Toward Structured Location of Features
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The document discusses techniques for providing a structured location of software features in code. It involves mapping features to relevant modules, analyzing relationships between modules, and exploring implementation structures of features. This includes identifying inter-feature and intra-feature structures as well as sub-feature structures. The techniques are demonstrated on an example application, and future work is outlined to improve scalability and evaluate effectiveness.
Toward Structured Location of Features
- 2. Feature Loca+on • Iden+fying correspondence between features and modules in source code Features List of Relevant Modules AccountBean.signon() Search Catalog, AccountBean() Sign On and Off, AccountService() LOCATION FEATURE Browse Categories, CatalogService() ...... Account.setPassword(String) AccountBean(AccountService, CatalogService) DaoConfig.getDaoManager() ...... CatalogService.getProductListByCategory(String) Developer
- 3. Mo+va+on • AHer features are located, there is s+ll a cogni6ve gap between features and modules Rela+onships Among Modules List of Relevant Modules a caller and its callee. AccountBean.signon() AccountBean() easier to understand at once? AccountService() invoked together in many CatalogService() 0mes based on a call pa6ern. Account.setPassword(String) also relevant to AccountBean(AccountService, CatalogService) ? "Browse Categories". DaoConfig.getDaoManager() ...... low priority? CatalogService.getProductListByCategory(String) Developer
- 4. Our Goal: Structured Loca+on • Stepwise explora+on of implementa+on structure of features Features Search Catalog, Browse Categories, Inter-‐Feature Structure STRUCTURED Sign On and Off, LOCATION ...... is a part of Intra-‐Feature Structure is composed of Sub-‐Feature structure is implemented by Developer Modules
- 5. Example: JPetStore • Virtual e-‐commerce system – Reference applica+on of Java EE Feature List f1: Browse Catalog f2: Search Catalog f3: Browse Categories f4: Browse Product Details f5: Browse Item Details f6: Update Shopping Cart f7: Sign On and Off f8: Update Account f9: Update Personaliza+on f10: Submit Order
- 6. Inter-‐Feature Structure • Concept lace obtained by formal concept analysis Feature List f1: Browse Catalog f4: Browse Product f1: Browse Catalog Details f2: Search Catalog f3: Browse Categories f4: Browse Product Details f3: Browse f7: Sign On and f5: Browse Item Details Categories Off f6: Update Shopping Cart f7: Sign On and Off f8: Update Account f9: Update Personaliza+on f10: Submit Order f6: Update f8: Update Account f2: Search f5: Browse Shopping Cart f9: Update Catalog Item Details f10: Submit Order Personaliza+on
- 7. Intra-‐Feature Structure • Call dependency graph obtained by dynamic analysis 1 156: 153: 162: 179: 92: 164: 314: 166: 97: 111: 168: 87: 86: 88: 172: 187: 311: 297: 174: 185: 176: 159: 178: 182: 188:
- 8. Sub-‐Feature Structure • Frequent call sequences of modules obtained by sequen+al pa^ern mining Create and ini+alize objects AccountService() DaoConfig.getDaoManager() 0 AccountBean() CatalogService() AccountBean(AccountService, CatalogService) Confirm whether the user is authen+cated 0 AccountBean.isAuthen+cated() Account.getName()
- 9. Overview of the Proposed Technique Preparing Scenarios Structure Visualiza6on ✔ ✔ ✔ ✔ Call Pa^ern Analyst R0: Scenario-‐ Scenarios Feature Mapping ✔ Applying FCA ✔ ✔ ✔ Feature-‐Specific Call Graph R1: Scenario-‐ Formal Module Mapping Concept Analysis Subject Dynamic Execu+on ✔ System Analysis Traces ✔ ✔ ✔ R2: Scenario-‐Call Observing Execu6on Dependency Mapping Concept Lace Sequen+al ✔ ✔ ✔ Pa^ern Mining ✔ R3: Scenario-‐Call Pa^ern Mining Call PaEerns Mapping
- 10. Conclusion Our'Goal:'Structured'Loca+on InterLFeature'Structure • Stepwise'explora+on'of'implementa+on' • Concept'lace'obtained'by'formal'concept' structure'of'features analysis Features Feature'List' f1:'Browse'Catalog' f4:'Browse'Product' Search'Catalog,' f1:'Browse'Catalog' Details' ''''Browse'Categories,' f2:'Search'Catalog' InterMFeature'Structure' STRUCTURED% Sign%On%and%Off,' f3:'Browse'Categories' LOCATION f4:'Browse'Product'Details' f3:'Browse' f7:%Sign%On%and% ...... is'a'part'of f5:'Browse'Item'Details' Categories' Off% f6:'Update'Shopping'Cart% IntraMFeature'Structure' f7:%Sign%On%and%Off% is'composed'of f8:'Update'Account' f9:'Update'Personaliza+on' SubMFeature'structure' f10:'Submit'Order' is'implemented'by f6:'Update' f8:'Update'Account ' f2:'Search' f5:'Browse' Shopping'Cart ' f9:'Update' Modules' Catalog' Item'Details' Developer f10:'Submit'Order ' Personaliza+on ' IntraMFeature'Structure • Call'dependency'graph'obtained'by'dynamic' analysis Future Work 1 156: 153: • Improving the scalability • Evalua+ng the effec+veness 162: 179: 92: 164: 314: 166: 111: and usability 97: 168: 87: 86: 88: 172: 187: 311: 297: 174: 185: 176: 159: 178: 182: 188: 158:
- 11. Credit • "Day 273 -‐ Tiny Trachodon" by puuikibeach – h^p://www.flickr.com/photos/puuikibeach/3768359322 • "That explains the nasty smell" by Kyknoord – h^p://www.flickr.com/photos/kyknoord/5341831715/