Issue 18721: RemoveStructuralFeatureValueAction: Removal of links does not consider provided input value (fuml-rtf)
Source: LieberLieber Software (Mrs. Tanja Mayerhofer, mayerhofer(at)big.tuwien.ac.at.)
Nature: Clarification
Severity: Minor
Summary: In the case a RemoveStructuralFeatureValueAction is used to remove a link, the provided input value is not taken into account but only the object owning the defined association end. However, the UML standard states: “If the feature is an association end, the semantics are the same as for destroying links, the participants of which are the object owning the structural feature and the value being removed.” Thus, only links between the provided object (object pin) and value (value pin) should be considered.


The following code could be a resolution to this issue:


public class RemoveStructuralFeatureValueActionActivation
                extends
                fUML.Semantics.Actions.IntermediateActions.WriteStructuralFeatureActionActivation {             
        
        public void doAction() {
                ...
                if (association != null) {
                        LinkList links = this.getMatchingLinks(association, feature, value);
                        
>>>                     if(inputValue != null) {
>>>                             Property oppositeEnd = this.getOppositeEnd(association, feature);
>>>                             LinkList linksMatchingInputValue = this.getMatchingLinks(association, oppositeEnd, inputValue);
>>>                             links = linksMatchingInputValue;
                        }
                        ...
        }
}
Resolution: 
Revised Text: 
Actions taken:
May 16, 2013: received issue
Discussion: 

End of Annotations:=====

m: webmaster@omg.org
Date: 16 May 2013 09:58:49 -0400
To: <issues@omg.org>
Subject: Issue/Bug Report
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*******************************************************************************
Name:            Tanja Mayerhofer
Employer:        Vienna University of Technology
mailFrom:        mayerhofer@big.tuwien.ac.at
Terms_Agreement: I agree
Specification:   Semantics of a Foundational Subset for  Executable UML Models (FUML)
Section:         8.6.3.2.12 RemoveStructuralFeatureValueActionActivation
FormalNumber:    ptc/2012-10-18
Version:         1.1
Doc_Year:        Year
Doc_Month:       Month
Doc_Day:         Day
Page:            306-309
Title:           RemoveStructuralFeatureValueAction: Removal of links does not consider provided input value
Nature:          Clarification
Severity:        Minor
CODE:            3TMw8
B1:              Report Issue
Remote Name:     hopper.ifs.tuwien.ac.at
Remote User:     
HTTP User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0
Time:            09:58 AM


Description:


In the case a RemoveStructuralFeatureValueAction is used to remove a link, the provided input value is not taken into account but only the object owning the defined association end. However, the UML standard states: .If the feature is an association end, the semantics are the same as for destroying links, the participants of which are the object owning the structural feature and the value being removed.. Thus, only links between the provided object (object pin) and value (value pin) should be considered.


The following code could be a resolution to this issue:


public class RemoveStructuralFeatureValueActionActivation
                extends
                fUML.Semantics.Actions.IntermediateActions.WriteStructuralFeatureActionActivation {             
        
        public void doAction() {
                ...
                if (association != null) {
                        LinkList links = this.getMatchingLinks(association, feature, value);
                        
>>>                     if(inputValue != null) {
>>>                             Property oppositeEnd = this.getOppositeEnd(association, feature);
>>>                             LinkList linksMatchingInputValue = this.getMatchingLinks(association, oppositeEnd, inputValue);
>>>                             links = linksMatchingInputValue;
                        }
                        ...
        }
}