Nepomuk/Filindeksering

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Note

Denne side dokumenterer Nepomuks filindekser og hvordan den kan indstilles.

Filindekser

Nepomuk er den primære filindekser for KDE Arbejdsflader.

Arkitektur

Fra KDE Workspace 4.10 udfører Nepomuks filindekser indekseringen i to faser. Denførste fase kaldet grundlæggende indeksering udtrækker kun filnavn, modifikationsdato og mimetype. Den anden fase er ansvarlig for at se ind i filerne og udtrække imformation om ting som kunstner, album og titel.

Som standard kører den grundlæggende indeksering altid og kan kontrolleres ved at deaktivere Nepomuk filindeksering i Systemindstillinger -> Skrivebordssøgning -> Basale indstillinger. Som standard udføres filindeksering kun når brugeren ikke er aktiv.

Ændring af standardopførslen

Du kan ændre standardopførslen afhængigt af dine behov og lade filindekseringen køre altid. Denne standardopførsel kan ændres ved at redigere filen nepomukstrigirc og tilføje følgende punkter -

[Indexing]
BasicIQDelay=0
FileIQDelay=0
NormalMode_FileIndexing=suspend

Følgende punkter kan ændres -

BasicIQDelay - By default, the basic indexing queue doesn't wait between files. An artificial delay can be introduced by this parameter.

FileIQDelay - File Indexing is an intensive process. One might want a delay between files, so that the indexing runs slower.

NormalMode_FileIndexing - This can be either "suspend" or "resume". If it is set to "resume" then the file indexer, will always be run during normal indexing.

Startup Scan

On starting the Nepomuk File Indexer, it scans through all the all the files marked for indexing and checks if they have been modified. This scan on startup may take some amount of time. By default it is not configurable. It can however, be avoided by adding this parameter to the nepomukstrigirc.

[General]
disable initial update=true

This will disable the startup scan of all the indexed files.

File Indexing Errors

Due to bugs and incorrect files one occasionally might encounter files which cannot be indexed. One can log the indexing errors in that case by changing the following parameter in nepomukstrigirc.

[General]
debug mode=true

This will cause all the file errors to be written to the $KDEDIR/share/data/nepomuk/file-indexer-error.log file. You might want to check this file and report the errors by uploading the relevant file and error on http://bugs.kde.org

File Formats

With the KDE Workspace 4.10 release, we no longer rely on Strigi for file indexing. We now rely on our own home-grown indexer which use libraries already heavily used within KDE.

In 4.10, we support most Image, Video, and Audio formats. We are however lacking in Document Formats and only support PDF. If you can encounter some file which you think has not been indexed, you can manually index it by manually running the following command nepomukindexer fileUrl. Make sure you have Nepomuk debug messages. If the file has been successfully indexed, and Nepomuk has not managed to successfully extract the required information, then please file a bug report with the relevant details.