Linking Goal-Oriented Requirements and Model-Driven Development - Intentional Perspectives on Information Systems Engineering - page 265

Ta b l e 3 OO-method requirements metamodel and integration metamodel mappings

OO-method req.
element

OO-method req.
element I.M. element I.M. element

Node Node Resource Resource

.model .model .kind .kind

.name .name .providedBy .providedBy.task

.boundary .boundary .requiredBy .requiredBy.task

OOmReqModel OOmReqModel .producedBy .producedBy

.name .name Task Task

.ownedNode .ownedNode .provides .provides.resource

Actor Actor .requires .requires.resource

.element .element

2. The mapping between the MDD requirement metamodel and the Integration
Metamodel. Table 3 shows the mapping obtained for the linking example.

Finally, the OO-Method class model presented in Fig. 12 is obtained from the
example i ∗ model that is extended with the generated UML profile. In the extended
i ∗ model (see Fig. 12) , we considered the resource Work Request as a physical entity
produced by the task To Present Work Request .
The generation of the OO-Method class model is performed by means of model-
to-model transformation rules that are defined according to the interchange proposal
presented in [13] , which is driven by the metamodel mappings presented in Tables 2
and 3, and from the transformation guidelines presented in Table 1.
Figure 12 shows that the i ∗ actors are transformed into classes. The same
occurs for the resource Work Request since it is a physical entity. The agent
relationships are also represented to indicate the permissions that the classes
CandidateEmployee and Employer (generated from the corresponding i ∗ actors)

<<Actor>>

Extended Example i* Model <<Actor>>

Candidate
Employee

Employer

kind = physical
producedBy = To Present Work Request

A Work
Request to
be Processed

Work
Opportunity

<<Task>> <<RequiresLink>>

<<ProvidesLink>> <<Resource>> <<Task>>

To Present
Work Request

To Process
Work Request

Work
Request

Generated OO-Method Class Model

CandidateEmployee WorkRequest Employer

<agent>

<agent>

<new> createInstance() <new> toPresentWorkRequest()

toProcessWorkRequest()

<new> createInstance()

Fig. 12 Extended example i ∗ model and the OO-method class model generated