Moose Overview

Tudor Gîrba www.tudorgirba.com

1956 2006

1956 2006 ?

Software is complex. 29% Succeeded 18% Failed 53% Challenged The Standish Group, 2004

How large is your project?

How large is your project? 1’000’000 lines of code

How large is your project? 1’000’000 lines of code * 2 = 2’000’000 seconds

How large is your project? 1’000’000 lines of code * 2 = 2’000’000 seconds / 3600 = 560 hours

How large is your project? 1’000’000 lines of code * 2 = 2’000’000 seconds / 3600 = 560 hours / 8 = 70 days

How large is your project? 1’000’000 lines of code * 2 = 2’000’000 seconds / 3600 = 560 hours / 8 = 70 days / 20 = 3 months

Software development is more than forward engineering. Fo rw ar d en gin ee rin g { { { { { { } { { Actual development } } } } } } } } {

Reverse engineering is needed to make sense of the code. Fo rw ing ar r ee d en gin gin n e ee se rin er g v Re { { { { { { } { { Actual development } } } } } } } } {

Reverse engineering is creating high level views. ing r ee in ng e e s er ev R { { { { } } } } } {

McCabe = 21 NOM 0 = 102 ,00 3 75 = C LO ... Metrics Queries Visualizations { { { { } } } } } {

Metrics compress the system into numbers. 0 Cyclomatic complexity = 21 ,00 3 75 NOM = = 102 OC L { { { { } } } } } {

Queries reduce the analysis space. { { { { } } } } } {

Visualization compresses the system into pictures. { { { { } } } } } {

70% of our sensors are dedicated to vision.

How many groups do you see?

CodeCity Wettel, Lanza, 07 shows where your code lives.

Distribution Map shows how properties spread. Ducasse etal, 06

Polymetric views show up to 5 metrics. Lanza etal, 03 Width metric Height metric Position metrics Color metric

System Complexity shows class hierarchies. attributes methods lines

Class Blueprint shows class internals. Ducasse, Lanza, 05 Initialize Interface Internal Accessor Attribute invocation and access direction

Class Blueprint shows class internals.

Visualization compresses the system into pictures. { { { { } } } } } {

McCabe = 21 NOM 0 = 102 ,00 3 75 = C LO ... Metrics Queries Visualizations { { { { } } } } } {

Duplication detection McCabe = 21 Evolution analysis NOM 0 = 102 ,00 3 Dynamic analysis 75 = C LO ... Semantic analysis Metrics Queries Visualizations { { { { } } } } } {

Moose provides an agile visualization scripting. Meyer etal, 2005 view := ViewRenderer new. view borderedRectangleShape. view nodes: classes forEach: [:each | view nodes: each methods. view gridLayout ]. view edgesFrom: #superclass. view treeLayout. view open.

CVS hides the past

But, who did this?

We color the ﬁles according to the authors.

Still, alphabetical order is no order.

Ownership Map reveals developer patterns. Girba etal, 2005

FAMIX Meta UI Mondrian EyeSee Repository Core

FAMIX Meta UI Mondrian EyeSee Repository Core Java iPlasma MSE Smalltalk C++

Chronia Cook CodeCity DynaMoose Hapax Softwarenaut SmallDude FAMIX Meta UI Mondrian EyeSee Repository Core Java iPlasma MSE Smalltalk C++

CVS J-Wiretap MSE Source Chronia Cook CodeCity DynaMoose Hapax Softwarenaut SmallDude FAMIX Meta UI Mondrian EyeSee Repository Core Java iPlasma MSE Smalltalk C++

CVS J-Wiretap MSE Source ... Concept BugsLife Clustering Subversion Analysis Chronia Cook CodeCity DynaMoose Hapax Softwarenaut SmallDude FAMIX Meta UI Mondrian EyeSee Repository Core Java iPlasma MSE Smalltalk C++

Moose is a collective effort

Current Team Previous Team Stéphane Ducasse Serge Demeyer Tudor Gîrba Michele Lanza Adrian Kuhn Sander Tichelaar Current Contributors Previous Contributors Hani Abdeen Ilham Alloui Tobias Aebi Frank Buchli Gabriela Arevalo Mihai Balint Thomas Bühler Calogero Butera Philipp Bunge Marco D’Ambros Daniel Frey Georges Golomingi Orla Greevy Markus Hofstetter David Gurtner Reinout Heeck Matthias Junker Adrian Lienhard Markus Kobel Michael Locher Martin von Löwis Mircea Lungu Pietro Malorgio Michael Meer Michael Meyer Damien Pollet Laura Ponisio Daniel Ratiu Sara Sellos Lucas Streit Matthias Rieger Azadeh Razavizadeh Toon Verwaest Roel Wuyts Andreas Schlapbach Daniel Schweizer Richard Wettel Mauricio Seeberger Lukas Steiger Daniele Talerico Herve Verjus Violeta Voinescu.

Current Team Previous Team Stéphane Ducasse Serge Demeyer Tudor Gîrba Michele Lanza Adrian Kuhn Sander Tichelaar Current Contributors menPrevious Contributors ~ 100 years Hani Abdeen Ilham Alloui Tobias Aebi Frank Buchli Gabriela Arevalo Mihai Balint Thomas Bühler Calogero Butera Philipp Bunge Marco D’Ambros Daniel Frey Georges Golomingi Orla Greevy Markus Hofstetter David Gurtner Reinout Heeck Matthias Junker Adrian Lienhard Markus Kobel Michael Locher Martin von Löwis Mircea Lungu Pietro Malorgio Michael Meer Michael Meyer Damien Pollet Laura Ponisio Daniel Ratiu Sara Sellos Lucas Streit Matthias Rieger Azadeh Razavizadeh Toon Verwaest Roel Wuyts Andreas Schlapbach Daniel Schweizer Richard Wettel Mauricio Seeberger Lukas Steiger Daniele Talerico Herve Verjus Violeta Voinescu.

Tudor Gîrba www.tudorgirba.com

Tudor Gîrba www.tudorgirba.com creativecommons.org/licenses/by/3.0/

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Moose Overview

by Tudor Girba

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