Dear All,
I want to discuss "3rd party so library installation feature.
Requirement
1. To provide a way to download a necessary shared library from
authorized/dedicated site
2. If users want to use application B which uses a shared library, they
download that library from the site by themselves.
3. When another application C requires the same library later, users can use it
without additional download.
4. When the end user tries to remove application B owning the shared library
that is required for other installed applications, the platform should warn the
user that designated applications would not work correctly if the library is
removed.
5. The platform should provide a naming service for the installed shared
library so that any 3rd party application using it may locate and use (load) it
without knowing the specific id of the owning package/application.
Considerations
1. Library provider
1) Tizen app can be a library provider with specifying a tag and embedding
the libraries.
2) Library provider specifies a tag in the manifest file.
a) <ProvideLibrary>http://tizen.org/library/name</ProvideLibrary>
b) This tag can be restricted to partner and platform privilege levels.
3) Libraries are located at /shared/res/ to share with other apps.
2. Library user
1) Library user specifies a tag in the manifest file.
a) <RequireLibrary>http://tizen.org/feature/library/name</RequireLibrary>
2) Library user has to check whether the library provider app has been
installed or not.
a) The library provider app is not installed, request of installation is
sent to Store client.
3. Platform package manager
1) Installed apps from Store should be uninstalled anytime when device user
requests through the System settings.
a) Library provider app should be uninstalled anytime.
b) Deep relationship with library provider app and library user is not
recommended.
Library user app can be working without library provider app, if
needed.
2) Package manager can extract information of provider and users using
manifest at installation time.
a) Package manager can display a warning popup to notify a message.
i.e. “If this app is uninstalled, [AppB, AppC and AppD] apps may not
be working well.”
b) If the provider is uninstalled, the related user apps can be
terminated, if needed.
3) Application libraries are located in app directory and don’t be moved to
common library directory.
a) Library path is not specified in library user app.
4) Package Manager can support library path API using the key that is
specified in manifest.xml.
Appendix
In Android, some apps use functionality and resources of another app
1. Several apps request functionality to an app
2. Several apps use an app as a service app
3. App accesses another app resource directly
4. Android supports <uses-library>, but these libraries are not downloaded by
store but preloaded.
Please check considerations and give me the feedback.
Best regards,
dongeup.
--
Dongeup Ham
Tizen package management and native installer
Samsung Electronics
[email protected]
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