Software understanding in the large (EVO 2008)

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    Software understanding in the large (EVO 2008) - Presentation Transcript

    1. Software understanding in the large Tudor Gîrba www.tudorgirba.com
    2. fo rw g rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } } } } {
    3. fo rw g reverse engineering rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } } } } {
    4. fo rw g reverse engineering rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } } } } {
    5. { { { { } } { } } } } { Systems are large and complex
    6. { { { { } } { } } } } { … and have many facets
    7. Still, simple tools can get you far
    8. for i in $( ls ); do echo `wc -l $i` >> temp done sort -nr temp | head -10
    9. 3 Spinellis 200
    10. Indentation correlates with complexity. indle e tal 2008 H
    11. Queries reduce the analysis space
    12. Intensional Views ensure rules acceptsClassOfType(?VisitorClass,?VisitedClass) if methodWithNameInClass(?Method,?Selector,?VisitorClass), [’accept*’ match:?Selector asString], argumentOfMethod(?Argument,?Method), [’*’,(?VisitedClass name asString), ’*’ match:?Argument asString] 6 Mens etal 200
    13. Visual queries put results in perspective
    14. Every system is special.
    15. 2 te am am te 1 { { { { { { } { { } } } { { } } } } } } } } { {
    16. 2 te am am te 1 { { { { = { { } { { } } } { { } } } } } } } } { {
    17. Every system is special.
    18. vs. Live ana Rep orting lysis
    19. Every system is special.
    20. Every technology is special.
    21. Data Classes are dumb data holders Interface of class reveals data rather than offering services WOC < ONE THIRD AND Data Class Class reveals many attributes and is not complex 006 ari nescu 2 L anza, M
    22. Use a Transfer Object to encapsulate the business data. A single method call is used to send and retrieve the Transfer Object. When the client requests the enterprise bean for the business data, the enterprise bean can construct the Transfer Object, populate it with its attribute values, and pass it by value to the client. java .sun.com
    23. Every technology is special.
    24. In Java { { { { } } { = .java } } } } {
    25. In J2EE { { { { } } { = .java } } } } {
    26. In J2EE .jsp { { { { } } { = .java } } } } {
    27. In J2EE .jsp { { { { } } { = .java } } } } { .xml
    28. .java we oking only at rmation By lo ful info ould m iss use w
    29. fo rw g reverse engineering rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } } } } {
    30. fo rw g reverse engineering rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } } } } * { /* */
    31. 7 etal 200 Schreck
    32. 7 etal 200 Schreck
    33. fo rw g reverse engineering rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } } } } * { /* */
    34. fo rw g reverse engineering rin ar ee d gin en gin en ee e rs rin ve g re { { { } { { { } { { { actual development } } } } } .pdf } } } * { /* */ @
    35. MAKAO shows Makefile dependencies dams e tal 2007 A
    36. The sources can tell you how the system looks like, but not why.
    37. ugly?
    38. Model
    39. Model GUI
    40. Model Helpers GUI
    41. Model Helpers GUI 5 etal 199 Murphy
    42. Model Helpers
    43. ann e tal 2008 Brühlm
    44. ann e tal 2008 Brühlm
    45. Put findings in perspective.
    46. It’s not Lupus
    47. You mainly see what you are looking for.
    48. Tudor Gîrba www.tudorgirba.com creativecommons.org/licenses/by/3.0/

    + Tudor GirbaTudor Girba, 2 years ago

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