View source for Baloo/XapianProblems

=== Problems with Xapian ===

* It heavily relies on exceptions. Exceptions are not well supported in Qt and might make the application crash as mentioned [http://qt-project.org/doc/qt-5/exceptionsafety.html here]. For example while locking  a database Xapian expects the program to catch certian exceptions and retry if they are cought.

*If we want to read and write to an Xapian database simultaneously we need to keep separate copies for reading and writing, thus wasting memory.

*It does not handle data that is changing frequently, if data in document changes to frequently it can lead to a conditions in which locking the database for writing becomes impossible thus making baloo fail.

*Baloo needs support for normalizing text i.e. removing all diacritic marks and also needs to split words with '_' to generate terms, Xapian's term generator doesn't provide support for either. So baloo uses its own term generator.

*While searching for something the user may not type complete words so we need to look for every possible expansion of the words in a query,  xapian doesn't provide this feature so we're using our own query parser.