Projects/Baloo: Difference between revisions

    From KDE TechBase
    (Replaced content with "Baloo is a metadata and search framework for KDE. This page is now moved to [http://community.kde.org/Baloo/Architecture community.kde.org]")
     
    (3 intermediate revisions by one other user not shown)
    Line 1: Line 1:
    Baloo is a metadata and search framework for KDE.
    Baloo is a metadata and search framework for KDE.


    == Architecture ==
    This page is now moved to [http://community.kde.org/Baloo/Architecture community.kde.org]
     
    Baloo focuses on decentralization of data, and does not have any central database. At its core it is a set of 3 services -
     
    * Data Stores
    * Search Stores
    * Relations
     
    === Data Stores ===
     
    A Data Store is a place to permanently store data. Its format and APIs are not dictated by Baloo, and can in any way that is most efficient for the data in question.
     
    === Search Store ===
     
    A Search Store is a plugin which provides search capabilities for a specific kind of data. Each of these stores provide a plugin which can be used to search through the data using a consistent API. At this moment there are 3 search stores that have been implemented -
     
    * File Search
    * Email Search
    * Contact Search
     
     
    Each Store can also provide custom APIs for searching the data.
     
    === Relations ===
     
    Baloo can be used to create relations between two uniquely identifiable identifiers. The key aspect is that when creating a relation between A and B, both of them are uniquely identifiable. For most of the PIM data, Akonadi already provides a unique identifier of the 'akonadi:?item=x'. For File data, Baloo provides unique identifiers of the form 'file:x'.
     
    Each relation is stored in an independent store in the desired mechanism. A sample sqlite implementation is provided which maps both the identifiers in a 2 column sqlite database.
     
    For example, there exists a TagRelation which maps a Tag and any unique identifier. Similarly, there can be an ActivityRelation, and relations for other aspects such as mapping a file received via Bluetooth to a Bluetooth device.

    Latest revision as of 15:40, 18 January 2014

    Baloo is a metadata and search framework for KDE.

    This page is now moved to community.kde.org