Transformation of Applicative Specifications into Imperative ...

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CHAPTER 10. EXAMPLES OF TRANSFORMATIONS believed to be correct according to Chapter 7, I_DATABASE1 is a correct development of A_DATABASE3. In order for the specification to be a correct development of A_DATABASE2, a transformed version of the pre-condition in the lookup function has to be added to I_DATABASE1. The resulting specification I_DATABASE2 can be found in Specification 10.5. Specification 10.5 – Concrete imperative specification of the database including pre-condition scheme I_DATABASE2 = class type Database = Key →m Data, Key, Data end variable database : Database value empty : Unit → write database Unit empty() ≡ database := [ ], insert : Key × Data → read database write database Unit insert(k, d) ≡ database := database † [ k ↦→ d ], remove : Key → read database write database Unit remove(k) ≡ database := database \ {k}, defined : Key → read database Bool defined(k) ≡ k ∈ dom database, lookup : Key ∼ → read database Data lookup(k) ≡ database(k) pre defined(k) As can be seen the specification resembles that of [Gro92, p. 147-148]. The only differences are the inclusion of some extra read database access 116
10.4. FURTHER DEVELOPMENT OF THE DATABASE SPECIFICATION descriptors in I_DATABASE2 and the fact that the specification in [Gro92, p. 147-148] is written using axioms. 10.4 Further Development of the Database Specification From this point the imperative specification of the database can be further developed into a final specification that can be translated into a program. As the specifications further on are within the imperative subset of RSL the development steps can be validated and in this way the whole development process from abstract applicative specification into final concrete imperative specification can be validated. Normally, the step from concrete applicative into concrete imperative is only informally verified, but using the transformer this step is automatically verified. 117
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Transformation of Applicative Speci
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Resumé RAISE udviklingsmetoden er
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CONTENTS 6.4.3 Transforming Value E
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CONTENTS 12.2.4 Interactive Transfo
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LIST OF FIGURES xvi
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CHAPTER 1. INTRODUCTION This stepwi
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CHAPTER 1. INTRODUCTION 1. Formulat
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CHAPTER 1. INTRODUCTION 1.7 Content
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CHAPTER 2. GENERAL IDEA end value e
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CHAPTER 2. GENERAL IDEA • In the
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CHAPTER 2. GENERAL IDEA value incre
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CHAPTER 3. TERMINOLOGY Expected Typ
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CHAPTER 3. TERMINOLOGY Example 3.5
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CHAPTER 3. TERMINOLOGY 18
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CHAPTER 4. CONSTRAINTS further deve
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CHAPTER 4. CONSTRAINTS of interest.
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CHAPTER 4. CONSTRAINTS 24
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CHAPTER 5. TRANSFORMABILITY scheme
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CHAPTER 5. TRANSFORMABILITY 28
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CHAPTER 6. TRANSFORMATIONS 6.2.1 Tr
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CHAPTER 6. TRANSFORMATIONS Example
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CHAPTER 6. TRANSFORMATIONS Applicat
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CHAPTER 6. TRANSFORMATIONS object A
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CHAPTER 6. TRANSFORMATIONS type T =
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CHAPTER 6. TRANSFORMATIONS where ge
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CHAPTER 6. TRANSFORMATIONS Ranged s
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CHAPTER 6. TRANSFORMATIONS ✄ end
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CHAPTER 6. TRANSFORMATIONS Value In
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CHAPTER 6. TRANSFORMATIONS ✄ sche
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CHAPTER 6. TRANSFORMATIONS A case e
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CHAPTER 6. TRANSFORMATIONS 6.4.4 Tr
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CHAPTER 7. CORRECTNESS OF TRANSFORM
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Page 150 and 151: BIBLIOGRAPHY [ST02] Donald Sannello
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APPENDIX C. FORMAL SPECIFICATIONS O
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APPENDIX D. SPECIFICATION OF TRANSF
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APPENDIX E. ANTLR GRAMMAR END = "en
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APPENDIX E. ANTLR GRAMMAR ; d = d e
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APPENDIX E. ANTLR GRAMMAR ; } ( com
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APPENDIX E. ANTLR GRAMMAR prod_bind
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APPENDIX E. ANTLR GRAMMAR ; | NAT {
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APPENDIX E. ANTLR GRAMMAR new RSLLi
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APPENDIX F. SOURCE CODE System . e
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APPENDIX F. SOURCE CODE public void
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APPENDIX F. SOURCE CODE StringRSLAs
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APPENDIX G. TEST RESULTS continued
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