Eclipse Community Forums: EMF » How to get properties of an element when it is in the form of EObject or Object

Home » Modeling » EMF » How to get properties of an element when it is in the form of EObject or Object(How to get properties of an element when it is in the form of EObject or Object)

How to get properties of an element when it is in the form of EObject or Object [message #1804368]

Mon, 25 March 2019 02:40

Eclipse User

Hi,

How can I get the properties of an element when it is in the form of Object, without casting object to that particular element.

I have tried as follows but I didn't get value of property.

EClass local_class= ((EObject)value).eClass();
EList<EStructuralFeature> local_fieldL = local_class.getEStructuralFeatures();
if(local_fieldL != null || !local_fieldL.isEmpty()){
for (EStructuralFeature local_field : local_fieldL) {
System.out.println("Name : "+local_field.getName());
System.out.println("Value : "+ local_class.eGet(local_field));
}
}

where value=Object.

Re: How to get properties of an element when it is in the form of EObject or Object [message #1804371 is a reply to message #1804368]

Mon, 25 March 2019 03:23

Eclipse User

Note that getEStructuralFeatures never returns null because no multi-valued feature ever returns null. Your mistake is to call eGet on the EClass. You want to call eGet on the instance, i.e., ((EObject)value).eGet(local_field).

Re: How to get properties of an element when it is in the form of EObject or Object [message #1804379 is a reply to message #1804371]

Mon, 25 March 2019 04:48

Eclipse User

Hi Ed Merks,

thanks for the reply,

but if I call eGet() on instance it is giving implementation class i.e.

Name : dataConstrRules
Value : [autosar40.commonstructure.globalconstraints.impl.DataConstrRuleImpl@4c6ef122 (constrLevel: <unset>)]
Name : dataConstrRules
Value : [autosar40.commonstructure.globalconstraints.impl.DataConstrRuleImpl@4c6ef122 (constrLevel: <unset>)]
Name : compuContent
Value : autosar40.swcomponent.datatype.computationmethod.impl.CompuScalesImpl@5158b9dc
Name : compuDefaultValue
Value : null

but I am expecting like
name : ShortName
value : xyz

for (Limit Value Variation Point)
name : value
value : 10

[Updated on: Mon, 25 March 2019 05:28] by Moderator

Re: How to get properties of an element when it is in the form of EObject or Object [message #1804387 is a reply to message #1804379]

Mon, 25 March 2019 05:47

Eclipse User

I can make no comment about your model. What's displayed of course depends on what type of "value" you are processing.

Note however that you probably generally want to use getEAllStructureFeatures not getEStructuralFeatures so that you will also see features that are inherited.

Re: How to get properties of an element when it is in the form of EObject or Object [message #1804395 is a reply to message #1804387]

Mon, 25 March 2019 08:23

Eclipse User

Hi

autosar40.commonstructure.globalconstraints.impl.DataConstrRuleImpl@4c6ef122 is the instance class. If you want it to look pretty you need to implement DataConstrRuleImpl.toString().

If DataConstrRuleImpl is not your code or you do not want to change it you might exploit the XXXSwitch capability to implement a pretty printer.

Regards

Ed Willink

Re: How to get properties of an element when it is in the form of EObject or Object [message #1831970 is a reply to message #1804395]

Fri, 04 September 2020 01:43

Eclipse User

Hi @Ramesh
Did you get any solution to this problem ? I am facing a similar issue.
Could you please share any snippet which solves the above problem ?

Cheers,
Amar

Re: How to get properties of an element when it is in the form of EObject or Object [message #1831982 is a reply to message #1831970]

Fri, 04 September 2020 04:00

Eclipse User

I think you are starting multiple threads on multiple forums for the same question. This answer provides a snippet focused on your "name" question:

https://www.eclipse.org/forums/index.php/m/1831980/#msg_1831980

Previous Topic:	Textual to graphical or vice versa tools
Next Topic:	Retrieve the 'value' of any EObject instance

Goto Forum:

-=] Back to Top [=-

Current Time: Sat Jul 19 09:44:07 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter