Issue 18365: Objects with cyclic references cannot be converted to string representations (fuml-rtf)
Source: Model Driven Solutions (Mr. Ed Seidewitz, ed-s(at)modeldriven.com)
Nature: Uncategorized Issue
Severity: 
Summary: Specification: Semantics of a Foundational Subset for Executable UML Models (fUML), v1.1, RTF Beta (ptc/2012-10-18)
Subclause: 8.3.2.2.2 CompundValue

 

The CompoundValue::toString operation calls toString on each value of each featureValue of a compound value. If one of these values is a reference then Reference::toString operation calls toString on the referenced object. Thus, if two or more objects cyclically reference each other, calling toString on any one of them will result in an infinite recursion.

 


Resolution: Update CompoundValue::toString

Agreed. If the feature value is a reference, then it is sufficient to show the object ID and list the names of the types of the object.
Revised Text: In 8.3.2.2.2 CompoundValue, in the toString operation, in the nested while statement
	while (j <= featureValue.values.size()) {
		buffer = buffer + " "
				+ featureValue.values.getValue(j - 1).toString();
		j = j + 1;
	}

replace the first statement in the loop with
		Value value = featureValue.values.getValue(j - 1);
		if (value instanceof Reference) {
			Object_ object = ((Reference)value).referent;
			buffer = buffer + " Reference to (" + object.objectId() + ":";
			types = object.getTypes();
			int n = 1;
			while (n <= types.size()) {
				buffer = buffer + " " + types.getValue(n - 1).name;
				n = n + 1;
			}
			buffer = buffer + ")";
		} else {
			buffer = buffer + " " + value.toString();
		}
Actions taken:
January 5, 2013: received issue
October 8, 2015: Resolved
December 22, 2015: closed issue
Discussion: 

End of Annotations:=====

m: Ed Seidewitz <ed-s@modeldriven.com>
To: "issues@omg.org" <issues@omg.org>
Date: Sat, 5 Jan 2013 15:36:49 -0500
Subject: Objects with cyclic references cannot be converted to string
 representations
Thread-Topic: Objects with cyclic references cannot be converted to string
 representations
Thread-Index: Ac3rhBweRwePdaeGTrGcOifpEkODPQ==
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Specification: Semantics of a Foundational Subset for Executable UML Models (fUML), v1.1, RTF Beta (ptc/2012-10-18)
Subclause: 8.3.2.2.2 CompundValue

 

The CompoundValue::toString operation calls toString on each value of each featureValue of a compound value. If one of these values is a reference then Reference::toString operation calls toString on the referenced object. Thus, if two or more objects cyclically reference each other, calling toString on any one of them will result in an infinite recursion.