Questions

Which types / classes have unwanted dependencies in our code?
Which group of types / classes is highly cohesive but lowly coupled?

Idea

Using JDK's jdeps command line utility, we can extract the existing dependencies between Java types:

jdeps -v dropover-classes.jar > jdeps.txt

Data

Read data in with Open Zippy Analysis Platform For Data In Software



In [1]:

    
from ozapfdis import jdeps

deps = jdeps.read_jdeps_file(
    "../datasets/jdeps_dropover.txt",
    filter_regex="at.dropover")
deps.head()









    Out[1]:







  
    
      
      raw
      from
      to
      type
    
  
  
    
      0
      at.dropover.comment.boundary.AddCommentRequ...
      at.dropover.comment.boundary.AddCommentRequest...
      at.dropover.framework.boundary.SiteDependentRe...
      dropover
    
    
      1
      at.dropover.comment.boundary.ChangeCommentR...
      at.dropover.comment.boundary.ChangeCommentRequ...
      at.dropover.framework.boundary.SiteDependentRe...
      dropover
    
    
      2
      at.dropover.comment.boundary.CommentData   ...
      at.dropover.comment.boundary.CommentData
      at.dropover.comment.boundary.TimeDiffResponseM...
      dropover
    
    
      3
      at.dropover.comment.boundary.CommentData   ...
      at.dropover.comment.boundary.CommentData
      at.dropover.framework.boundary.ResponseModel
      dropover
    
    
      4
      at.dropover.comment.boundary.GetCommentRequ...
      at.dropover.comment.boundary.GetCommentRequest...
      at.dropover.framework.boundary.SiteDependentRe...
      dropover

Modeling

Extract the information about existing modules based on path naming conventions



In [2]:

    
deps = deps[['from', 'to']]
deps['group_from'] = deps['from'].str.split(".").str[2]
deps['group_to'] = deps['to'].str.split(".").str[2]
deps.head()









    Out[2]:







  
    
      
      from
      to
      group_from
      group_to
    
  
  
    
      0
      at.dropover.comment.boundary.AddCommentRequest...
      at.dropover.framework.boundary.SiteDependentRe...
      comment
      framework
    
    
      1
      at.dropover.comment.boundary.ChangeCommentRequ...
      at.dropover.framework.boundary.SiteDependentRe...
      comment
      framework
    
    
      2
      at.dropover.comment.boundary.CommentData
      at.dropover.comment.boundary.TimeDiffResponseM...
      comment
      comment
    
    
      3
      at.dropover.comment.boundary.CommentData
      at.dropover.framework.boundary.ResponseModel
      comment
      framework
    
    
      4
      at.dropover.comment.boundary.GetCommentRequest...
      at.dropover.framework.boundary.SiteDependentRe...
      comment
      framework

Visualization

Output results with An Unified Software Integrator



In [3]:

    
from ausi import d3

d3.create_d3force(
    deps,
    "jdeps_demo_output/dropover_d3forced",
    group_col_from="group_from",
    group_col_to="group_to")









    



JSON file produced in 'C:\dev\repos\software-analytics\courses\20190918_Uni_Leipzig\jdeps_demo_output\dropover_d3forced.json'
HTML file produced in 'C:\dev\repos\software-analytics\courses\20190918_Uni_Leipzig\jdeps_demo_output\dropover_d3forced.html'



In [4]:

    
d3.create_semantic_substrate(
    deps,
    "jdeps_demo_output/dropover_semantic_substrate")









    



JSON file produced in 'C:\dev\repos\software-analytics\courses\20190918_Uni_Leipzig\jdeps_demo_output\dropover_semantic_substrate.json'
HTML file produced in 'C:\dev\repos\software-analytics\courses\20190918_Uni_Leipzig\jdeps_demo_output\dropover_semantic_substrate.html'



In [5]:

    
d3.create_hierarchical_edge_bundling(
    deps,
    "jdeps_demo_output/dropover_bundling")









    



JSON file produced in 'C:\dev\repos\software-analytics\courses\20190918_Uni_Leipzig\jdeps_demo_output\dropover_bundling.json'
HTML file produced in 'C:\dev\repos\software-analytics\courses\20190918_Uni_Leipzig\jdeps_demo_output\dropover_bundling.html'

	raw	from	to	type
0	at.dropover.comment.boundary.AddCommentRequ...	at.dropover.comment.boundary.AddCommentRequest...	at.dropover.framework.boundary.SiteDependentRe...	dropover
1	at.dropover.comment.boundary.ChangeCommentR...	at.dropover.comment.boundary.ChangeCommentRequ...	at.dropover.framework.boundary.SiteDependentRe...	dropover
2	at.dropover.comment.boundary.CommentData ...	at.dropover.comment.boundary.CommentData	at.dropover.comment.boundary.TimeDiffResponseM...	dropover
3	at.dropover.comment.boundary.CommentData ...	at.dropover.comment.boundary.CommentData	at.dropover.framework.boundary.ResponseModel	dropover
4	at.dropover.comment.boundary.GetCommentRequ...	at.dropover.comment.boundary.GetCommentRequest...	at.dropover.framework.boundary.SiteDependentRe...	dropover

	from	to	group_from	group_to
0	at.dropover.comment.boundary.AddCommentRequest...	at.dropover.framework.boundary.SiteDependentRe...	comment	framework
1	at.dropover.comment.boundary.ChangeCommentRequ...	at.dropover.framework.boundary.SiteDependentRe...	comment	framework
2	at.dropover.comment.boundary.CommentData	at.dropover.comment.boundary.TimeDiffResponseM...	comment	comment
3	at.dropover.comment.boundary.CommentData	at.dropover.framework.boundary.ResponseModel	comment	framework
4	at.dropover.comment.boundary.GetCommentRequest...	at.dropover.framework.boundary.SiteDependentRe...	comment	framework