[Nepomuk] Re: Fulltext search in nepomuk

[Christian Mollekopf]

On Thu, 05 May 2011 19:46:37 +0200, Sebastian Trüg <trueg at kde.org> wrote:

> Update:
> Let's discuss tomorrow on how to use the DMS. If you want you can drop
> by #nepomuk-kde on IRC.

Alright, probably somewhere around 14.00-19.00 or in the morning I'll drop  
by.

>
> On 05/05/2011 05:23 PM, Christian Mollekopf wrote:
>> On Thu, 05 May 2011 16:17:56 +0200, Sebastian Trüg <trueg at kde.org>  
>> wrote:
>>
>>> On 05/05/2011 11:26 AM, Christian Mollekopf wrote:
>>>> On Thu, 05 May 2011 11:15:11 +0200, Sebastian Trüg <trueg at kde.org>
>>>> wrote:
>>>>
>>>>> On 05/05/2011 11:10 AM, Christian Mollekopf wrote:
>>>>>> On Thu, 05 May 2011 11:05:50 +0200, Sebastian Trüg <trueg at kde.org>
>>>>>> wrote:
>>>>>>
>>>>>>> If you get duplicate results it may be that nie:description is
>>>>>>> defined
>>>>>>> more than once. Replace "select ?r" with "select *" in the query to
>>>>>>> verify.
>>>>>>
>>>>>> Ok, I think thats it. I get all the different versions of the text.
>>>>>> Currently I'm using:
>>>>>> res.addProperty( Vocabulary::NIE::description(),
>>>>>> Soprano::LiteralValue(
>>>>>> note.text() ) );
>>>>>>
>>>>>> I should probably use setProperty for nie:title and nie:description?
>>>>>
>>>>> exactly. :)
>>>>
>>>> I'm using the NepomukFast generated classes, because that's what the
>>>> other
>>>> akonadi feeder agents do, but in NepomukFast::Resource setProperty is
>>>> not
>>>> declared.
>>>> Any ideas why and what to do?
>>>>
>>>> If possible it would be probably good to use the NepomukFast classes  
>>>> for
>>>> feeders,
>>>> as they might have to update a lot of data.
>>>>
>>>> Also where exactly should I use addProperty and where setProperty?
>>>> In most cases, such as:
>>>> res.addProperty( Soprano::Vocabulary::NAO::hasSymbol(),
>>>> Soprano::LiteralValue( Note::iconName() ) );
>>>>
>>>> which I do on every update of a note,
>>>> using addProperty would end up in setting the same information over  
>>>> and
>>>> over again, no?
>>>
>>> Actually with the DMS I mentioned before the situation changes again as
>>> it enforces cardinalities, ie. an addProperty would fail if the  
>>> property
>>> can only have one value and one already exists.
>>>
>>> Also you might want to try our new storeResources API. The nice thing
>>> about it is that trivial instances like contacts and so on are
>>> automatically merged.
>>> For example the email feeder would not have to check itself it a  
>>> contact
>>> already existed. The DMS does that.
>>>
>>> If you are up to testing 95% finished API with us and give us feedback
>>> that would be great.
>>
>> Yes, sounds great. I guess code using that API would have to wait for  
>> 4.8?
>> Where can I find the code exactly (it doesn't seem to be in kdelibs)?
>>
>> In the meantime, is it possible to somehow add the setProperty call to  
>> the
>> NepomukFast classes?
>> (As only addProperty is available atm.)
>>
>> Cheers,
>>
>> Chris
>>
>>>
>>> Cheers,
>>> Sebastian
>>>
>>>>>
>>>>>>>
>>>>>>> On 05/05/2011 10:00 AM, Christian Mollekopf wrote:
>>>>>>>> I forgot to mention:
>>>>>>>>
>>>>>>>> Often I get the same resource as result of such a query multiple
>>>>>>>> times
>>>>>>>> (i.e. 6 times).
>>>>>>>> The number of results varies for different search strings, but it
>>>>>>>> seems
>>>>>>>> to
>>>>>>>> remain stable for multiple searches for the same string.
>>>>>>>> I'm sure that the searched strings are unique within the note, as
>>>>>>>> they
>>>>>>>> are
>>>>>>>> some random strings.
>>>>>>>>
>>>>>>>> Is there a reason for this, or is it a bug?
>>>>>>>>
>>>>>>>> Cheers
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thu, 05 May 2011 09:51:26 +0200, Christian Mollekopf
>>>>>>>> <chrigi_1 at fastmail.fm> wrote:
>>>>>>>>
>>>>>>>>> In the akonadi-nepomuk-note feeder, I'm using nie:description to
>>>>>>>>> set
>>>>>>>>> the
>>>>>>>>> text
>>>>>>>>> of the note, wo It can be found via fulltext search.
>>>>>>>>>
>>>>>>>>> This basically works fine, meaning I'm able to find the resource
>>>>>>>>> with:
>>>>>>>>>
>>>>>>>>> select ?r where { ?r nie:description ?label .
>>>>>>>>>                   ?label bif:contains 'sometext' . }
>>>>>>>>>
>>>>>>>>> What I find confusing is, that not all, but most resources which  
>>>>>>>>> I
>>>>>>>>> browsed
>>>>>>>>> afterwards did not have the nie:description property set (I  
>>>>>>>>> checked
>>>>>>>>> both,
>>>>>>>>> resource and thing).
>>>>>>>>> Not in the "browse resource view" and also not in the "show
>>>>>>>>> serialized
>>>>>>>>> resource" view.
>>>>>>>>>
>>>>>>>>> Is this just a bug in nepomukshell? And is there maybe another  
>>>>>>>>> tool
>>>>>>>>> for
>>>>>>>>> me to
>>>>>>>>> check the created resources?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>>
>>>>>>>>> Chris
>>>>>>>>> _______________________________________________
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>>>>>>
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>>
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