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Mon, 20 August 2012 10:02

Eclipse User

Hi all,

At transformation, I need to assign a boolean variable to true.

isLoaded is EBoolean EAttribute.

at transformation i defined,

isLoaded<-true,

but this vale (true) cannot be find within the object.

I am just wondering, if this is a right way to assign a boolean attribute?

This is my rule:

rule rule_getDevice{
from
a: source!DeviceItem
to
p:target!Device
do{
p.name <- a.Name;
p.s7DeviceReference<-a.DeviceReference;
p.isSelectedWithinStep7<- a.IsSelected;
p.isLoaded<-false;
if (a.IsSelected = 'true'){
p.isLoaded<-true;
p.HeadModule<-a.ModuleList.ModuleItem->select(mi|mi.getSlotValue()='0')->collect(e|thisModule.rule_getHeadModule(e))->first();

p.Slot<-a.ModuleList.ModuleItem->select(mi|mi.getSlotValue()<>'0')->sortedBy(mi|mi.getSlotValue().toInteger())->collect(e|thisModule.rule_getSlot(e));

}
}

}

Thanks in advance!
Kosala

[Updated on: Mon, 20 August 2012 10:39] by Moderator

Re: EBoolean [message #902826 is a reply to message #902804]

Mon, 20 August 2012 12:00

Eclipse User

Hi Kosala,

I found this example in ATL wiki:

t : ClassDiagram!Attribute (
          name <- s.name,
          owner <- s.owner,
          isPrivate <- true,
          type <- s.type

So, I think your code is right, could you post the error that you're getting?

Re: EBoolean [message #902911 is a reply to message #902826]

Tue, 21 August 2012 02:34

Eclipse User

Hi Fernanda,

Thanks for your response. I do not get any error, but "isLoaded" attribute at transformation output object does not contain true. It is always false.

In this case "isLoaded" is set with transient property true (at the ecore model), since i do not need it to be persisted.

I do not understand why this transient field is not set from the atl transformation? How to slove this issue?

Really appriciate any advice.

Kosala

[Updated on: Tue, 21 August 2012 04:42] by Moderator

Re: EBoolean [message #902938 is a reply to message #902911]

Tue, 21 August 2012 06:28

Eclipse User

Hi all,

I use the following code to capture the transformed object.

public EObject getModelObjects() throws ATLCoreException, IOException {
getPackage_eINSTANCE().getClass();
//setting outputStream to inputStream
final PipedOutputStream outputStream = new PipedOutputStream();
PipedInputStream inputStream = new PipedInputStream(outputStream);

//read from outputStream
new Thread(new Runnable() {
public void run() {
try {

(new EMFExtractor()).extract(outModel, outputStream, null);

} catch (ATLCoreException e) {
e.printStackTrace();
}
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();

//load EObject from inputStream
XMIResourceImpl resource = new XMIResourceImpl();
resource.load(inputStream, new HashMap<Object,Object>());
EObject obj = resource.getContents().get(0);

// return EObject
return obj;
}

In here, outModel has proper values for "isLoaded" attribute, but return object does not.

Do you have any clue?

Thanks
Kosala

Re: EBoolean [message #902972 is a reply to message #902938]

Tue, 21 August 2012 09:20

Eclipse User

I found the issue.

The transformation is working, but the problem is transient variable does not support serialization.

I can find the right value of isLoaded field in outModel, but not in the return object.

here is my code:

protected IModel inModel;
protected IModel outModel;

public void loadModels(String inputModelPath) throws ATLCoreException {
EMFModelFactory factory = new EMFModelFactory();
IInjector injector = new EMFInjector();

IReferenceModel sourceMetamodel = factory.newReferenceModel();
injector.inject(sourceMetamodel, this.getSourceMetamodelPath());

IReferenceModel targetMetamodel = factory.newReferenceModel();
injector.inject(targetMetamodel, getPackage_eNS_URI());

this.inModel = factory.newModel(sourceMetamodel);
injector.inject(inModel, inputModelPath);

this.outModel = factory.newModel(targetMetamodel);
}

public EObject getModelObjects() throws ATLCoreException, IOException {
getPackage_eINSTANCE().getClass();

final PipedOutputStream outputStream = new PipedOutputStream();
PipedInputStream inputStream = new PipedInputStream(outputStream);

//read from outputStream
new Thread(new Runnable() {
public void run() {
try {

(new EMFExtractor()).extract(outModel, outputStream, null);

} catch (ATLCoreException e) {
e.printStackTrace();
}
try {
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();

//load EObject from inputStream
XMIResourceImpl resource = new XMIResourceImpl();
resource.load(inputStream, new HashMap<Object,Object>());
EObject obj = resource.getContents().get(0);

// return EObject
return obj;
}

any advice is appriciated.

Thanks
Kosala

Re: EBoolean [message #902975 is a reply to message #902972]

Tue, 21 August 2012 09:31

Eclipse User

You're serializing the model in a stream and then reload it from there so you lose the transient value...
Can't you extract to a resource directly instead of serializing ?

Re: EBoolean [message #902985 is a reply to message #902975]

Tue, 21 August 2012 10:10

Eclipse User

Hi Sylvain,

Yes you are right.

I am using IExtractor (org.eclipse.m2m.atl.core.IExtractor), which does not support extracting to a resource. Do you have any clue on a possible Extractor?

IExtractor extractor = new EMFExtractor();

ResourceSet resourceSet = new ResourceSetImpl();
resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap().put(Resource.Factory.Registry.DEFAULT_EXTENSION, new XMIResourceFactoryImpl());

resourceSet.getPackageRegistry().put(getPackage_eNS_URI(),getPackage_eINSTANCE());

extractor.extract(outModel,"filePath");

Thanks
Kosala

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