Hi
On Tue, Feb 12, 2013 at 2:12 PM, Reto Bachmann-Gmür <[email protected]> wrote:
> Update: I just found FieldQueryImpl so I don't need to create a new
> class or to use a Factory.
>
> However the following returns no results even though entities are available:
>
> final FieldQuery query = new FieldQueryImpl();
> final QueryResultList<Representation> result = siteManager.find(query);
> return "executing query result: "+result.results();
>
> Is it more complicated to make a query without any restriction?
I have never tried to execute a query without constraint. This case is
also not considered by the implementations.
A quick look at the SolrYard implementation suggests that this would
generate a SolrQuery with an empty query. An empty query results in an
empty query response by Solr. To iterate over all entities you would
need to use *:* as query. You can try this on the dev.Iks-project.eu
server by using
http://dev.iks-project.eu:8081/solr/default/iptc/select?q=
and
http://dev.iks-project.eu:8081/solr/default/iptc/select?q=*:*
This means adding this feature for the Solr based implementation would
be easy. For SPARQL I do not have a clear Idea how to formulate an
Query that iterate over all Entities - meaning selecting any subject
and providing all outgoing triples - mainly because the LIMIT in
SPARQL is based on Triples and not based on selected subjects.
best
Rupert
>
> Cheers,
> Reto
>
> On Tue, Feb 12, 2013 at 2:05 PM, Reto Bachmann-Gmür <[email protected]> wrote:
>> Thanks Rupert,
>>
>> Indeed the SiteManager is what I was looking for.
>>
>> Now i?m trying to find out how to query against the SiteManager. The
>> SiteManager has method that take a FieldQuery but it has no method
>> providing a QueryFactory. Can I just pass it an anonymous instance of
>> Query? What are the set- and remove methods for, is it safe not to
>> implement them?
>>
>> Will a query with an empty constraint set result in all entities being
>> returned?
>>
>> Cheers,
>> Reto
>>
>> On Sun, Feb 10, 2013 at 7:23 PM, Rupert Westenthaler
>> <[email protected]> wrote:
>>> Hi
>>>
>>> Are you talking about the entityhub and not about the dbpedia
>>> referenced site? The Entityhub is empty by default.
>>>
>>> best
>>> Rupert
>>>
>>> On Sun, Feb 10, 2013 at 1:36 PM, Reto Bachmann-Gmür <[email protected]>
>>> wrote:
>>>> Hi Rupert
>>>>
>>>> I'm using the full launcher. On
>>>> http://dev.iks-project.eu:8081/entityhub I don't see more data either.
>>>> It doesn't find dbpedia:Paris and the following query yields to no
>>>> result:
>>>>
>>>> {
>>>> "query": {
>>>> "selected": [],
>>>> "constraints": [{
>>>> "type": "text",
>>>> "patternType": "wildcard",
>>>> "text": "*",
>>>> "field":
>>>> "http:\/\/stanbol.apache.org\/ontology\/entityhub\/entityhub#label"
>>>> }],
>>>> "limit": 10,
>>>> "offset": 0,
>>>> "ldpath": "name = rdfs:label[@en] :: xsd:string;"
>>>> },
>>>> "results": []
>>>> }
>>>>
>>>> Cheers,
>>>> Reto
>>>>
>>>> On Sat, Feb 9, 2013 at 10:30 PM, Rupert Westenthaler
>>>> <[email protected]> wrote:
>>>>> Hi Reto
>>>>>
>>>>> AFAIK the stable, full and full-war launcher should still have the
>>>>> dbpedia defaultdata index included. If this would not be the case for
>>>>> the full launcher, than the integration-test would fail. What launcher
>>>>> are you referring to?
>>>>>
>>>>> best
>>>>> Rupert
>>>>>
>>>>> On Sat, Feb 9, 2013 at 8:51 PM, Reto Bachmann-Gmür <[email protected]>
>>>>> wrote:
>>>>>> Hello
>>>>>>
>>>>>> The released version of Stanbol had this 43k default index for the
>>>>>> Entityhub. The current snapshot version seems not to have any entity.
>>>>>> Because of this the examples on the example page return no results (e.g.
>>>>>> the query for http://dbpedia.org/resource/Paris). I like having some data
>>>>>> in Entityhub by default. If the data is removed then I think the example
>>>>>> should be changed as to include some example creating an entity so that
>>>>>> the
>>>>>> user can click through it and have some actual results.
>>>>>>
>>>>>> Cheers,
>>>>>> Reto
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> | Rupert Westenthaler [email protected]
>>>>> | Bodenlehenstraße 11 ++43-699-11108907
>>>>> | A-5500 Bischofshofen
>>>
>>>
>>>
>>> --
>>> | Rupert Westenthaler [email protected]
>>> | Bodenlehenstraße 11 ++43-699-11108907
>>> | A-5500 Bischofshofen
--
| Rupert Westenthaler [email protected]
| Bodenlehenstraße 11 ++43-699-11108907
| A-5500 Bischofshofen
