Re: Question about indexing in text search

[Andy Seaborne]

t;>     > You use tdbquery which does not understand text
indexes using
 >> it as
 >>      >> you
 >>      >>     > do.  By using --loc you are only querying your
base dataset,
 >> this
 >>      >> does not
 >>      >>     > include your text index so you don't get any results.
 >>      >>     >
 >>      >>     > I would try using the base sparql tool instead
passing in your
 >>      >>     > configuration file i.e.
 >>      >>     >
 >>      >>     > sparql --desc=index.ttl --query=queries.rq
 >>      >>     >
 >>      >>     > I am not 100% sure this will work because there
are two
 >> datasets
 >>      >> defined
 >>      >>     > in your config file (the base dataset and the text
indexed
 >> dataset)
 >>      >> and I
 >>      >>     > am not sure which one the sparql tool will pick by
default
 >>      >>     >
 >>      >>     > Rob
 >>      >>     >
 >>      >>     >
 >>      >>     >
 >>      >>     >
 >>      >>     > On 19/07/2018, 13:47, "Alysson Gomes" <
 >> alyssonas...@gmail.com <mailto:alyssonas...@gmail.com>>
 >>      >> wrote:
 >>      >>     >
 >>      >>     >     I'm using the file bin of the Jena:
 >>      >>     >     *tdbquery
 >>      >>     >
 >>      >> 
--loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en

 >>      >>     >     --query=queries.rq*
 >>      >>     >
 >>      >>     >     file *queries.rq*:
 >>      >>     >     *prefix text: <http://jena.apache.org/text#
 >>      >>     >     <http://jena.apache.org/text#>>select ?s
?owhere{    ?s
 >>      >> text:query(
 >>      >>     >     <http://dbpedia.org/property/first <
 >>      >> http://dbpedia.org/property/first
 >>      >>     > >>
 >>      >>     >     "David") ;    <http://dbpedia.org/property/first
     >>      >>     >     <http://dbpedia.org/property/first>> ?o}*
 >>      >>     >
 >>      >>     >     Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
 >>      >> rve...@dotnetrdf.org <mailto:rve...@dotnetrdf.org>>
 >>      >>     >     escreveu:
 >>      >>     >
 >>      >>     >     > You still didn’t state how you execute the
query, you
 >> included
 >>      >>     > commands
 >>      >>     >     > for creating the database and index but not the
 >> command/code
 >>      >> that
 >>      >>     > actually
 >>      >>     >     > makes the query
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     > Please show exactly how you are submitting
your query
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     > Rob
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     > From: Alysson Gomes mailto:alyssonas...@gmail.com>>
 >>      >>     >     > Reply-To: mailto:users@jena.apache.org>>
 >>      >>     >     > Date: Wednesday, 18 July 2018 at 20:15
 >>      >>     >     > To: mailto:users@jena.apache.org>>
 >>      >>     >     > Subject: Re: Question about indexing in text
search
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     > Are using the following commands:
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     >
 >>      >>     >     > Loading dataset
 >>      >>     >     >
 >>      >>     >     > $JENAROOT/bin/tdbloader
 >>      >&g

Re: Question about indexing in text search

[Alysson Gomes]

 get any results.
> >>  >> >
> >>  >> > I would try using the base sparql tool instead passing in
> your
> >>  >> > configuration file i.e.
> >>  >> >
> >>  >> > sparql --desc=index.ttl --query=queries.rq
> >>  >> >
> >>  >> > I am not 100% sure this will work because there are two
> >> datasets
> >>  >> defined
> >>  >> > in your config file (the base dataset and the text indexed
> >> dataset)
> >>  >> and I
> >>  >> > am not sure which one the sparql tool will pick by default
> >>  >> >
> >>  >> > Rob
> >>  >> >
> >>  >> >
> >>  >> >
> >>  >> >
> >>  >> > On 19/07/2018, 13:47, "Alysson Gomes" <
> >> alyssonas...@gmail.com>
> >>  >> wrote:
> >>  >> >
> >>  >> > I'm using the file bin of the Jena:
> >>  >> > *tdbquery
> >>  >> >
> >>  >>
> --loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
> >>  >> > --query=queries.rq*
> >>  >> >
> >>  >> > file *queries.rq*:
> >>  >> > *prefix text: <http://jena.apache.org/text#
> >>  >> > <http://jena.apache.org/text#>>select ?s ?owhere{
> ?s
> >>  >> text:query(
> >>  >> > <http://dbpedia.org/property/first <
> >>  >> http://dbpedia.org/property/first
> >>  >> > >>
> >>  >> > "David") ;<http://dbpedia.org/property/first
> >>  >> > <http://dbpedia.org/property/first>> ?o}*
> >>  >> >
> >>  >> > Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
> >>  >> rve...@dotnetrdf.org>
> >>  >> > escreveu:
> >>  >> >
> >>  >> > > You still didn’t state how you execute the query,
> you
> >> included
> >>  >> > commands
> >>  >> > > for creating the database and index but not the
> >> command/code
> >>  >> that
> >>  >> > actually
> >>  >> > > makes the query
> >>  >> > >
> >>  >> > >
> >>  >> > >
> >>  >> > > Please show exactly how you are submitting your
> query
> >>  >> > >
> >>  >> > >
> >>  >> > >
> >>  >> > > Rob
> >>  >> > >
> >>  >> > >
> >>  >> > >
> >>  >> > > From: Alysson Gomes 
> >>  >> > > Reply-To: 
> >>  >> > > Date: Wednesday, 18 July 2018 at 20:15
> >>  >> > > To: 
> >>  >> > > Subject: Re: Question about indexing in text search
> >>  >> > >
> >>  >> > >
> >>  >> > >
> >>  >> > > Are using the following commands:
> >>  >> > >
> >>  >> > >
> >>  >> > >
> >>  >> > > Loading dataset
> >>  >> > >
> >>  >> > > $JENAROOT/bin/tdbloader
> >>  >> > >
> >>  >>
> -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
> >>  >> > > tdb_citation.ttl
> >>  >> > >
> >>  >> > >
> >>  >> > >
> >>  >> > > Create index:
> >>  >> > >
> >>  >> > > java -cp
> >>  >> > >
> >>  >> >

Re: Question about indexing in text search

[Andy Seaborne]

<
 >> http://dbpedia.org/property/first
 >> > >>
 >> > "David") ;<http://dbpedia.org/property/first
 >> > <http://dbpedia.org/property/first>> ?o}*
 >> >
 >> > Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
 >> rve...@dotnetrdf.org>
 >> > escreveu:
 >> >
 >> > > You still didn’t state how you execute the query, you
included
 >> > commands
 >> > > for creating the database and index but not the
command/code
 >> that
 >> > actually
 >> > > makes the query
 >> > >
 >> > >
 >> > >
 >> > > Please show exactly how you are submitting your query
 >> > >
 >> > >
 >> > >
 >> > > Rob
 >> > >
 >> > >
 >> > >
 >> > > From: Alysson Gomes 
 >> > > Reply-To: 
 >> > > Date: Wednesday, 18 July 2018 at 20:15
 >> > > To: 
 >> > > Subject: Re: Question about indexing in text search
 >> > >
 >> > >
 >> > >
 >> > > Are using the following commands:
 >> > >
 >> > >
 >> > >
 >> > > Loading dataset
 >> > >
 >> > > $JENAROOT/bin/tdbloader
 >> > >
 >> -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
 >> > > tdb_citation.ttl
 >> > >
 >> > >
 >> > >
 >> > > Create index:
 >> > >
 >> > > java -cp
 >> > >
 >> >
 >>
/home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
 >> > > jena.textindexer --desc=index.ttl
 >> > >
 >> > >
 >> > >
 >> > > While the command above is running appear the following
 >> result:
 >> > >
 >> > >
 >> > >
 >> > > After the creation of the index, I execute the query:
 >> > >
 >> > >
 >> > >
 >> > > prefix text: <http://jena.apache.org/text#>
 >> > >
 >> > > select ?s ?o
 >> > >
 >> > > where{
 >> > >
 >> > > ?s text:query( <http://dbpedia.org/property/first>
 >> "David") ;
 >>     > >
 >> >     > <http://dbpedia.org/property/first> ?o
 >> > >
 >> > > }
 >> > >
 >> > >
 >> > >
 >> > > These are all commands that I'm using.
 >> > >
 >> > >
 >> > >
 >> > > Em qua, 18 de jul de 2018 às 13:13, Rob Vesse <
 >> rve...@dotnetrdf.org>
 >> > > escreveu:
 >> > >
 >> > > There is nothing obviously wrong with your
configuration.
 >> You still
 >> > > haven’t shown the code that you are using with this
 >> configuration to
 >> > make
 >> > > your query.
 >> > >
 >> > >
 >> > >
 >> > > My guess would be that perhaps your code is loading in
the
 >> base
 >> > dataset
 >> > > without the indexing support i.e. you may be querying
the base
 >> > dataset
 >> > > rather than the text dataset, but without having seen
your
 >> code
 >> > that’s only
 >> > > a guess.
 >> > >
 >> > >
 >> > >
 >> > > Rob
 >

Re: Question about indexing in text search

[Alysson Gomes]

avid") ;<http://dbpedia.org/property/first
> >> > <http://dbpedia.org/property/first>> ?o}*
> >>     >
> >> > Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
> >> rve...@dotnetrdf.org>
> >> > escreveu:
> >> >
> >> > > You still didn’t state how you execute the query, you
> included
> >> > commands
> >> > > for creating the database and index but not the
> command/code
> >> that
> >> > actually
> >> > > makes the query
> >> > >
> >> > >
> >> > >
> >> > > Please show exactly how you are submitting your query
> >> > >
> >> > >
> >> > >
> >> > > Rob
> >> > >
> >> > >
> >> > >
> >> > > From: Alysson Gomes 
> >> > > Reply-To: 
> >> > > Date: Wednesday, 18 July 2018 at 20:15
> >> > > To: 
> >> > > Subject: Re: Question about indexing in text search
> >> > >
> >> > >
> >> > >
> >> > > Are using the following commands:
> >> > >
> >> > >
> >> > >
> >> > > Loading dataset
> >> > >
> >> > > $JENAROOT/bin/tdbloader
> >> > >
> >> -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
> >> > > tdb_citation.ttl
> >> > >
> >> > >
> >> > >
> >> > > Create index:
> >> > >
> >> > > java -cp
> >> > >
> >> >
> >>
> /home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
> >> > > jena.textindexer --desc=index.ttl
> >> > >
> >> > >
> >> > >
> >> > > While the command above is running appear the following
> >> result:
> >> > >
> >> > >
> >> > >
> >> > > After the creation of the index, I execute the query:
> >> > >
> >> > >
> >> > >
>     >> > > prefix text: <http://jena.apache.org/text#>
> >> > >
> >> > > select ?s ?o
> >> > >
> >> > > where{
> >> > >
> >> > > ?s text:query( <http://dbpedia.org/property/first>
> >> "David") ;
> >> > >
> >> > > <http://dbpedia.org/property/first> ?o
> >> > >
> >> > > }
> >> > >
> >> > >
> >> > >
> >> > > These are all commands that I'm using.
> >> > >
> >> > >
> >> > >
> >> > > Em qua, 18 de jul de 2018 às 13:13, Rob Vesse <
> >> rve...@dotnetrdf.org>
> >> > > escreveu:
> >> > >
> >> > > There is nothing obviously wrong with your
> configuration.
> >> You still
> >> > > haven’t shown the code that you are using with this
> >> configuration to
> >> > make
> >> > > your query.
> >> > >
> >> > >
> >> > >
> >> > > My guess would be that perhaps your code is loading in
> the
> >> base
> >> > dataset
> >> > > without the indexing support i.e. you may be querying
> the base
> >> > dataset
> >> > > rather than the text dataset, but wi

Re: Question about indexing in text search

[Rob Vesse]

Alysson

It was briefly discussed on the dev list.  The conclusion is that what you are 
trying to do isn't supported as a pure command line task currently.  You will 
need to write code or use the Fuseki web server to achieve what you want

Rob that

On 06/08/2018, 18:15, "Alysson Gomes"  wrote:

Hi Rob!
Still about this problem of indexing, do you have some suggestion?

Em qui, 19 de jul de 2018 às 13:59, Alysson Gomes 
escreveu:

> I did, but as you told the sparql launched an exception:
> org.apache.jena.sparql.ARQException: Found two matches: var ?root ->
> http://localhost/jena_example/#text_dataset,
> 
file:///home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en-fuseki-index/index.ttl#dataset
>
>
> Em qui, 19 de jul de 2018 às 13:13, Rob Vesse 
> escreveu:
>
>> No I can't, the documentation is doing the right thing. A text dataset is
>> fundamentally a wrapper around another dataset so any text indexing 
config
>> will always require at least two datasets in the configuration file.
>>
>> Did you try using the sparql tool instead as I suggested?
>>
>> Rob
>>
>> On 19/07/2018, 15:25, "Alysson Gomes"  wrote:
>>
>> Are do you can send an example of a configuration file with only one
>> dataset that contains the index? Because I'm based me in the examples
>> of
>> the documentation (is must similar to the configuration that I'm
>> using).
>>
>> Em qui, 19 de jul de 2018 às 10:04, Rob Vesse 
>> escreveu:
>>
>> > Thanks, so your problem was as I suspected
>> >
>> > You use tdbquery which does not understand text indexes using it as
>> you
>> > do.  By using --loc you are only querying your base dataset, this
>> does not
>> > include your text index so you don't get any results.
>> >
>> > I would try using the base sparql tool instead passing in your
>> > configuration file i.e.
>> >
>> > sparql --desc=index.ttl --query=queries.rq
>> >
>> > I am not 100% sure this will work because there are two datasets
>> defined
>> > in your config file (the base dataset and the text indexed dataset)
>> and I
>> > am not sure which one the sparql tool will pick by default
>> >
>> > Rob
>> >
>> >
>> >
>> >
>> > On 19/07/2018, 13:47, "Alysson Gomes" 
>> wrote:
>> >
>> > I'm using the file bin of the Jena:
>> > *tdbquery
>> >
>>  --loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
>> > --query=queries.rq*
>> >
>> > file *queries.rq*:
>> > *prefix text: <http://jena.apache.org/text#
>> > <http://jena.apache.org/text#>>select ?s ?owhere{?s
>> text:query(
>> > <http://dbpedia.org/property/first <
>> http://dbpedia.org/property/first
>> > >>
>> > "David") ;<http://dbpedia.org/property/first
>> > <http://dbpedia.org/property/first>> ?o}*
>> >
>> > Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
>> rve...@dotnetrdf.org>
>> > escreveu:
>> >
>> > > You still didn’t state how you execute the query, you 
included
    >>     > commands
>> > > for creating the database and index but not the command/code
>> that
>> > actually
>> > > makes the query
>> > >
>> > >
>> > >
>> > > Please show exactly how you are submitting your query
>> > >
>> > >
>> > >
>> > > Rob
>> > >
>> > >
>> > >
>> > > From: Alysson Gomes 
>> > > Reply-To: 
>> > > Date: Wednesday, 18 July 2018 at 20:15
>> > > To: 
>> > > Subject: Re: Question about ind

Re: Question about indexing in text search

[Alysson Gomes]

Hi Rob!
Still about this problem of indexing, do you have some suggestion?

Em qui, 19 de jul de 2018 às 13:59, Alysson Gomes 
escreveu:

> I did, but as you told the sparql launched an exception:
> org.apache.jena.sparql.ARQException: Found two matches: var ?root ->
> http://localhost/jena_example/#text_dataset,
> file:///home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en-fuseki-index/index.ttl#dataset
>
>
> Em qui, 19 de jul de 2018 às 13:13, Rob Vesse 
> escreveu:
>
>> No I can't, the documentation is doing the right thing. A text dataset is
>> fundamentally a wrapper around another dataset so any text indexing config
>> will always require at least two datasets in the configuration file.
>>
>> Did you try using the sparql tool instead as I suggested?
>>
>> Rob
>>
>> On 19/07/2018, 15:25, "Alysson Gomes"  wrote:
>>
>> Are do you can send an example of a configuration file with only one
>> dataset that contains the index? Because I'm based me in the examples
>> of
>> the documentation (is must similar to the configuration that I'm
>> using).
>>
>> Em qui, 19 de jul de 2018 às 10:04, Rob Vesse 
>> escreveu:
>>
>> > Thanks, so your problem was as I suspected
>> >
>> > You use tdbquery which does not understand text indexes using it as
>> you
>> > do.  By using --loc you are only querying your base dataset, this
>> does not
>> > include your text index so you don't get any results.
>> >
>> > I would try using the base sparql tool instead passing in your
>> > configuration file i.e.
>> >
>> > sparql --desc=index.ttl --query=queries.rq
>> >
>> > I am not 100% sure this will work because there are two datasets
>> defined
>> > in your config file (the base dataset and the text indexed dataset)
>> and I
>> > am not sure which one the sparql tool will pick by default
>> >
>> > Rob
>> >
>> >
>> >
>> >
>> > On 19/07/2018, 13:47, "Alysson Gomes" 
>> wrote:
>> >
>> > I'm using the file bin of the Jena:
>> > *tdbquery
>> >
>>  --loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
>> > --query=queries.rq*
>> >
>> > file *queries.rq*:
>> > *prefix text: <http://jena.apache.org/text#
>> > <http://jena.apache.org/text#>>select ?s ?owhere{?s
>> text:query(
>> > <http://dbpedia.org/property/first <
>> http://dbpedia.org/property/first
>> > >>
>> > "David") ;<http://dbpedia.org/property/first
>> > <http://dbpedia.org/property/first>> ?o}*
>> >
>> > Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
>> rve...@dotnetrdf.org>
>> > escreveu:
>> >
>> >     > You still didn’t state how you execute the query, you included
>> > commands
>> > > for creating the database and index but not the command/code
>> that
>> > actually
>> > > makes the query
>> > >
>> > >
>> > >
>> > > Please show exactly how you are submitting your query
>> > >
>> > >
>> > >
>> > > Rob
>> > >
>> > >
>> > >
>> > > From: Alysson Gomes 
>> > > Reply-To: 
>> > > Date: Wednesday, 18 July 2018 at 20:15
>> > > To: 
>> > > Subject: Re: Question about indexing in text search
>> > >
>> > >
>> > >
>> > > Are using the following commands:
>> > >
>> > >
>> > >
>> > > Loading dataset
>> > >
>> > > $JENAROOT/bin/tdbloader
>> > >
>> -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
>> > > tdb_citation.ttl
>> > >
>> > >
>> > >
>> > > Create index:
>> > >
>> > > java -cp
>> > >
>> >
>> /home/alysson/MEGA/Computação

Re: Question about indexing in text search

[Alysson Gomes]

I did, but as you told the sparql launched an exception:
org.apache.jena.sparql.ARQException: Found two matches: var ?root ->
http://localhost/jena_example/#text_dataset,
file:///home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en-fuseki-index/index.ttl#dataset


Em qui, 19 de jul de 2018 às 13:13, Rob Vesse 
escreveu:

> No I can't, the documentation is doing the right thing. A text dataset is
> fundamentally a wrapper around another dataset so any text indexing config
> will always require at least two datasets in the configuration file.
>
> Did you try using the sparql tool instead as I suggested?
>
> Rob
>
> On 19/07/2018, 15:25, "Alysson Gomes"  wrote:
>
> Are do you can send an example of a configuration file with only one
> dataset that contains the index? Because I'm based me in the examples
> of
> the documentation (is must similar to the configuration that I'm
> using).
>
> Em qui, 19 de jul de 2018 às 10:04, Rob Vesse 
> escreveu:
>
> > Thanks, so your problem was as I suspected
> >
> > You use tdbquery which does not understand text indexes using it as
> you
> > do.  By using --loc you are only querying your base dataset, this
> does not
> > include your text index so you don't get any results.
> >
> > I would try using the base sparql tool instead passing in your
> > configuration file i.e.
> >
> > sparql --desc=index.ttl --query=queries.rq
> >
> > I am not 100% sure this will work because there are two datasets
> defined
> > in your config file (the base dataset and the text indexed dataset)
> and I
> > am not sure which one the sparql tool will pick by default
> >
> > Rob
> >
> >
> >
> >
> > On 19/07/2018, 13:47, "Alysson Gomes" 
> wrote:
> >
> > I'm using the file bin of the Jena:
> > *tdbquery
> >
>  --loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
> > --query=queries.rq*
> >
> > file *queries.rq*:
> > *prefix text: <http://jena.apache.org/text#
> > <http://jena.apache.org/text#>>select ?s ?owhere{?s
> text:query(
> > <http://dbpedia.org/property/first <
> http://dbpedia.org/property/first
> > >>
> > "David") ;<http://dbpedia.org/property/first
> > <http://dbpedia.org/property/first>> ?o}*
> >
> > Em qui, 19 de jul de 2018 às 05:56, Rob Vesse <
> rve...@dotnetrdf.org>
> > escreveu:
> >
> > > You still didn’t state how you execute the query, you included
> > commands
> > > for creating the database and index but not the command/code
> that
> > actually
> > > makes the query
> > >
> > >
> > >
> > > Please show exactly how you are submitting your query
> > >
> > >
> > >
> > > Rob
> > >
> > >
> > >
> > > From: Alysson Gomes 
> > > Reply-To: 
> > > Date: Wednesday, 18 July 2018 at 20:15
> > > To: 
> > > Subject: Re: Question about indexing in text search
> > >
> > >
> > >
> > > Are using the following commands:
> > >
> > >
> > >
> > > Loading dataset
> > >
> > > $JENAROOT/bin/tdbloader
> > >
> -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
> > > tdb_citation.ttl
> > >
> > >
> > >
> > > Create index:
> > >
> > > java -cp
> > >
> >
> /home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
> > > jena.textindexer --desc=index.ttl
> > >
> > >
> > >
> > > While the command above is running appear the following result:
> > >
> > >
> > >
> > > After the creation of the index, I execute the query:
> > >
> > >
> > >
> > > prefix text: <http://jena.apache.org/text#>
> > >
> > > select ?s ?o
>

Re: Question about indexing in text search

[Rob Vesse]

No I can't, the documentation is doing the right thing. A text dataset is 
fundamentally a wrapper around another dataset so any text indexing config will 
always require at least two datasets in the configuration file.

Did you try using the sparql tool instead as I suggested?

Rob

On 19/07/2018, 15:25, "Alysson Gomes"  wrote:

Are do you can send an example of a configuration file with only one
dataset that contains the index? Because I'm based me in the examples of
the documentation (is must similar to the configuration that I'm using).

Em qui, 19 de jul de 2018 às 10:04, Rob Vesse 
escreveu:

> Thanks, so your problem was as I suspected
>
> You use tdbquery which does not understand text indexes using it as you
> do.  By using --loc you are only querying your base dataset, this does not
> include your text index so you don't get any results.
>
> I would try using the base sparql tool instead passing in your
> configuration file i.e.
>
> sparql --desc=index.ttl --query=queries.rq
>
> I am not 100% sure this will work because there are two datasets defined
> in your config file (the base dataset and the text indexed dataset) and I
> am not sure which one the sparql tool will pick by default
>
> Rob
>
>
>
>
> On 19/07/2018, 13:47, "Alysson Gomes"  wrote:
>
> I'm using the file bin of the Jena:
> *tdbquery
> --loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
> --query=queries.rq*
>
> file *queries.rq*:
> *prefix text: <http://jena.apache.org/text#
> <http://jena.apache.org/text#>>select ?s ?owhere{?s text:query(
> <http://dbpedia.org/property/first <http://dbpedia.org/property/first
> >>
> "David") ;<http://dbpedia.org/property/first
> <http://dbpedia.org/property/first>> ?o}*
>
> Em qui, 19 de jul de 2018 às 05:56, Rob Vesse 
> escreveu:
>
> > You still didn’t state how you execute the query, you included
> commands
> > for creating the database and index but not the command/code that
> actually
> > makes the query
> >
> >
> >
> > Please show exactly how you are submitting your query
> >
> >
>     >
> > Rob
> >
> >
> >
> > From: Alysson Gomes 
> > Reply-To: 
> > Date: Wednesday, 18 July 2018 at 20:15
> > To: 
> > Subject: Re: Question about indexing in text search
> >
> >
> >
> > Are using the following commands:
> >
> >
> >
> > Loading dataset
> >
> > $JENAROOT/bin/tdbloader
> > -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
> > tdb_citation.ttl
> >
> >
> >
> > Create index:
> >
> > java -cp
> >
> 
/home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
> > jena.textindexer --desc=index.ttl
> >
> >
> >
> > While the command above is running appear the following result:
> >
> >
> >
> > After the creation of the index, I execute the query:
> >
> >
> >
> > prefix text: <http://jena.apache.org/text#>
> >
> > select ?s ?o
> >
> > where{
> >
> > ?s text:query( <http://dbpedia.org/property/first> "David") ;
> >
> > <http://dbpedia.org/property/first> ?o
> >
> > }
> >
> >
> >
> > These are all commands that I'm using.
> >
> >
> >
> > Em qua, 18 de jul de 2018 às 13:13, Rob Vesse 
> > escreveu:
> >
> > There is nothing obviously wrong with your configuration.  You still
> > haven’t shown the code that you are using with this configuration to
> make
> > your query.
> >
> >
> >
> > My guess would be that perhaps your code is loading in the base
> dataset
> > without the indexing support 

Re: Question about indexing in text search

[Alysson Gomes]

Are do you can send an example of a configuration file with only one
dataset that contains the index? Because I'm based me in the examples of
the documentation (is must similar to the configuration that I'm using).

Em qui, 19 de jul de 2018 às 10:04, Rob Vesse 
escreveu:

> Thanks, so your problem was as I suspected
>
> You use tdbquery which does not understand text indexes using it as you
> do.  By using --loc you are only querying your base dataset, this does not
> include your text index so you don't get any results.
>
> I would try using the base sparql tool instead passing in your
> configuration file i.e.
>
> sparql --desc=index.ttl --query=queries.rq
>
> I am not 100% sure this will work because there are two datasets defined
> in your config file (the base dataset and the text indexed dataset) and I
> am not sure which one the sparql tool will pick by default
>
> Rob
>
>
>
>
> On 19/07/2018, 13:47, "Alysson Gomes"  wrote:
>
> I'm using the file bin of the Jena:
> *tdbquery
> --loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
> --query=queries.rq*
>
> file *queries.rq*:
> *prefix text: <http://jena.apache.org/text#
> <http://jena.apache.org/text#>>select ?s ?owhere{?s text:query(
> <http://dbpedia.org/property/first <http://dbpedia.org/property/first
> >>
> "David") ;<http://dbpedia.org/property/first
> <http://dbpedia.org/property/first>> ?o}*
>
> Em qui, 19 de jul de 2018 às 05:56, Rob Vesse 
> escreveu:
>
> > You still didn’t state how you execute the query, you included
> commands
> > for creating the database and index but not the command/code that
> actually
> > makes the query
> >
> >
> >
> > Please show exactly how you are submitting your query
> >
> >
> >
> > Rob
> >
> >
> >
> > From: Alysson Gomes 
> > Reply-To: 
> > Date: Wednesday, 18 July 2018 at 20:15
> > To: 
> > Subject: Re: Question about indexing in text search
> >
> >
> >
> > Are using the following commands:
> >
> >
> >
> > Loading dataset
> >
> > $JENAROOT/bin/tdbloader
> > -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
> > tdb_citation.ttl
> >
> >
> >
> > Create index:
> >
> > java -cp
> >
> /home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
> > jena.textindexer --desc=index.ttl
> >
> >
> >
> > While the command above is running appear the following result:
> >
> >
> >
> > After the creation of the index, I execute the query:
> >
> >
> >
> > prefix text: <http://jena.apache.org/text#>
> >
> > select ?s ?o
> >
> > where{
> >
> > ?s text:query( <http://dbpedia.org/property/first> "David") ;
> >
> > <http://dbpedia.org/property/first> ?o
> >
> > }
> >
> >
> >
> > These are all commands that I'm using.
> >
> >
> >
> > Em qua, 18 de jul de 2018 às 13:13, Rob Vesse 
> > escreveu:
> >
> > There is nothing obviously wrong with your configuration.  You still
> > haven’t shown the code that you are using with this configuration to
> make
> > your query.
> >
> >
> >
> > My guess would be that perhaps your code is loading in the base
> dataset
> > without the indexing support i.e. you may be querying the base
> dataset
> > rather than the text dataset, but without having seen your code
> that’s only
> > a guess.
> >
> >
> >
> > Rob
> >
> >
> >
> > From: Alysson Gomes 
> > Reply-To: 
> > Date: Wednesday, 18 July 2018 at 14:55
> > To: 
> > Subject: Re: Question about indexing in text search
> >
> >
> >
> > Hi Rob!
> >
> > I attached the file with the code of the text index (file index.ttl)
> but
> > to facility it, follow the image:
> >
> >
> >
> > Error! Filename not specified.
> >
> > I'm using the same queries of the previous mail. Cas

Re: Question about indexing in text search

[Alysson Gomes]

I'm using the file bin of the Jena:
*tdbquery
--loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en
--query=queries.rq*

file *queries.rq*:
*prefix text: <http://jena.apache.org/text#
<http://jena.apache.org/text#>>select ?s ?owhere{?s text:query(
<http://dbpedia.org/property/first <http://dbpedia.org/property/first>>
"David") ;<http://dbpedia.org/property/first
<http://dbpedia.org/property/first>> ?o}*

Em qui, 19 de jul de 2018 às 05:56, Rob Vesse 
escreveu:

> You still didn’t state how you execute the query, you included commands
> for creating the database and index but not the command/code that actually
> makes the query
>
>
>
> Please show exactly how you are submitting your query
>
>
>
> Rob
>
>
>
> From: Alysson Gomes 
> Reply-To: 
> Date: Wednesday, 18 July 2018 at 20:15
> To: 
> Subject: Re: Question about indexing in text search
>
>
>
> Are using the following commands:
>
>
>
> Loading dataset
>
> $JENAROOT/bin/tdbloader
> -loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
> tdb_citation.ttl
>
>
>
> Create index:
>
> java -cp
> /home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
> jena.textindexer --desc=index.ttl
>
>
>
> While the command above is running appear the following result:
>
>
>
> After the creation of the index, I execute the query:
>
>
>
> prefix text: <http://jena.apache.org/text#>
>
> select ?s ?o
>
> where{
>
> ?s text:query( <http://dbpedia.org/property/first> "David") ;
>
> <http://dbpedia.org/property/first> ?o
>
> }
>
>
>
> These are all commands that I'm using.
>
>
>
> Em qua, 18 de jul de 2018 às 13:13, Rob Vesse 
> escreveu:
>
> There is nothing obviously wrong with your configuration.  You still
> haven’t shown the code that you are using with this configuration to make
> your query.
>
>
>
> My guess would be that perhaps your code is loading in the base dataset
> without the indexing support i.e. you may be querying the base dataset
> rather than the text dataset, but without having seen your code that’s only
> a guess.
>
>
>
> Rob
>
>
>
> From: Alysson Gomes 
> Reply-To: 
> Date: Wednesday, 18 July 2018 at 14:55
> To: 
> Subject: Re: Question about indexing in text search
>
>
>
> Hi Rob!
>
> I attached the file with the code of the text index (file index.ttl) but
> to facility it, follow the image:
>
>
>
> Error! Filename not specified.
>
> I'm using the same queries of the previous mail. Case has something wrong,
> please indicate it some solution.
>
>
>
> Em qua, 18 de jul de 2018 às 10:12, Rob Vesse 
> escreveu:
>
> This is a misunderstanding, not a bug.  Property functions use the SPARQL
> collection syntax i.e. ( <http://dbpedia.org/property/first> “David”) to
> pass arguments to the function which is given as the predicate, in this
> case text:query. The rdf:first/rdf:rest you see in the logs is simply the
> expansion of that into triple patterns which later gets extracted out into
> the actual property function call.  The fact that those happen to be
> similar to the property you’re are trying to search on is purely
> coincidental.
>
>
>
> If your query is not working as expected then the actual problem is
> elsewhere, likely in the configuration of your text index.  So you would
> need to share that configuration and show how you actually execute your
> query if you want further help with this.
>
>
>
> Regards,
>
>
> Rob
>
>
>
> From: Alysson Gomes 
> Reply-To: 
> Date: Wednesday, 18 July 2018 at 13:42
> To: "users@jena.apache.org" 
> Subject: Question about indexing in text search
>
> Hello, my name is Alysson, I am a master's student in the Pontifical
> Catholic University of Rio de Janeiro and am having problems with the
> indexing in text search.
>
> In the attach 1 contains the assembler that I'm using for to index the
> triples that contain the predicate <http://dbpedia.org/property/first>.
>
> My goal is to reproduce the query [1] using an index, but the problem is
> that when I execute the query [2] the URI used by the query processor is
> different of the URI that I am using in the predicate, as show image below:
>
>
> Error! Filename not specified.
>
> As show in the image above, the query processor uses the URI <
> http://www.w3.org/1999/02/22-rdf-syntax-ns> generating a result
> incorrect.
>
> I want to know if it is possible to change this or if I am doing some
> wrong.
>
> Since I thank you for the help.
>
>
>
>
>
> [1]: Query
>
> SELECT ?s ?o
>
> WHERE {
>
> ?s <http://dbpedia.org/property/first> ?o
>
> filter regex(?o, "David", "i")
>
> }
>
>
>
> [2]: Query
>
> PREFIX text: <http://jena.apache.org/text#>
>
> SELECT ?s ?o
>
> WHERE {
>
> ?s text:query( <http://dbpedia.org/property/first> "David") ;
>
> <http://dbpedia.org/property/first> ?o
>
> }
>
>

Re: Question about indexing in text search

[Alysson Gomes]

Are using the following commands:

Loading dataset
*$JENAROOT/bin/tdbloader
-loc=/home/alysson/Documents/PUC-Rio/TestJena/tdb2-citation-data-en
tdb_citation.ttl *

Create index:
*java -cp
/home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar
jena.textindexer --desc=index.ttl*

While the command above is running appear the following result:

[image: Screenshot from 2018-07-18 14-34-15.png]
After the creation of the index, I execute the query:

*prefix text: <http://jena.apache.org/text# <http://jena.apache.org/text#>>*
*select ?s ?o*
*where{*
*?s text:query( <http://dbpedia.org/property/first
<http://dbpedia.org/property/first>> "David") ;
<http://dbpedia.org/property/first <http://dbpedia.org/property/first>> ?o*
*}*

These are all commands that I'm using.

Em qua, 18 de jul de 2018 às 13:13, Rob Vesse 
escreveu:

> There is nothing obviously wrong with your configuration.  You still
> haven’t shown the code that you are using with this configuration to make
> your query.
>
>
>
> My guess would be that perhaps your code is loading in the base dataset
> without the indexing support i.e. you may be querying the base dataset
> rather than the text dataset, but without having seen your code that’s only
> a guess.
>
>
>
> Rob
>
>
>
> *From: *Alysson Gomes 
> *Reply-To: *
> *Date: *Wednesday, 18 July 2018 at 14:55
> *To: *
> *Subject: *Re: Question about indexing in text search
>
>
>
> Hi Rob!
>
> I attached the file with the code of the text index (file *index.ttl*)
> but to facility it, follow the image:
>
>
>
> [image: Screenshot from 2018-07-18 10-34-38.png]
>
> I'm using the same queries of the previous mail. Case has something wrong,
> please indicate it some solution.
>
>
>
> Em qua, 18 de jul de 2018 às 10:12, Rob Vesse 
> escreveu:
>
> This is a misunderstanding, not a bug.  Property functions use the SPARQL
> collection syntax i.e. ( <http://dbpedia.org/property/first> “David”) to
> pass arguments to the function which is given as the predicate, in this
> case text:query. The rdf:first/rdf:rest you see in the logs is simply the
> expansion of that into triple patterns which later gets extracted out into
> the actual property function call.  The fact that those happen to be
> similar to the property you’re are trying to search on is purely
> coincidental.
>
>
>
> If your query is not working as expected then the actual problem is
> elsewhere, likely in the configuration of your text index.  So you would
> need to share that configuration and show how you actually execute your
> query if you want further help with this.
>
>
>
> Regards,
>
>
> Rob
>
>
>
> *From: *Alysson Gomes 
> *Reply-To: *
> *Date: *Wednesday, 18 July 2018 at 13:42
> *To: *"users@jena.apache.org" 
> *Subject: *Question about indexing in text search
>
> Hello, my name is Alysson, I am a master's student in the Pontifical
> Catholic University of Rio de Janeiro and am having problems with the
> indexing in text search.
>
> In the* attach 1* contains the assembler that I'm using for to index the
> triples that contain the predicate *<http://dbpedia.org/property/first
> <http://dbpedia.org/property/first>>.*
>
> My goal is to reproduce the query *[1]* using an index, but the problem
> is that when I execute the query *[2]* the URI used by the query
> processor is different of the URI that I am using in the predicate, as
> show image below:
>
>
> *Error! Filename not specified.*
>
> As show in the image above, the query processor uses the URI *<*
> http://www.w3.org/1999/02/22-rdf-syntax-ns> generating a result
> incorrect.
>
> I want to know if it is possible to change this or if I am doing some
> wrong.
>
> Since I thank you for the help.
>
>
>
>
>
> *[1]: Query*
>
> *SELECT ?s ?o*
>
> *WHERE {*
>
> *?s <http://dbpedia.org/property/first
> <http://dbpedia.org/property/first>> ?o*
>
> *filter regex(?o, "David", "i")*
>
> *}*
>
>
>
> *[2]: Query*
>
> *PREFIX text: <http://jena.apache.org/text# <http://jena.apache.org/text>>*
>
> *SELECT ?s ?o*
>
> *WHERE {*
>
> *?s text:query( <http://dbpedia.org/property/first
> <http://dbpedia.org/property/first>> "David") ;*
>
> *<http://dbpedia.org/property/first <http://dbpedia.org/property/first>>
> ?o*
>
> *}*
>
>

Re: Question about indexing in text search

[Rob Vesse]

There is nothing obviously wrong with your configuration.  You still haven’t 
shown the code that you are using with this configuration to make your query.

 

My guess would be that perhaps your code is loading in the base dataset without 
the indexing support i.e. you may be querying the base dataset rather than the 
text dataset, but without having seen your code that’s only a guess.

 

Rob

 

From: Alysson Gomes 
Reply-To: 
Date: Wednesday, 18 July 2018 at 14:55
To: 
Subject: Re: Question about indexing in text search

 

Hi Rob!

I attached the file with the code of the text index (file index.ttl) but to 
facility it, follow the image:

 

I'm using the same queries of the previous mail. Case has something wrong, 
please indicate it some solution.

 

Em qua, 18 de jul de 2018 às 10:12, Rob Vesse  escreveu:

This is a misunderstanding, not a bug.  Property functions use the SPARQL 
collection syntax i.e. ( <http://dbpedia.org/property/first> “David”) to pass 
arguments to the function which is given as the predicate, in this case 
text:query. The rdf:first/rdf:rest you see in the logs is simply the expansion 
of that into triple patterns which later gets extracted out into the actual 
property function call.  The fact that those happen to be similar to the 
property you’re are trying to search on is purely coincidental.

 

If your query is not working as expected then the actual problem is elsewhere, 
likely in the configuration of your text index.  So you would need to share 
that configuration and show how you actually execute your query if you want 
further help with this.

 

Regards,


Rob

 

From: Alysson Gomes 
Reply-To: 
Date: Wednesday, 18 July 2018 at 13:42
To: "users@jena.apache.org" 
Subject: Question about indexing in text search

 

Hello, my name is Alysson, I am a master's student in the Pontifical Catholic 
University of Rio de Janeiro and am having problems with the indexing in text 
search.

In the attach 1 contains the assembler that I'm using for to index the triples 
that contain the predicate <http://dbpedia.org/property/first>.

My goal is to reproduce the query [1] using an index, but the problem is that 
when I execute the query [2] the URI used by the query processor is different 
of the URI that I am using in the predicate, as show image below:


Error! Filename not specified.

As show in the image above, the query processor uses the URI 
<http://www.w3.org/1999/02/22-rdf-syntax-ns> generating a result incorrect. 

I want to know if it is possible to change this or if I am doing some wrong.

Since I thank you for the help.

 

 

[1]: Query

SELECT ?s ?o

WHERE {

?s <http://dbpedia.org/property/first> ?o

filter regex(?o, "David", "i")

}

 

[2]: Query

PREFIX text: <http://jena.apache.org/text#>

SELECT ?s ?o

WHERE {

?s text:query( <http://dbpedia.org/property/first> "David") ;

<http://dbpedia.org/property/first> ?o

}

Re: Question about indexing in text search

[Alysson Gomes]

Hi Rob!
I attached the file with the code of the text index (file *index.ttl*) but
to facility it, follow the image:

[image: Screenshot from 2018-07-18 10-34-38.png]
I'm using the same queries of the previous mail. Case has something wrong,
please indicate it some solution.

Em qua, 18 de jul de 2018 às 10:12, Rob Vesse 
escreveu:

> This is a misunderstanding, not a bug.  Property functions use the SPARQL
> collection syntax i.e. (  “David”) to
> pass arguments to the function which is given as the predicate, in this
> case text:query. The rdf:first/rdf:rest you see in the logs is simply the
> expansion of that into triple patterns which later gets extracted out into
> the actual property function call.  The fact that those happen to be
> similar to the property you’re are trying to search on is purely
> coincidental.
>
>
>
> If your query is not working as expected then the actual problem is
> elsewhere, likely in the configuration of your text index.  So you would
> need to share that configuration and show how you actually execute your
> query if you want further help with this.
>
>
>
> Regards,
>
>
> Rob
>
>
>
> *From: *Alysson Gomes 
> *Reply-To: *
> *Date: *Wednesday, 18 July 2018 at 13:42
> *To: *"users@jena.apache.org" 
> *Subject: *Question about indexing in text search
>
>
>
> Hello, my name is Alysson, I am a master's student in the Pontifical
> Catholic University of Rio de Janeiro and am having problems with the
> indexing in text search.
>
> In the* attach 1* contains the assembler that I'm using for to index the
> triples that contain the predicate * >.*
>
> My goal is to reproduce the query *[1]* using an index, but the problem
> is that when I execute the query *[2]* the URI used by the query
> processor is different of the URI that I am using in the predicate, as
> show image below:
>
>
> [image: image1.png]
>
> As show in the image above, the query processor uses the URI *<*
> http://www.w3.org/1999/02/22-rdf-syntax-ns> generating a result
> incorrect.
>
> I want to know if it is possible to change this or if I am doing some
> wrong.
>
> Since I thank you for the help.
>
>
>
>
>
> *[1]: Query*
>
> *SELECT ?s ?o*
>
> *WHERE {*
>
> *?s  > ?o*
>
> *filter regex(?o, "David", "i")*
>
> *}*
>
>
>
> *[2]: Query*
>
> *PREFIX text: >*
>
> *SELECT ?s ?o*
>
> *WHERE {*
>
> *?s text:query(  > "David") ;*
>
> *>
> ?o*
>
> *}*
>
#java -cp /home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar tdb.tdbloader --tdb=index.ttl tdb_citation_data_en.ttl 
#java -cp /home/alysson/MEGA/Computação/ApacheJena/apache-jena-fuseki-3.8.0/fuseki-server.jar jena.textindexer --desc=index.ttl 


@prefix :		 .
@prefix tdb:	 .
@prefix rdfs:	 .
@prefix rdf:	 .
@prefix ja:		 .
@prefix text:	 .


[] ja:loadClass "org.apache.jena.tdb.TDB" .
tdb:DatasetTDB  rdfs:subClassOf  ja:RDFDataset .
tdb:GraphTDBrdfs:subClassOf  ja:Model .

## Initialize text query
[] ja:loadClass   "org.apache.jena.query.text.TextQuery" .
text:TextDataset  rdfs:subClassOf   ja:RDFDataset .
text:TextIndexLucene  rdfs:subClassOf   text:TextIndex .


:text_dataset rdf:type text:TextDataset ;
	text:dataset   <#dataset> ;
text:index <#indexLucene> ;
.

<#dataset> rdf:type tdb:DatasetTDB ;
tdb:location "/home/alysson/Documents/PUC-Rio/TestJena/tdb-citation-data-en-fuseki-index" ;
.

# Text index description
<#indexLucene> a text:TextIndexLucene ;
text:directory  ;
text:entityMap <#entMap> ;
.

<#entMap> a text:EntityMap ;
text:defaultField "first" ;
text:entityField  "uri" ;
text:map (
[ 
	text:field "first" ; 
   	text:predicate 
		]
)
.

Re: Question about indexing in text search

[Rob Vesse]

This is a misunderstanding, not a bug.  Property functions use the SPARQL 
collection syntax i.e. (  “David”) to pass 
arguments to the function which is given as the predicate, in this case 
text:query. The rdf:first/rdf:rest you see in the logs is simply the expansion 
of that into triple patterns which later gets extracted out into the actual 
property function call.  The fact that those happen to be similar to the 
property you’re are trying to search on is purely coincidental.

 

If your query is not working as expected then the actual problem is elsewhere, 
likely in the configuration of your text index.  So you would need to share 
that configuration and show how you actually execute your query if you want 
further help with this.

 

Regards,


Rob

 

From: Alysson Gomes 
Reply-To: 
Date: Wednesday, 18 July 2018 at 13:42
To: "users@jena.apache.org" 
Subject: Question about indexing in text search

 

Hello, my name is Alysson, I am a master's student in the Pontifical Catholic 
University of Rio de Janeiro and am having problems with the indexing in text 
search.

In the attach 1 contains the assembler that I'm using for to index the triples 
that contain the predicate .

My goal is to reproduce the query [1] using an index, but the problem is that 
when I execute the query [2] the URI used by the query processor is different 
of the URI that I am using in the predicate, as show image below:


As show in the image above, the query processor uses the URI 
 generating a result incorrect. 

I want to know if it is possible to change this or if I am doing some wrong.

Since I thank you for the help.

 

 

[1]: Query

SELECT ?s ?o

WHERE {

?s  ?o

filter regex(?o, "David", "i")

}

 

[2]: Query

PREFIX text: 

SELECT ?s ?o

WHERE {

?s text:query(  "David") ;

 ?o

}