Issue 5017: Section 4.1.4 -- clarification (uml-scheduling-ftf)
Source: Commissariat a l Energie Atomique-CEA (Dr. Sebastien Gerard, sebastien.gerard(at)cea.fr)
Nature: Uncategorized Issue
Severity: 
Summary: I do not well understand the differency between the concept of “Ressource Broker” and this one of “Access Control Policy”. As described in the sentence, it seems to me that it designates the same thing. Moreover if you attache a “Ressource broker” to one or more unprotected resources they become protected. It is the reason I propose to suppress this concept in the Figure 19.

Resolution: Additional explanatory text added in section 4.1.7
Revised Text: Revise the second sentence in section 4.1.7 to read thus: "In general, we distinguish between a number of different roles here:The resource broker, is an entity that is responsible for allocation and deallocation of a set of resource instances (or their services) to clients according to a specific access control policy. For example, a memory manager will allocate memory from a heap upon request from a client and also return it back into the heap once the client no longer needs it. The access control policy determines the amount of memory provided to individula clients, the prioritization of competing requests, etc.
The resource manager, on the other hand is responsible for creating and maintaining resources according to a resource control policy. For example, a buffer pool manager is responsible for creating a set of buffers from one or more chunks of heap memory. Once created and initialized, the resources are typically handed over to a resource broker. In most practical cases, the resource manager and the resource broker are the same entity.. However, since this is not always true the two concepts are modeled separately (they can be easily combined by designating the same entity as serving both purposes)."

Actions taken:
March 20, 2002: received issue
June 30, 2003: closed issue
Discussion: 
Needs to be explained: the broker is the entity that enforces a policy; this may be too subtle; revisit (Bran)

End of Annotations:=====
This is issue # 5017

Section 4.1.4 -- clarification

I do not well understand the differency between the concept or more
unprotected resources they become protected. It is the reason I
propose to suppress this concept in the Figure 19.
of