Linhas de Produto de Software

Transcrição

1 Gerência de Variações em Requisitos 20 de outubro de 2009

2 Rain of fire PL

3 Mobile media PL

4 Feature model

5 Linhas de produto Abordagem sistemática para reúso de software. Redução dos custos e do tempo de lançamento de produtos pertencentes a um domínio específico. Melhoria da qualidade das aplicações. Cada artefato deve ser inspecionado e/ou testado um maior número de vezes!

6 Reúso a longo prazo... benefícios não aparecem de graça

7 Investimento inicial envolve: 1 Análise do domínio 2 Engenharia do domínio construir e testar os core assets relacionar artefatos com elementos do domínio (opcionalmente) implementar DSLs e generators

8 Core assets Artefatos reusáveis e configuráveis. Mas não apenas código fonte! Compreendem também: Requisitos (funcionais e não funcionais) Decisões de projeto e arquiteturais Casos de teste, scripts de teste Ajuda on-line, manuais dos usuários,...

9 Gerência de Variações em Requisitos

10 Diferentes abordagens Gráficas Model Templates MATA VML4RE Anotações Composições PLUC PLUSS MSVCM Textuais

11 Model Templates (exemplo) First aid worker transmits injury information of victim to System System update crisis record with the sent injury information. B <<not Medical Services>> A <<Medical Services>> First aid worker determines victims identity and comunicates it to system. System instructs first aind work to bring the victim to the most appropriate hospital <<Medical Services>> System requests victims medical history from all connected hospital resource systems. First aind worker notifies System that he has dropped the victim at the hospital. <<Medical Services>> Hospital resource system transmits victimis medical history to System. First aid worker informs System that he has completed his mission. <<Medical Services>> System notifies first aid worker of medical history of the victim. <<Medical Services>>

12 Model Templates (características) Não existe separação entre o que é comum e o que varia Modelo de configuração entrelaçado com as especificações

13 VML4RE (especificação base) SC07 Execute Rescue Mission First aid worker transmits injury information of victim to System System update crisis record with the sent injury information. ATV03 First aid worker determines victims identity and comunicates it to system. System instructs first aind work to bring the victim to the most appropriate hospital ATV04 First aind worker notifies System that he has dropped the victim at the hospital. First aid worker informs System that he has completed his mission.

14 VML4RE (especificação da variação) ADV01 Send Injury Data System requests victims medical history from all connected hospital resource systems. Hospital resource system transmits victimis medical history to System. System notifies first aid worker of medical history of the victim.

15 VML4RE (composições / configurações) concern CrisisManagement {... variant for MedicalServices { connect (SC07::ATV03, ADV01::ATV01) connect (ADV01::ATV03, SC07::ATV04) } variant for Log { // two "connects" for each mission.... }... }

16 VML4RE (características) Abordagem composicional Variações separadas das especificações base Modelo de configuração independente Não suporta quantificação (versão atual)

17 PLUSS (exemplo) Scenario: Execute rescue mission. Description: The intention of the First Aid Worker is... Related feature: Rescue Mission Flow of events Feature User Action System Response 1 - First Aid Worker transmits injury information of victims to System. System updates crisis record with the sent injury information. 2 Med. Services First Aid Worker determines victim s identity and communicates it to System. 3 Med. Services Hospital Resource System transmits victim s medical history information to System. System requests victim s medical history information from all connected Hospital Resource Systems. System notifies First Aid Worker of medical history of the victim relevant to his injury System instructs First Aid Worker to bring the victim to the most appropriate hospital. 5 - First Aid Worker notifies System that he - has dropped the victim at the hospital. 6 - First Aid Worker informs System that he has completed his mission. -

18 PLUSS (características) Abordagem anotativa Não existe separação entre o que é comum e o que varia Modelo de configuração entrelaçado com as especificações

19 MSVCM (especificação base) SC01 Scenario: Execute Rescue Mission. Description: The intention of the First Aid Worker is... Flow of events: Code User Action System Response SC07.1 First Aid Worker transmits injury information of victims to System. System updates crisis record with the sent injury SC System instructs First Aid Worker to bring the victim to the most appropriate hospital. SC07.3 First Aid Worker notifies System - that he is leaving the crisis site. SC07.4 First Aid Worker notifies System - that he has dropped off the victim at the hospital. SC07.5 First Aid Worker informs System that he has completed his mission. -

20 MSVCM (especificação da variação) ADV01 Advice: Medical Service advising Execute Rescue Mission. Description: Transmits injury information of victim to System. Code User Action System Response ADV01.1 First Aid Worker determines victim s identity and communicates it to System. System requests victim s medical history information from all connected Hospital Resource Systems. ADV01.2 Hospital Resource System transmits victim s medical history information to System. System notifies First Aid Worker of medical history of the victim relevant to his injury.

21 MSVCM (configurações) Feature Expression Transformations Car Crash select scenario SC01, SC03, SC04 Authentication System select scenario SC10 Rescue Mission select scenario SC07, SC08 Witness select scenario SC02 Remove Obstacle Mission select scenario SC09 Medical Services evaluate advice ADV01 Observe Mission select scenario SC06

22 MSVCM (características) Abordagem composicional Variações separadas das especificações base Modelo de configuração independente Suporta quantificação

23 Nesta parte da disciplina, investigaremos o uso das abordagens PLUSS e MSVCM para especificar variações em requisitos.

24 Para começar Estudar exemplos adicionais de PLUSS e MSVCM Rever a noção de extração e evolução de LPS Entender o suporte ferramental a ser usado na disciplina

25 Gerência de Variações em Requisitos 20 de outubro de 2009