Issue 19044: context variables (ifml-ftf)
Source: WebRatio Inc (Dr. Marco Brambilla, marco.brambilla(at)webratio.com)
Nature: Revision
Severity: Critical
Summary: Context: context variables are pointers to the corresponding element in the data model.
Resolution: Added ContextVariable, SimpleContextVariable, and DataContextVariable metaclasses and respective descriptions.
Revised Text: In Clause 8.3.14 Class Context, last sentence modified as:

Context is composed of one or more ContextDimensions and may comprise ContextVariables. 

And added new association end:
•	contextVariables [0..*]: ContextVariable – set of ContextVariables whose values are relevant for the current Context.


Added new Clauses as follows:

8.3.16Class ContextVariable
Abstract: No
Generalization:
•	NamedElement

Description
ContextVariable is a name-value pair that allows to store information associated to the current Context. It can be a SimpleContextVariable, storing a primitive type value, or a DataContextVariable, referencing a DataBinding.
Attributes
•	scope : ContextVariableScope – scope of the ContextVariable.
Association Ends
•	context [1] : Context – Context within which the ContextVariable is relevant.
8.3.18Class DataContextVariable
Abstract: No
Generalization:
•	ContextVariable
Description
DataContextVariable allows to associate a DataBinding to the current Context.
Association Ends
•	dataBinding [1]: DataBinding - Reference to the DomainModel concept used as ContextVariable.

8.3.44 Class SimpleContextVariable
Abstract: No
Generalization:
•	ValueSpecification
Description
SimpleContextVariable is a typed name-value pair that can be associated to the current Context. Allowed types are the primitive ones.

8.2.2Enumeration ContextVariableScope
Description
Enumeration specifying the different scope levels for ContextVariables.Literals
•	ApplicationScope: Scope of the ContextVariable is the application
•	SessionScope: Scope of the ContextVariable is the user session 
•	ViewContainerScope: Scope of the ContextVariable is the ViewContainer (for instance, the Web page or the window)


Added new association end in Clause 8.3.17 DataBinding:
•	dataContextVariable [0..*]: DataContextVariable – reference to the ContextVariable that makes use of the DataBinding.

Figure 13 replaced with this one:

 

Added new sentence at the end of Clause 8.1.9 Context:

ContextVariables can be associated to the Context to store primitive values (SimpleContextVariable) or objects (DataContextVariable) that store the state of the system in the current context. 


Actions taken:
October 30, 2013: received issue
July 15, 2014: closed issue
Discussion: 

End of Annotations:=====

m: webmaster@omg.org
Date: 30 Oct 2013 03:59:48 -0500
To: <issues@omg.org>
Subject: Issue/Bug Report

*******************************************************************************
Name:            Marco Brambilla
Employer:        WebRatio
mailFrom:        marco.brambilla@webratio.com
Terms_Agreement: I agree
Specification:   IFML
Section:         -
FormalNumber:    ptc/2013-03-08
Version:         1.0 Beta 1
Doc_Year:        2013
Doc_Month:       March
Doc_Day:         20
Page:            -
Title:           context variables
Nature:          Revision
Severity:        Minor
CODE:            3TMw8
B1:              Report Issue
Remote Name:     nat1.como.polimi.it
Remote User:     
HTTP User Agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0; MALNJS)
Time:            03:59 AM

Description:

Context: context variables are pointers to the corresponding element in the data model.