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Eclipse Code Recommenders
“IDE 2.0” Collec&ve Intelligence in So/ware Development Leveraging the Wisdom of the Crowds Marcel Bruch
Developers Who Called “new Text()” Method Also Called
What Do Developers Ultimately Override After Extending This Class?
setText()
89%
addListener()
53%
setLayout()
99%
setFont()
35%
100 % overwrote PreferencePage.createContents()
96 % overwrote PreferencePage.performOk()
5 % overwrote PreferencePage.performCancel()
Eclipse Code Recommenders – do what most people do! (where appropriate)
Code All Frameworks
Eclipse Code Recommenders
Code
INTELLIGENT CODE COMPLETION
“Other developers frequently bought used the following methods…”
Code Comple&on…
What does the developer need, i.e., which methods should the code completion present to the user?
All 164 Methods of Text ?
JButton? 381 Methods.
Code Comple&on…
What does the developer need, i.e., which methods should the code completion present to the user?
Intelligent Code Comple&on
… or just the three missing ones?
Smart Bug Detec&on
What have I missed?
Demo: Tools Outline
Usage-‐Driven Javadocs Intelligent Code Comple&on
Code Example Recommender
How do I get an instance of…?
Stacktrace Search Engine
What caused that stacktrace?
WHAT CAUSED THAT STACKTRACE?
Stackoverflow.com – Reloaded!
But what if you get this?
Debugging – the old way
Debugging – the old way
But more o/en we get…
How can we fix that? Don’t stacktraces share some commonali&es?
org.eclipse.swt.SWTException: Invalid thread access at org.eclipse.swt.SWT.error(SWT.java:3884) at org.eclipse.swt.SWT.error(SWT.java:3799) at org.eclipse.swt.SWT.error(SWT.java:3770) at org.eclipse.swt.widgets.Widget.error(Widget.java:463) at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:355) at org.eclipse.swt.widgets.ProgressBar.setSelection(ProgressBar.java:317) at org.eclipselabs.cr.stacktraces.demo.ThreadDemo$1.run(Unknown Source) at java.lang.Thread.run(Thread.java:619)
ExceptionType Feature (evaluates identical exception type) Message Similarity Feature
(counts of similar words)
TraceDiff Similarity Feature (counts similar stackframes per trace)
How about stacktraces.org?
From IDE 1.0 to IDE 2.0
(Student) Contributors so far… Jan Kassens, Peter Schroeder, Daniel Glöckner, Maik Görtz, Johannes Lerch, Johannes Born, Mohsen Parisay, Andreas Sewe, SebasPan Ahlfeld, SebasPan Kasten, Daniel Staesche, David Kalnischkies, SebasPan Wörner, Boyan Yurukov, Jan Stolzenburg, Nico Wombacher, Dirk Kröhan, Florian Jakob, Julius Rückert, Steffen Remus, Christopher Mann, Stefan Henss, Andreas Kaluza, Nikolay Shindov, Michael Novotny, KrisPn Arand, Sinem Emeröz, Michael Kutschke, SebasPan Proksch, Tomasz Kalbarczyk, Marko MarPn, Sheip Dargutev, David Schuld, Jens Krause, KrisPjan Madunic, Daniel Brandtner, Roman GeWo, ChrisPan Kilb, Johannes Kastl, Dennis Sänger, Annie Liu, Markus Migenda, Tjark Vandommele, SebasPan Denel, Florian Nöll, Gary Fritz, Dennis Siebert, Peter Sinzig, Laura Altmüller, Paul Schatygin, Jan-‐Michael Heller, Minh Hoang Nguyen, Sascha Nordquist
Smart Bug Detec&on
What have I missed?
Summary
Usage-‐Driven Javadocs Intelligent Code Comple&on
Code Example Recommender
How do I get an instance of…?
Stacktrace Search Engine
What caused that stacktrace?
It’s there.
http://eclipse.org/recommenders
Follow me on twitter: @MarcelBruch
Q & A
Affilia&on
Prof. Dr. Mira Mezini So/ware Technology Group Fachbereich Informa&k Technische Universität Darmstadt
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