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Posted to dev@stanbol.apache.org by Alessandro Adamou <al...@istc.cnr.it> on 2012/03/20 16:07:59 UTC
Configuring a referenced site for Revyu
Hi Rupert,
I've been trying to setup a referenced site for revyu.com, not caching
to begin with, but I can't seem to be able to obtain entity signatures
with my configuration.
The Web version of the SPARQL endpoint (originally at
http://revyu.com/sparql , supports GET with parameter "query") is at
http://revyu.com/sparql/queryform
Note from the example there that it accepts unprefixed references such
as <people/tom> .
It does resolve http://revyu.com/people/tom , although you always get a
303 See Other
(e.g. http://revyu.com/people/tom/about/rdf if the request had "Accept:
application/rdf+xml" , or http://revyu.com/people/tom/about/html for
text/html)
This is my site configuration (using sparql for dereferencing too). Any
idea what I am doing wrong?
ID = revyu
name = Revyu
Entity prefix = http://purl.org/stuff/rev#
Access URI = http://revyu.com/sparql
Dereferencer implementation = SPARQL
Query service = http://revyu.com/sparql
Searcher implementation = SPARQL
Default symbol state = proposed
Default mapping state = proposed
Expire = none
Cache strategy = never
The entityhub debug log doesn't seem to throw errors, warnings or odd
messages.
Thanks
Alessandro
--
M.Sc. Alessandro Adamou
Alma Mater Studiorum - Università di Bologna
Department of Computer Science
Mura Anteo Zamboni 7, 40127 Bologna - Italy
Semantic Technology Laboratory (STLab)
Institute for Cognitive Science and Technology (ISTC)
National Research Council (CNR)
Via Nomentana 56, 00161 Rome - Italy
"I will give you everything, so long as you do not demand anything."
(Ettore Petrolini, 1930)
Not sent from my iSnobTechDevice
Re: Configuring a referenced site for Revyu
Posted by Rupert Westenthaler <ru...@gmail.com>.
Hi Alessandro,
With http://svn.apache.org/viewvc?rev=1303322&view=rev this should now
work as expected. It would be cool if you could test this. My tests
worked as expected.
regarding your question about the entity prefixes:
This is only used by the ReferencedSiteManager component to decide
based on the URI if an ReferencedSite need to be asked on requests for
an entity. So it only affects requests for dereferencing entities via
the "/entityhub/sites" endpoint. It is NOT used as base URL.
In the case of "revyu" you can set "http://revyu.com/" as prefix as
all entities defined by this site do use this as common prefix.
best
Rupert
On Tue, Mar 20, 2012 at 4:50 PM, Alessandro Adamou <ad...@cs.unibo.it> wrote:
> Thanks a lot Rupert,
>
>
>> The answer is very easy. The Sparql searcher uses N3 as default
>> serialization and this SPARQL endpoint simple ignores that and returnes
>> rdf+xml.
>>
>> If I change the default in the code to "application/rdf+xml" at least
>> /find queries work as expected
>>
>> Maybe we should change the default to rdf+xml?
>
>
> That could be an idea, but we should let the statistics decide. If there are
> so many more that support rdf+xml and not n3, perhaps we should.
>
> Update: if I use CoolURI for dereferencing and set the access URI as simply
> http://revyu.com I do get some results. I would still prefer Sparql, but I
> can work with this in the meantime.
>
> Best,
>
> Alessandro
>
>
>
>> On 20.03.2012, at 16:24, Alessandro Adamou wrote:
>>
>>> Sorry again, I meant that the last three prefixes end with slashes.
>>>
>>> http://purl.org/stuff/rev#
>>> http://revyu.com/things/
>>> http://revyu.com/reviews/
>>> http://revyu.com/people/
>>>
>>> For clarity, with these settings the referencedSiteMgr.getEntity(uri) is
>>> returning non-null but empty Entity objects, no matter if the entity URI
>>> exists or is made up.
>>>
>>> Best,
>>> Alessandro
>>>
>>>
>>> On 3/20/12 4:19 PM, Alessandro Adamou wrote:
>>>>
>>>> I add that it didn't work even after setting these entity prefixes:
>>>>
>>>> http://purl.org/stuff/rev#
>>>> http://revyu.com/things
>>>> http://revyu.com/reviews
>>>> http://revyu.com/people
>>>>
>>>>
>>>> On 3/20/12 4:07 PM, Alessandro Adamou wrote:
>>>>>
>>>>> Hi Rupert,
>>>>>
>>>>> I've been trying to setup a referenced site for revyu.com, not caching
>>>>> to begin with, but I can't seem to be able to obtain entity signatures with
>>>>> my configuration.
>>>>>
>>>>> The Web version of the SPARQL endpoint (originally at
>>>>> http://revyu.com/sparql , supports GET with parameter "query") is at
>>>>> http://revyu.com/sparql/queryform
>>>>>
>>>>> Note from the example there that it accepts unprefixed references such
>>>>> as<people/tom> .
>>>>>
>>>>> It does resolve http://revyu.com/people/tom , although you always get a
>>>>> 303 See Other
>>>>>
>>>>> (e.g. http://revyu.com/people/tom/about/rdf if the request had "Accept:
>>>>> application/rdf+xml" , or http://revyu.com/people/tom/about/html for
>>>>> text/html)
>>>>>
>>>>> This is my site configuration (using sparql for dereferencing too). Any
>>>>> idea what I am doing wrong?
>>>>>
>>>>> ID = revyu
>>>>> name = Revyu
>>>>> Entity prefix = http://purl.org/stuff/rev#
>>>>> Access URI = http://revyu.com/sparql
>>>>> Dereferencer implementation = SPARQL
>>>>> Query service = http://revyu.com/sparql
>>>>> Searcher implementation = SPARQL
>>>>> Default symbol state = proposed
>>>>> Default mapping state = proposed
>>>>> Expire = none
>>>>> Cache strategy = never
>>>>>
>>>>> The entityhub debug log doesn't seem to throw errors, warnings or odd
>>>>> messages.
>>>>>
>>>>> Thanks
>>>>>
>>>>> Alessandro
>>>>>
>>>>> --
>>>>> M.Sc. Alessandro Adamou
>>>>>
>>>>> Alma Mater Studiorum - Università di Bologna
>>>>> Department of Computer Science
>>>>> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>>>>>
>>>>> Semantic Technology Laboratory (STLab)
>>>>> Institute for Cognitive Science and Technology (ISTC)
>>>>> National Research Council (CNR)
>>>>> Via Nomentana 56, 00161 Rome - Italy
>>>>>
>>>>>
>>>>> "I will give you everything, so long as you do not demand anything."
>>>>> (Ettore Petrolini, 1930)
>>>>>
>>>>> Not sent from my iSnobTechDevice
>>>>
>>>>
>>>
>>> --
>>> M.Sc. Alessandro Adamou
>>>
>>> Alma Mater Studiorum - Università di Bologna
>>> Department of Computer Science
>>> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>>>
>>> Semantic Technology Laboratory (STLab)
>>> Institute for Cognitive Science and Technology (ISTC)
>>> National Research Council (CNR)
>>> Via Nomentana 56, 00161 Rome - Italy
>>>
>>>
>>> "I will give you everything, so long as you do not demand anything."
>>> (Ettore Petrolini, 1930)
>>>
>>> Not sent from my iSnobTechDevice
>>>
>>
>
>
> --
> M.Sc. Alessandro Adamou
>
> Alma Mater Studiorum - Università di Bologna
> Department of Computer Science
> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>
> Semantic Technology Laboratory (STLab)
> Institute for Cognitive Science and Technology (ISTC)
> National Research Council (CNR)
> Via Nomentana 56, 00161 Rome - Italy
>
>
> "I will give you everything, so long as you do not demand anything."
> (Ettore Petrolini, 1930)
>
> Not sent from my iSnobTechDevice
>
--
| Rupert Westenthaler rupert.westenthaler@gmail.com
| Bodenlehenstraße 11 ++43-699-11108907
| A-5500 Bischofshofen
Re: Configuring a referenced site for Revyu
Posted by Alessandro Adamou <ad...@cs.unibo.it>.
Thanks a lot Rupert,
> The answer is very easy. The Sparql searcher uses N3 as default serialization and this SPARQL endpoint simple ignores that and returnes rdf+xml.
>
> If I change the default in the code to "application/rdf+xml" at least /find queries work as expected
>
> Maybe we should change the default to rdf+xml?
That could be an idea, but we should let the statistics decide. If there
are so many more that support rdf+xml and not n3, perhaps we should.
Update: if I use CoolURI for dereferencing and set the access URI as
simply http://revyu.com I do get some results. I would still prefer
Sparql, but I can work with this in the meantime.
Best,
Alessandro
> On 20.03.2012, at 16:24, Alessandro Adamou wrote:
>
>> Sorry again, I meant that the last three prefixes end with slashes.
>>
>> http://purl.org/stuff/rev#
>> http://revyu.com/things/
>> http://revyu.com/reviews/
>> http://revyu.com/people/
>>
>> For clarity, with these settings the referencedSiteMgr.getEntity(uri) is returning non-null but empty Entity objects, no matter if the entity URI exists or is made up.
>>
>> Best,
>> Alessandro
>>
>>
>> On 3/20/12 4:19 PM, Alessandro Adamou wrote:
>>> I add that it didn't work even after setting these entity prefixes:
>>>
>>> http://purl.org/stuff/rev#
>>> http://revyu.com/things
>>> http://revyu.com/reviews
>>> http://revyu.com/people
>>>
>>>
>>> On 3/20/12 4:07 PM, Alessandro Adamou wrote:
>>>> Hi Rupert,
>>>>
>>>> I've been trying to setup a referenced site for revyu.com, not caching to begin with, but I can't seem to be able to obtain entity signatures with my configuration.
>>>>
>>>> The Web version of the SPARQL endpoint (originally at http://revyu.com/sparql , supports GET with parameter "query") is at http://revyu.com/sparql/queryform
>>>>
>>>> Note from the example there that it accepts unprefixed references such as<people/tom> .
>>>>
>>>> It does resolve http://revyu.com/people/tom , although you always get a 303 See Other
>>>>
>>>> (e.g. http://revyu.com/people/tom/about/rdf if the request had "Accept: application/rdf+xml" , or http://revyu.com/people/tom/about/html for text/html)
>>>>
>>>> This is my site configuration (using sparql for dereferencing too). Any idea what I am doing wrong?
>>>>
>>>> ID = revyu
>>>> name = Revyu
>>>> Entity prefix = http://purl.org/stuff/rev#
>>>> Access URI = http://revyu.com/sparql
>>>> Dereferencer implementation = SPARQL
>>>> Query service = http://revyu.com/sparql
>>>> Searcher implementation = SPARQL
>>>> Default symbol state = proposed
>>>> Default mapping state = proposed
>>>> Expire = none
>>>> Cache strategy = never
>>>>
>>>> The entityhub debug log doesn't seem to throw errors, warnings or odd messages.
>>>>
>>>> Thanks
>>>>
>>>> Alessandro
>>>>
>>>> --
>>>> M.Sc. Alessandro Adamou
>>>>
>>>> Alma Mater Studiorum - Università di Bologna
>>>> Department of Computer Science
>>>> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>>>>
>>>> Semantic Technology Laboratory (STLab)
>>>> Institute for Cognitive Science and Technology (ISTC)
>>>> National Research Council (CNR)
>>>> Via Nomentana 56, 00161 Rome - Italy
>>>>
>>>>
>>>> "I will give you everything, so long as you do not demand anything."
>>>> (Ettore Petrolini, 1930)
>>>>
>>>> Not sent from my iSnobTechDevice
>>>
>>
>> --
>> M.Sc. Alessandro Adamou
>>
>> Alma Mater Studiorum - Università di Bologna
>> Department of Computer Science
>> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>>
>> Semantic Technology Laboratory (STLab)
>> Institute for Cognitive Science and Technology (ISTC)
>> National Research Council (CNR)
>> Via Nomentana 56, 00161 Rome - Italy
>>
>>
>> "I will give you everything, so long as you do not demand anything."
>> (Ettore Petrolini, 1930)
>>
>> Not sent from my iSnobTechDevice
>>
>
--
M.Sc. Alessandro Adamou
Alma Mater Studiorum - Università di Bologna
Department of Computer Science
Mura Anteo Zamboni 7, 40127 Bologna - Italy
Semantic Technology Laboratory (STLab)
Institute for Cognitive Science and Technology (ISTC)
National Research Council (CNR)
Via Nomentana 56, 00161 Rome - Italy
"I will give you everything, so long as you do not demand anything."
(Ettore Petrolini, 1930)
Not sent from my iSnobTechDevice
Re: Configuring a referenced site for Revyu
Posted by Rupert Westenthaler <ru...@salzburgresearch.at>.
Hi Alessandro
The answer is very easy. The Sparql searcher uses N3 as default serialization and this SPARQL endpoint simple ignores that and returnes rdf+xml.
If I change the default in the code to "application/rdf+xml" at least /find queries work as expected
Maybe we should change the default to rdf+xml?
best
Rupert
On 20.03.2012, at 16:24, Alessandro Adamou wrote:
> Sorry again, I meant that the last three prefixes end with slashes.
>
> http://purl.org/stuff/rev#
> http://revyu.com/things/
> http://revyu.com/reviews/
> http://revyu.com/people/
>
> For clarity, with these settings the referencedSiteMgr.getEntity(uri) is returning non-null but empty Entity objects, no matter if the entity URI exists or is made up.
>
> Best,
> Alessandro
>
>
> On 3/20/12 4:19 PM, Alessandro Adamou wrote:
>> I add that it didn't work even after setting these entity prefixes:
>>
>> http://purl.org/stuff/rev#
>> http://revyu.com/things
>> http://revyu.com/reviews
>> http://revyu.com/people
>>
>>
>> On 3/20/12 4:07 PM, Alessandro Adamou wrote:
>>> Hi Rupert,
>>>
>>> I've been trying to setup a referenced site for revyu.com, not caching to begin with, but I can't seem to be able to obtain entity signatures with my configuration.
>>>
>>> The Web version of the SPARQL endpoint (originally at http://revyu.com/sparql , supports GET with parameter "query") is at http://revyu.com/sparql/queryform
>>>
>>> Note from the example there that it accepts unprefixed references such as <people/tom> .
>>>
>>> It does resolve http://revyu.com/people/tom , although you always get a 303 See Other
>>>
>>> (e.g. http://revyu.com/people/tom/about/rdf if the request had "Accept: application/rdf+xml" , or http://revyu.com/people/tom/about/html for text/html)
>>>
>>> This is my site configuration (using sparql for dereferencing too). Any idea what I am doing wrong?
>>>
>>> ID = revyu
>>> name = Revyu
>>> Entity prefix = http://purl.org/stuff/rev#
>>> Access URI = http://revyu.com/sparql
>>> Dereferencer implementation = SPARQL
>>> Query service = http://revyu.com/sparql
>>> Searcher implementation = SPARQL
>>> Default symbol state = proposed
>>> Default mapping state = proposed
>>> Expire = none
>>> Cache strategy = never
>>>
>>> The entityhub debug log doesn't seem to throw errors, warnings or odd messages.
>>>
>>> Thanks
>>>
>>> Alessandro
>>>
>>> --
>>> M.Sc. Alessandro Adamou
>>>
>>> Alma Mater Studiorum - Università di Bologna
>>> Department of Computer Science
>>> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>>>
>>> Semantic Technology Laboratory (STLab)
>>> Institute for Cognitive Science and Technology (ISTC)
>>> National Research Council (CNR)
>>> Via Nomentana 56, 00161 Rome - Italy
>>>
>>>
>>> "I will give you everything, so long as you do not demand anything."
>>> (Ettore Petrolini, 1930)
>>>
>>> Not sent from my iSnobTechDevice
>>
>>
>
>
> --
> M.Sc. Alessandro Adamou
>
> Alma Mater Studiorum - Università di Bologna
> Department of Computer Science
> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>
> Semantic Technology Laboratory (STLab)
> Institute for Cognitive Science and Technology (ISTC)
> National Research Council (CNR)
> Via Nomentana 56, 00161 Rome - Italy
>
>
> "I will give you everything, so long as you do not demand anything."
> (Ettore Petrolini, 1930)
>
> Not sent from my iSnobTechDevice
>
Re: Configuring a referenced site for Revyu
Posted by Alessandro Adamou <ad...@cs.unibo.it>.
Sorry again, I meant that the last three prefixes end with slashes.
http://purl.org/stuff/rev#
http://revyu.com/things/
http://revyu.com/reviews/
http://revyu.com/people/
For clarity, with these settings the referencedSiteMgr.getEntity(uri) is
returning non-null but empty Entity objects, no matter if the entity URI
exists or is made up.
Best,
Alessandro
On 3/20/12 4:19 PM, Alessandro Adamou wrote:
> I add that it didn't work even after setting these entity prefixes:
>
> http://purl.org/stuff/rev#
> http://revyu.com/things
> http://revyu.com/reviews
> http://revyu.com/people
>
>
> On 3/20/12 4:07 PM, Alessandro Adamou wrote:
>> Hi Rupert,
>>
>> I've been trying to setup a referenced site for revyu.com, not
>> caching to begin with, but I can't seem to be able to obtain entity
>> signatures with my configuration.
>>
>> The Web version of the SPARQL endpoint (originally at
>> http://revyu.com/sparql , supports GET with parameter "query") is at
>> http://revyu.com/sparql/queryform
>>
>> Note from the example there that it accepts unprefixed references
>> such as <people/tom> .
>>
>> It does resolve http://revyu.com/people/tom , although you always get
>> a 303 See Other
>>
>> (e.g. http://revyu.com/people/tom/about/rdf if the request had
>> "Accept: application/rdf+xml" , or
>> http://revyu.com/people/tom/about/html for text/html)
>>
>> This is my site configuration (using sparql for dereferencing too).
>> Any idea what I am doing wrong?
>>
>> ID = revyu
>> name = Revyu
>> Entity prefix = http://purl.org/stuff/rev#
>> Access URI = http://revyu.com/sparql
>> Dereferencer implementation = SPARQL
>> Query service = http://revyu.com/sparql
>> Searcher implementation = SPARQL
>> Default symbol state = proposed
>> Default mapping state = proposed
>> Expire = none
>> Cache strategy = never
>>
>> The entityhub debug log doesn't seem to throw errors, warnings or odd
>> messages.
>>
>> Thanks
>>
>> Alessandro
>>
>> --
>> M.Sc. Alessandro Adamou
>>
>> Alma Mater Studiorum - Università di Bologna
>> Department of Computer Science
>> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>>
>> Semantic Technology Laboratory (STLab)
>> Institute for Cognitive Science and Technology (ISTC)
>> National Research Council (CNR)
>> Via Nomentana 56, 00161 Rome - Italy
>>
>>
>> "I will give you everything, so long as you do not demand anything."
>> (Ettore Petrolini, 1930)
>>
>> Not sent from my iSnobTechDevice
>
>
--
M.Sc. Alessandro Adamou
Alma Mater Studiorum - Università di Bologna
Department of Computer Science
Mura Anteo Zamboni 7, 40127 Bologna - Italy
Semantic Technology Laboratory (STLab)
Institute for Cognitive Science and Technology (ISTC)
National Research Council (CNR)
Via Nomentana 56, 00161 Rome - Italy
"I will give you everything, so long as you do not demand anything."
(Ettore Petrolini, 1930)
Not sent from my iSnobTechDevice
Re: Configuring a referenced site for Revyu
Posted by Alessandro Adamou <al...@istc.cnr.it>.
I add that it didn't work even after setting these entity prefixes:
http://purl.org/stuff/rev#
http://revyu.com/things
http://revyu.com/reviews
http://revyu.com/people
On 3/20/12 4:07 PM, Alessandro Adamou wrote:
> Hi Rupert,
>
> I've been trying to setup a referenced site for revyu.com, not caching
> to begin with, but I can't seem to be able to obtain entity signatures
> with my configuration.
>
> The Web version of the SPARQL endpoint (originally at
> http://revyu.com/sparql , supports GET with parameter "query") is at
> http://revyu.com/sparql/queryform
>
> Note from the example there that it accepts unprefixed references such
> as <people/tom> .
>
> It does resolve http://revyu.com/people/tom , although you always get
> a 303 See Other
>
> (e.g. http://revyu.com/people/tom/about/rdf if the request had
> "Accept: application/rdf+xml" , or
> http://revyu.com/people/tom/about/html for text/html)
>
> This is my site configuration (using sparql for dereferencing too).
> Any idea what I am doing wrong?
>
> ID = revyu
> name = Revyu
> Entity prefix = http://purl.org/stuff/rev#
> Access URI = http://revyu.com/sparql
> Dereferencer implementation = SPARQL
> Query service = http://revyu.com/sparql
> Searcher implementation = SPARQL
> Default symbol state = proposed
> Default mapping state = proposed
> Expire = none
> Cache strategy = never
>
> The entityhub debug log doesn't seem to throw errors, warnings or odd
> messages.
>
> Thanks
>
> Alessandro
>
> --
> M.Sc. Alessandro Adamou
>
> Alma Mater Studiorum - Università di Bologna
> Department of Computer Science
> Mura Anteo Zamboni 7, 40127 Bologna - Italy
>
> Semantic Technology Laboratory (STLab)
> Institute for Cognitive Science and Technology (ISTC)
> National Research Council (CNR)
> Via Nomentana 56, 00161 Rome - Italy
>
>
> "I will give you everything, so long as you do not demand anything."
> (Ettore Petrolini, 1930)
>
> Not sent from my iSnobTechDevice
--
M.Sc. Alessandro Adamou
Alma Mater Studiorum - Università di Bologna
Department of Computer Science
Mura Anteo Zamboni 7, 40127 Bologna - Italy
Semantic Technology Laboratory (STLab)
Institute for Cognitive Science and Technology (ISTC)
National Research Council (CNR)
Via Nomentana 56, 00161 Rome - Italy
"I will give you everything, so long as you do not demand anything."
(Ettore Petrolini, 1930)
Not sent from my iSnobTechDevice
Re: Configuring a referenced site for Revyu
Posted by Rupert Westenthaler <ru...@salzburgresearch.at>.
Hi Alessandro
On 20.03.2012, at 16:07, Alessandro Adamou wrote:
> Note from the example there that it accepts unprefixed references such as <people/tom> .
Correctly dealing with relative URIs needs an other small update to the SPARQL searcher as it currently does not provide any "baseURI" to the Clerezza parser. Because of that Clerezza adds a dummy prefix to URIs
Do you think it would make sense to parse the baseURI of the SPARQL endpoint? It would work for this example, but is this a typical setting for LinkedData? The alternative would be to let the user manually configure a baseURI.
best
Rupert