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Reading attribute value from EObject programmatically [message #966908]

Thu, 01 November 2012 10:31

Peter Johnsen

Messages: 60
Registered: January 2012

Member

Hi,

I have an EObject of an EClass with an integer attribute named 'a'. Is is possible to
read the value for this attribute from the EObject, intuitively like this (pseudo code):

EObject o ... ;
EAttribute a = o.eClass.getAttribute( "a" );
int aValue = o.getValue( a );

I've searched the API, but couldn't find how to do this.

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Re: Reading attribute value from EObject programmatically [message #966925 is a reply to message #966908]

Thu, 01 November 2012 10:44

Ed Merks

Messages: 33133
Registered: July 2009

Senior Member

Peter,

You can use o.eGet(a).

On 01/11/2012 11:31 AM, Peter Johnsen wrote:
> Hi,
>
> I have an EObject of an EClass with an integer attribute named 'a'. Is
> is possible to
> read the value for this attribute from the EObject, intuitively like
> this (pseudo code):
>
> EObject o ... ;
> EAttribute a = o.eClass.getAttribute( "a" );
> int aValue = o.getValue( a );
>
> I've searched the API, but couldn't find how to do this.

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

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Re: Reading attribute value from EObject programmatically [message #966939 is a reply to message #966925]

Thu, 01 November 2012 11:00

Peter Johnsen

Messages: 60
Registered: January 2012

Member

Thanks for your prompt reply!

OK, but if I don't have the EAttribute object? That is, I only have the name of the attribute? Are there any EMF-ways to do this, or would I have to use reflection?

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Re: Reading attribute value from EObject programmatically [message #966956 is a reply to message #966939]

Thu, 01 November 2012 11:13

Ed Merks

Messages: 33133
Registered: July 2009

Senior Member

Peter,

You need the EStructuralFeature, but as you showed in your own code, you
already know how to get that from the EObject's eClass().

On 01/11/2012 12:00 PM, Peter Johnsen wrote:
> Thanks for your prompt reply!
>
> OK, but if I don't have the EAttribute object? That is, I only have
> the name of the attribute? Are there any EMF-ways to do this, or would
> I have to use reflection?

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

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