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How to get value of an EAttribute? [message #641340]

Thu, 25 November 2010 06:26

Bharani

Messages: 2
Registered: November 2010

Junior Member

Hi,

I'm very new to EMF. I've created my model code using the generate options. I've also created the diagram editor using GMF to create the diagrams.

I want to create my own custom java code using JET by accessing the instances of eclasses. I don't know how to traverse through the created objects to retrieve the value of eattributes that are set in the diagram.
For eg, I've access to PurhcaseOrderFactory and PurchaseOrderPackage. How to retrieve the details of purchase order. I want to get the instance of purchase order rather than the eclass instance. Can yoy post the sample code to achieve this.

regards,
Bharani

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Re: How to get value of an EAttribute? [message #641346 is a reply to message #641340]

Thu, 25 November 2010 07:00

Animesh Kumar

Messages: 79
Registered: September 2010
Location: Bangalore

Member

Hi Bharani,

By the question, do u mean that you wanted to retrieve all the Attributes within a class????

You can do that as follows:-

EList<EClassifier> eClassifiers = PurchaseOrderPackage.eINSTANCE.getEClassifiers();

The above code will retrieve you all the EClasses. Then you can retrieve the attributes from each EClass.

for (EClassifier eclass : eClassifiers) {
EList<EAttribute> eAllAttributes = ((EClass) eclass).getEAllAttributes();
EList<EAttribute> eLocalAttributesofTheClass = ((EClass) eclass).getEAttributes();
}

Regards,
Animesh

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Re: How to get value of an EAttribute? [message #641347 is a reply to message #641346]

Thu, 25 November 2010 07:05

Bharani

Messages: 2
Registered: November 2010

Junior Member

Hi Animesh,

I'm able to retrieve eattributes. what i want to get is the value of the attribute that is set through the editor(developed using GMF). For eg, the value of quantity, price from item object etc.

regards,
Bharani

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Re: How to get value of an EAttribute? [message #641363 is a reply to message #641347]

Thu, 25 November 2010 08:25

Jonas Helming

Messages: 699
Registered: July 2009

Senior Member

Hi,

eGet(eAttribute)

Cheers
Jonas

On 25.11.10 08:05, Bharani wrote:
> Hi Animesh,
>
> I'm able to retrieve eattributes. what i want to get is the value of the
> attribute that is set through the editor(developed using GMF). For eg,
> the value of quantity, price from item object etc.
>
> regards,
> Bharani

Report message to a moderator

Re: How to get value of an EAttribute? [message #641461 is a reply to message #641340]

Thu, 25 November 2010 15:03

Ed Merks

Messages: 33141
Registered: July 2009

Senior Member

Bharani,

Generally you'd load the resource and use getContents() to get at the
objects in the root of the resource. Is your model instance stored in
the same resource as the diagram (instances of the Notation model) or
are they in separate resources?

Bharani wrote:
> Hi,
>
> I'm very new to EMF. I've created my model code using the generate
> options. I've also created the diagram editor using GMF to create the
> diagrams.
> I want to create my own custom java code using JET by accessing the
> instances of eclasses. I don't know how to traverse through the
> created objects to retrieve the value of eattributes that are set in
> the diagram. For eg, I've access to PurhcaseOrderFactory and
> PurchaseOrderPackage. How to retrieve the details of purchase order. I
> want to get the instance of purchase order rather than the eclass
> instance. Can yoy post the sample code to achieve this.
>
> regards,
> Bharani

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: How to get value of an EAttribute? [message #641462 is a reply to message #641347]

Thu, 25 November 2010 15:06

Ed Merks

Messages: 33141
Registered: July 2009

Senior Member

Bharani,

Try to maintain a single thread for your one question. Given that you
have a generated API and are talking about wanting to use instances in a
template language, I imagine you should just be casting to your
generated API's instances and using the API methods to access all the
data. Using EObject.eGet is fine when writing purely generic code, but
my guess is that's not what you're doing...

Bharani wrote:
> Hi Animesh,
>
> I'm able to retrieve eattributes. what i want to get is the value of
> the attribute that is set through the editor(developed using GMF). For
> eg, the value of quantity, price from item object etc.
>
> regards,
> Bharani

Ed Merks
Professional Support: https://www.macromodeling.com/

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