A Rationale-based Model for Architecture Design Reasoning

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Once this file is generated, Netica can open it directly. A user would enhance the data in this file. The following data entry and graphics manipulation are probably necessary: • Reorganise the graph and position the AEs and ARs for better visibility • Assign prior and conditional probabilities to the nodes 4.4 Merging Enterprise Architect Graph with Netica After exporting the AREL model from the Enterprise Architect repository (in UML) into the Netica format, it is possible for the models in both notations to change. The design in the UML model might change because of design changes. For the Netica model, the probabilities and the positioning of the Netica model elements might be enhanced. As such, there is a need to merge the two models together to synchronise the changes. This can be achieved by using the Merge BBN button. The end result is an updated Netica file which has all the elements and relationships of the UML model, but preserves the positioning and the probabilities of the Netica model. The basic assumption of this function is that the elements and the relationships in the AREL model are defined by the Enterprise Architect repository. So if there are additions, deletions or modifications in the repository, it would be reflected in the merged Netica form. This function will prompt the user to enter the Netica file name which is to be merged with the UML model, this is shown in Figure 12. Figure 12 – Specify the Netica file to merge with When the filename is specified, user can use the Merge button to start the merging process. The end result will be stored in a file called ABC merge (20 July 2006(3- 11 PM)). 4.5 Create ADDG Graph Based on the AREL model which consists of AEs and ARs, an Architecture Design Decision Graph (ADDG) can be created. This is an UML graph created in the Enterprise Architect which only shows the relationships between the ARs and filter out all the AEs in the graph. The purpose of this tool is to highlight the relationships between architecture decisions. 235
To initiate the graph’s creation, click on the Create ADDG button. When the ADDG graph is successfully created in the Enterprise Architect repository, the following pop-up window will be displayed. Figure 13 – confirmation of ADDG creation The ADDG graph is created in the same repository under Use Case View, Use Case Model and ADDG Graph. 4.6 Delete ADDG Graph Since there can only be one ADDG graph at one time in the repository, the AREL tool provides the facility for an user to remove the graph. This can be done by using the Delete ADDG button. 4.7 Use another Enterprise Architect Repository If the user wants to specify another Enterprise Architect repository, one could use the Back button to navigate to the open model screen (see Figure 1) to open another UML model. 4.8 Exit the AREL tool This button ends the execution of the AREL tool. 236
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A Rationale-based Model for Archite
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maintenance. These techniques can h
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Declaration This thesis contains no
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2.2.6 DoD Architecture Framework .
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5.4.6 Risk assessment in architectu
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8.2 The architecture rationalisatio
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12.2 Contributions . . . . . . . .
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6.10 ≪AR≫ and ≪AAR≫ Stereot
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11.13A Process to Synchronise Chang
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5.13 Design Rationale Helps Evaluat
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that architecture design is highly
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1.2. Research motivations and resea
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1.2. Research motivations and resea
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1.4. Structure of the thesis the ch
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Part I Problem Analysis 10
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2.1. Industry practice of design ra
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2.2. Architecture frameworks and de
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Chapter 3 Related work in design ra
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3.2. Why do we need design rational
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3.2. Why do we need design rational
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3.3. Existing methods for capturing
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3.4. Other related studies 3.3.7 Qu
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3.4. Other related studies evolutio
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3.5. How well design rationale meth
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3.5. How well design rationale meth
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Chapter 4 Research methodology and
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4.1. Software engineering research
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4.2. The chosen research and valida
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Part II Architecture Design Rationa
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on a regular basis. Their inputs ha
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5.1. Architecture rationale in the
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5.2. Survey methodology data collec
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5.3. Survey findings experience). I
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5.3. Survey findings Table 5.1: Fre
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5.3. Survey findings Business Goals
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5.3. Survey findings 5.3.5 Document
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5.3. Survey findings Table 5.8 summ
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5.3. Survey findings We used Spearm
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5.3. Survey findings previous desig
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5.4. Discussion of findings Since t
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5.4. Discussion of findings or cons
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5.5. Limitations and use design rat
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Part III The Representation and App
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6.1. A conceptual model for design
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6.2. Architecture Rationale and Ele
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6.2. Architecture Rationale and Ele
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6.3. Architecture elements Figure 6
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6.4. Architecture rationale Figure
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6.4. Architecture rationale • ris
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6.4. Architecture rationale depicts
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6.5. The extended AREL To prevent c
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6.6. A UML representation of AREL a
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6.6. A UML representation of AREL a
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6.7. AREL usability AE by ≪AEsupe
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6.8. Summary The AREL model is exte
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7.1. The EFT system reasoning, a co
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7.1. The EFT system The processing
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7.1. The EFT system not chosen beca
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7.1. The EFT system Figure 7.5: Int
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7.1. The EFT system sequence checki
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7.1. The EFT system Figure 7.7: Dec
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7.1. The EFT system Therefore, in a
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7.1. The EFT system Figure 7.10: De
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7.2. An empirical study to validate
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7.3. Summary The case study is spec
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8.1. Background Based on these assu
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8.2. The architecture rationalisati
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8.3. Other applications of ARM As d
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8.3. Other applications of ARM Figu
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8.3. Other applications of ARM area
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Chapter 9 Architecture rationale an
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9.1. Background 9.1 Background In t
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9.2. Traceability of architecture r
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9.4. AREL and eAREL traceability ap
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Chapter 10 Architecture decision de
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10.1. Background 10.1.2 Introductio
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10.2. Building a BBN to represent a
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10.3. Reasoning about change impact
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Page 215 and 216: 11.2. Checking AREL models Figure 1
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Page 223 and 224: Chapter 12 Conclusions 12.1 Summary
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Page 233 and 234: BIBLIOGRAPHY [10] B. W. Boehm, Soft
Page 235 and 236: BIBLIOGRAPHY [37] A. Eden and R. Ka
Page 237 and 238: BIBLIOGRAPHY [62] J. D. Herbsleb an
Page 239 and 240: BIBLIOGRAPHY [89] N. Lassing, D. Ri
Page 241 and 242: BIBLIOGRAPHY [115] D. L. Parnas,
Page 243 and 244: BIBLIOGRAPHY [142] Z. Simsek and J.
Page 245 and 246: BIBLIOGRAPHY [167] W. F. Tichy, N.
Page 247 and 248: Appendix A AREL Tool User Manual 1
Page 249 and 250: 4.1 AREL Check Model When the Check
Page 251 and 252: 4.2 AREL Model Tracing AREL model t
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Page 257 and 258: onto the diagram 14 Assign values t
Page 259 and 260: Useful Definitions The following ar
Page 261 and 262: ) Some projects only c) Not at all
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Page 265 and 266: Complaint Procedure If you have any
Page 267 and 268: Privacy Protection Only investigato
Page 269 and 270: B. Exploring design reasoning. 1. W
Page 271 and 272: 3. Why does the system use asynchro
Page 273 and 274: C. General Comments on AREL Modelli
Page 275: IEEE Computer Society Press. A. Tan
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