Information missing for Attributes change operators

[Jefidev]

For the query evolution module, I am relying on the changeOperator syntax.

I started to work on the Attribute evolution and the information about the entity containing the attribute to evolve is missing.

I suggest to change this kind of syntax :
rename' 'attribute' attributeToRename=[Attribute|EString] 'as' newName=EString

By this :
rename' 'attribute' attributeToRename=[Attribute|EString] 'from' entity=[Entity|EString] 'as' newName=EString

or something equivalent.

[jdirocco]

Dear @Jefidev ,
RenameAttribute change operator doesn't contain the entity relation because it is redundant.
attributeToRename is contained in a Entity and you can access it by eContainmanet() operation/method. Why should we introduce this new field?

[Jefidev]

Hello,
I am working on a feature enabling user of TyphonQL to evolve their queries based on change operators like this :

changeOperators [ 
	rename entity Product as Item 
	rename attribute prod as product_id
]

// Insert queries here
from Product p select p where p.id == "1230",
from Product p, Stock s select p, s where p.id == "30",
from Person p select p.name,

The changeOperators could be copy-pasted from a .tml file by the programmer or written by him directly. Thus, this script doesn't rely especially on an .xmi.

If the change operators completely describe the changes this is not an issue but some information are missing.