[Kde-pim] Investigating a bug in KMail Search

[Tom Warnke]

Hi again,

I continued to look through the code of akonadi, kdepim and kdepimlibs. 
Currently I am trying to get akonadiconsole to work correctly, to ultimately 
investigate the issues with the search.

I noticed that the browser in akonadiconsole does not show the contents of my 
mail folders, so I started to look there. This issue can be "fixed" by doing  
statisticsProxyModel->setExtraColumnsEnabled(false); in browserwidget.cpp, 
which disables the proxyDataChanged() method in StatisticsProxyModel. Thus, I 
think this proxy model might be a good place to continue my search for bugs 
:-)

Now, my question is a technical one. How to debug kdepimlibs? I am on OpenSuse 
and using Qt Creator. I have cloned the kdepimlibs git repo and can look into 
the source code. However, when I execute akonadiconsole, it uses the 
kdepimlibs that were installed by my package manager. How can I make 
akonadiconsole use my modified kdepimlibs? How can I use Qt Creator to step 
through the code of kdepimlibs while executing a binary from kdepim?

It would be great if you could point me to some documentation on this. If 
there is none, I would try to write something as soon as I get this to work 
:-)

Thank you,
Tom

On Monday, January 18, 2016 6:28:44 PM CET Daniel Vrátil wrote:
> On pondělí 18. ledna 2016 9:03:14 CET Tom Warnke wrote:
> > Hi all,
> 
> Hi Tom!
> 
> > I've be investigating a bug in the search of KMail that has been the
> > subject of the following bug reports:
> > https://bugs.kde.org/show_bug.cgi?id=352472
> > https://bugs.kde.org/show_bug.cgi?id=353671
> > https://bugs.kde.org/show_bug.cgi?id=353318
> > https://bugs.kde.org/show_bug.cgi?id=354406
> > https://bugs.kde.org/show_bug.cgi?id=353675
> > 
> > The symptoms are:
> > 1) Sometimes, when search folders are deleted, the tree view in the left
> > pane of KMail gets messed up. Empty lines, account order is wrong etc.
> > This
> > can be fixed by restarting KMail.
> 
> This is probably a bug in one of the many many proxy models. It's not
> related to the Search Folder directly, it can be reproduced whenever a
> top-level entry in the collection tree is removed.
> 
> > 2) Existing search folders cannot be modified. They will always show the
> > results that they showed when they were created, no matter how the query
> > is
> > changed.
> 
> That sounds like a bug in the Akonadi server.
> 
> > 3) New searches and search folders return no results most of the time. If
> > they return results, they are sometimes wrong.
> :
> :(
> :
> > einar77 (don't know if he's on this list) told me on IRC that issue 1) is
> > related to the Entity Tree Model that is somehow disconnected from the
> > view
> > in KMail.
> 
> Could also be the reason. You can use a tool called GammaRay to introspect
> the KMail models (and much more) and see on which level things go wrong.
> > To look into the issues, I cloned the source of KMail 5.1.1, set up a
> > build
> > environment and stepped through searchwindow.cpp with QT Creator. However,
> > I could not find something wrong. I would like to continue looking in
> > Akonadi. My question is: What is the best way to debug Akonadi with all
> > its subprojects and processes?
> 
> The window is really just a window, the actual search functionality is
> implemented in Akonadi server and friends. Basically for the search, you are
> really only interested in three components:
>   * Akonadi Indexing Agent (from akonadi-search.git repository), which takes
> care of indexing all data in Akonadi and storing them in an index database
> * Akonadi Search Plugin (also from akonadi-search.git), which is loaded by
> the Akonadi Server and allows it to search in the index database * Akonadi
> Server (from akonadi.git) - the Akonadi Server itself, which manages the
> search collections and the results and keeps them up-to-date
> > Sorry for the long mail. I've been a user of the KDE PIM suite for years,
> > but have just started looking at the inside. I'm just trying to make sure
> > I
> > did not make an obvious mistake :-)
> 
> No worries, if you have any questions, feel free to ask here on or IRC.
> 
> Thanks for looking into these issues!
> 
> 
> Dan
> 
> > Best,
> > Tom
> > _______________________________________________
> > KDE PIM mailing list kde-pim at kde.org
> > https://mail.kde.org/mailman/listinfo/kde-pim
> > KDE PIM home page at http://pim.kde.org/


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