[Sugar-devel] Call for testing and feedback: alternative Journal implementation

[Eduardo H. Silva]

2012/5/9 Eduardo H. Silva <hoboprimate at gmail.com>:
> 2012/5/9 Christophe Guéret <c.d.m.gueret at vu.nl>:
>> Dear all,
>>
>> A part of the project "SemanticXO" concerns the implementation of an
>> alternative Journal implementation making use of the triple store backend.
>> Triple store are data bases optimised to store factual information in the
>> form of statements linking a subject, a property and a value. This makes
>> them particularly fit to store key/value metadata, such as the one the
>> Journal uses. The feature proposal for SemanticXO gives more detailled
>> about what this is about: http://wiki.sugarlabs.org/go/Features/Semantic_Web
>>
>> I've just finished removing a couple of bugs and would be interested in
>> getting a first round of feedback.
>> The installation procedure is not super convenient but should be manageable
>> anyway: http://wiki.sugarlabs.org/go/Features/Semantic_Web/Testing
>>
>> The code is based on two parts:
>> * a module "common" that allows to store arbitrary data in the triple store
>> * a module "datastore" which uses "common" to store the data from the
>> Journal
>> I'm now working on implementing other usage examples for "common". In the
>> Journal, the most visible change is the possibility to browse the content
>> through the SPARQL interface of the triple store. This means it is possible,
>> and rather easy, to gather statistics about the activities performed in a
>> class room or do backup of the metadata without having to interupt any other
>> activity.
>>
>> Looking forward to your feedback, cheers,
>> Christophe
>>
>>
>> _______________________________________________
>> Sugar-devel mailing list
>> Sugar-devel at lists.sugarlabs.org
>> http://lists.sugarlabs.org/listinfo/sugar-devel
>>
>
> Hi,
> Followed the steps in the wiki page. At the last step, sugar-emulator
> crashes when launching. This is running sugar 0.96.1 in Fedora 17. I
> renamed ~/.sugar to another name before launching sugar-emulator:
>
> ** (process:21449): WARNING **: Trying to register gtype
> 'GMountMountFlags' as enum when in fact it is of type 'GFlags'
>
> ** (process:21449): WARNING **: Trying to register gtype
> 'GDriveStartFlags' as enum when in fact it is of type 'GFlags'
>
> ** (process:21449): WARNING **: Trying to register gtype
> 'GSocketMsgFlags' as enum when in fact it is of type 'GFlags'
> Gtk-Message: Failed to load module "pk-gtk-module"
> GNOME_KEYRING_CONTROL=/run/user/jobezone/keyring-rHyu00
> GNOME_KEYRING_PID=21469
>
> ** (process:21456): WARNING **: Trying to register gtype
> 'GMountMountFlags' as enum when in fact it is of type 'GFlags'
>
> ** (process:21456): WARNING **: Trying to register gtype
> 'GDriveStartFlags' as enum when in fact it is of type 'GFlags'
>
> ** (process:21456): WARNING **: Trying to register gtype
> 'GSocketMsgFlags' as enum when in fact it is of type 'GFlags'
> ** Message: pygobject_register_sinkfunc is deprecated (HippoCanvasBox)
> Traceback (most recent call last):
>  File "/usr/bin/sugar-session", line 289, in <module>
>    main()
>  File "/usr/bin/sugar-session", line 228, in main
>    from jarabe.desktop import homewindow
>  File "/usr/lib/python2.7/site-packages/jarabe/desktop/homewindow.py",
> line 25, in <module>
>    from jarabe.desktop.meshbox import MeshBox
>  File "/usr/lib/python2.7/site-packages/jarabe/desktop/meshbox.py",
> line 48, in <module>
>    from jarabe.journal import misc
>  File "/usr/lib/python2.7/site-packages/jarabe/journal/misc.py", line
> 26, in <module>
>    from sugar.activity import activityfactory
>  File "/usr/lib/python2.7/site-packages/sugar/activity/activityfactory.py",
> line 34, in <module>
>    from sugar.datastore import datastore
>  File "/usr/lib/python2.7/site-packages/sugar/datastore/datastore.py",
> line 77, in <module>
>    _get_data_store()
>  File "/usr/lib/python2.7/site-packages/sugar/datastore/datastore.py",
> line 51, in _get_data_store
>    DS_DBUS_PATH),
>  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 244, in get_object
>    follow_name_owner_changes=follow_name_owner_changes)
>  File "/usr/lib/python2.7/site-packages/dbus/proxies.py", line 241, in __init__
>    self._named_service = conn.activate_name_owner(bus_name)
>  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 183, in
> activate_name_owner
>    self.start_service_by_name(bus_name)
>  File "/usr/lib/python2.7/site-packages/dbus/bus.py", line 281, in
> start_service_by_name
>    'su', (bus_name, flags)))
>  File "/usr/lib/python2.7/site-packages/dbus/connection.py", line
> 630, in call_blocking
>    message, timeout)
> dbus.exceptions.DBusException:
> org.freedesktop.DBus.Error.Spawn.ChildExited: Process
> /usr/bin/datastore-service exited with status 1
> g_dbus_connection_real_closed: Remote peer vanished with error:
> Underlying GIOStream returned 0 bytes on an async read
> (g-io-error-quark, 0). Exiting.
> Aviso do gestor de janelas: Erro IO fatal 11 (Resource temporarily
> unavailable) no ecrã ':30'.
>
> This last line translates to:
> TRANS:window manager warning: [...] in screen':30'.]
>
> Eduardo

Ah, the error actually starts with /usr/bin/sugar-datastore (which I
replaced with the one included in the semanticXO directory):

datastore-service:13:<module>:ImportError: No module named
semanticstore.datastore

Eduardo