

Tue, 01 February 2011 16:24

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Maybe i got it: what about if you'd post your questions like

I have a grammar like this

grammar org.xtext.example.mydsl.MyDsl with org.eclipse.xtext.common.Terminals

import "http://www.eclipse.org/emf/2002/Ecore" as ecore

generate myDsl "http://www.xtext.org/example/mydsl/MyDsl"

Model:
	elements+=Element*
;

Element:
	"element" name=ID "refs" ref=[ecore::EClass]
;

and an ecore like this

<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0"
    xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="test"
    nsURI="http://www.example.com/test" nsPrefix="test">
  <eClassifiers xsi:type="ecore:EClass" name="A"/>
  <eClassifiers xsi:type="ecore:EClass" name="B"/>
</ecore:EPackage>

and ref it from a model like this

element X refs A
element Y refs B

and i dead it programmatically

public class Main {

	public static void main(String[] args) {
		new EcoreSupport().preInvoke();
		MyDslStandaloneSetup.doSetup();
		ResourceSet rs = new ResourceSetImpl();
		Resource r1 = rs.getResource(URI.createURI("src/test.ecore"), true);
		Resource r2 = rs.getResource(URI.createURI("src/test.mydsl"), true);
		Model m = (Model) r2.getContents().get(0);
		for (Element e : m.getElements()) {
			System.out.println(e.getName() + " => " + e.getRef().getName());
		}
	}

}

and it works like a charm

~ Christian

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

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Re: Parser and models [message #651802 is a reply to message #651801]

Tue, 01 February 2011 16:30

chuck

Messages: 160
Registered: July 2010

Senior Member

the problem is similar...

when I try to print eclass without cast... i get that;
org.eclipse.emf.ecore.impl.EClassImpl@6bef4b2b (eProxyURI: src/model/m1.mydsl#xtextLink_::0.3.5.0.2::0::/2)...

and when i try to print the eclass name it's null.... °_°

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