rdfapi-php-interest — general forum for RAP feature requests, bug reports, patches, and use cases

[Rdfapi-php-interest] loading and navigation of owl file

[<es...@gm...>]

Hello.

I am a new user from RDFAPI-PHP and I can 't assume a owl to read.

I want to mount all of classes, properties and instances defined in owl fil=
e
to memory.

Exactly, I can load the file but don 't know how I can get the classes,
properties and instances.



OntModel only supports the API, listClasses() to get classes.  Am I right??

 listClasses() returns Resource data type. How can I change Resource to
OntClass..



This is the part of code to get classes in owl file.

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

//create new memory model

$ontModel =3D ModelFactory::getOntModel(MEMMODEL,RDFS_VOCABULARY);



//load the parse document

$ontModel->load(ROOT_DIRECTORY."software.owl");



// load classes

$array =3D $ontModel->listClasses("http://ozzy.cbnu.ac.kr/ontology/ ");



foreach( $array as $resource ){



echo $resouce->getLabel();



// How can I get the classes, properties and instances ??



}



=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

I'll very happy if you give me a answer
Thank you.

Yang.

Re: [Rdfapi-php-interest] SPARQL FROM clause question

[Onno P. <onn...@gm...>]

Dear Richard,

The question is if RAP SPARQL can do it. I suppose the answer is no.
I think we should not talk about *any* RDF+SPARQL tool. PHP is highly
popular and every webhost offers it (albeit not PHP5). I think we should do
an effort to make RAP the best. I believe ontology browsers are the future;
they must be able to 'surf' triple stores.

Onno Paap


On 4/3/06, Richard Cyganiak <ri...@cy...> wrote:
>
> Hi Onno,
>
> On 3 Apr 2006, at 13:59, Onno Paap wrote:
> > I would like to combine different ontology's resident in triple
> > stores on different servers. Eventually, thousands of them.
> > I am not certain but I suppose the SPARQL syntax provides for that.
> Well ... SPARQL has syntax for querying multiple *graphs*. A graph
> can be anything with a URI.
>
> The question is, what kind of URIs can you use in the FROM clause?
> That depends totally on the triple store/toolkit you're using.
>
> In most SPARQL stores, you can put URIs of RDF files in the FROM
> clause. This means you can query multiple RDF *files* that reside on
> different servers.
>
> What you want to do is query multiple *endpoints*. I don't know of
> *any* tool that can do this yet, but it would certainly be very
> useful and cool. So if you build it, be sure to tell us about it!
>
> Richard
>
>

Re: [Rdfapi-php-interest] SPARQL FROM clause question

[Richard C. <ri...@cy...>]

Hi Onno,

On 3 Apr 2006, at 13:59, Onno Paap wrote:
> I would like to combine different ontology's resident in triple  
> stores on different servers. Eventually, thousands of them.
> I am not certain but I suppose the SPARQL syntax provides for that.
Well ... SPARQL has syntax for querying multiple *graphs*. A graph  
can be anything with a URI.

The question is, what kind of URIs can you use in the FROM clause?  
That depends totally on the triple store/toolkit you're using.

In most SPARQL stores, you can put URIs of RDF files in the FROM  
clause. This means you can query multiple RDF *files* that reside on  
different servers.

What you want to do is query multiple *endpoints*. I don't know of  
*any* tool that can do this yet, but it would certainly be very  
useful and cool. So if you build it, be sure to tell us about it!

Richard

> If not, I can work around it in plain old PHP programming, issuing  
> separate SPARQL queries for separate servers, but I would like to  
> know if that is the course of action or not.
>
> For example, I have two different SPARQL endpoints (they really  
> exist):
> http://www.15926.org/2006/02/oim and
> http://www.15926.org/2006/02/rdl
> with named graphs in them of the same names.
> They are not, but suppose they are on different servers.
> Now I want to combine them like this:
>
> prefix dm: <http://www.15926.org/2006/02/dm#>
> select ?id ?superclass
> from < http://www.15926.org/2006/02/oim>
> from <http://www.15926.org/2006/02/rdl>
> where {
> ?id rdfs:subClassOf ?x .
> ?x owl:hasValue ?superclass .
> ?superclass rdf:type dm:ClassOfInanimatePhysicalObject .
> }
>
> Note: in RAP the namespaces rdfs, owl, and rdf don't need to be  
> declared with prefix.
>
> The top two triples in the where clause work for the .../rdl graph  
> and the bottom for the .../oim graph.
> This combined query doesn't work in RAP SPARQL (I'm using netapi).
> My question is: should it work? Or would it work with different  
> syntax? Or totally not?
> Onno Paap

[Rdfapi-php-interest] SPARQL FROM clause question

[Onno P. <onn...@gm...>]

I would like to combine different ontology's resident in triple stores on
different servers. Eventually, thousands of them.
I am not certain but I suppose the SPARQL syntax provides for that. If not,
I can work around it in plain old PHP programming, issuing separate SPARQL
queries for separate servers, but I would like to know if that is the cours=
e
of action or not.
For example, I have two different SPARQL endpoints (they really exist):
http://www.15926.org/2006/02/oim and
http://www.15926.org/2006/02/rdl
with named graphs in them of the same names.

They are not, but suppose they are on different servers.
Now I want to combine them like this:

prefix dm: <http://www.15926.org/2006/02/dm#>
select ?id ?superclass
from <http://www.15926.org/2006/02/oim>
from <http://www.15926.org/2006/02/rdl>
where {
?id rdfs:subClassOf ?x .
?x owl:hasValue ?superclass .
?superclass rdf:type dm:ClassOfInanimatePhysicalObject .
}
Note: in RAP the namespaces rdfs, owl, and rdf don't need to be declared
with prefix.

The top two triples in the where clause work for the .../rdl graph and the
bottom for the .../oim graph.
This combined query doesn't work in RAP SPARQL (I'm using netapi).
My question is: should it work? Or would it work with different syntax? Or
totally not?

Onno Paap

Re: [Rdfapi-php-interest] RAP, SPARQL and PHP 4

[<h95...@wu...>]

Thanks for your answers.

I haven't checked it yet, but I think RDQL will be enough. I just started out
with SPARQL because it was recommended over RDQL somewhere.

Bye,
Thomas

Re: [Rdfapi-php-interest] xml: namespace declaration in SPARQL output gives error

[Richard C. <ri...@cy...>]

On 2 Apr 2006, at 20:39, Onno Paap wrote:

> Dear Richard,
>
> This solution works perfectly.

Great!

> I hope you will put it in the CVS.

Sure, as soon as SourceForge has repaired the developer CVS server.

Richard


>
> Thank you!
> Onno Paap
>
>
> On 4/2/06, Richard Cyganiak <ri...@cy...> wrote: Onno,
>
> You're right, the xml namespace declaration doesn't have to be there,
> and removing it is probably the right thing. I *think* that you
> simply have to remove line 335 of /api/constants.php, which is the
> middle line of these:
>
> $default_prefixes = array(
>    XML_NAMESPACE_PREFIX => XML_NAMESPACE_URI,
>    RDF_NAMESPACE_PREFIX => RDF_NAMESPACE_URI,
>
> This should remove the declaration from the CONSTRUCT output. I
> haven't tested if it causes any breakage elsewhere. Can you please
> let us know if it works for you?
>
> Thanks,
> Richard
>
>
> On 2 Apr 2006, at 17:46, Onno Paap wrote:
> >  When using SPARQL netapi, when outputting an entire model or
> > outputting a CONSTRUCT query the output starts with:
> > <rdf:RDF
> >    xml:base=" http://www.15926.org/2006/02/dm#
> >    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> >    xmlns:xsd=" http://www.w3.org/2001/XMLSchema #"
> >    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
> >    xmlns:owl=" http://www.w3.org/2002/07/owl #"
> >    xmlns:xml="http://www.w3.org/XML/1998/namespace"
> >    xmlns:dc= http://purl.org/dc/elements/1.1/
> > ... etc
> >
> > This works fine in Firefox, but in Internet Explorer an error
> > message comes up:
> >
> >  
> ----------------------------------------------------------------------
> > ----------
> > The XML page cannot be displayed
> > Cannot view XML input using XSL style sheet. Please correct the
> > error and then click the Refresh button, or try again later.
> > The namespace prefix is not allowed to start with the reserved
> > string "xml". Error processing resource ' http://localhost/be...
> >    xmlns:xml="http://www.w3.org/XML/1998/namespace "
> > ---^
> >  
> ----------------------------------------------------------------------
> > -----------
> > The xml: namespace is not required to be declared (I think). It is
> > not part of the model's namespaces stored in the RAP namespaces
> > table, neither does it come up anywhere in the SPARQL sources. I am
> > not able to solve it quickly.
> >
> > Onno Paap
> >
> >
>
>
>
>
> -- 
> Onno Paap
> Fluor corporation
> +31 23 5432116 (work)
> +31 6 21625149 (mobile)

Re: [Rdfapi-php-interest] xml: namespace declaration in SPARQL output gives error

[Onno P. <onn...@gm...>]

Dear Richard,

This solution works perfectly.
I hope you will put it in the CVS.

Thank you!
Onno Paap


On 4/2/06, Richard Cyganiak <ri...@cy...> wrote:
>
> Onno,
>
> You're right, the xml namespace declaration doesn't have to be there,
> and removing it is probably the right thing. I *think* that you
> simply have to remove line 335 of /api/constants.php, which is the
> middle line of these:
>
> $default_prefixes =3D array(
>    XML_NAMESPACE_PREFIX =3D> XML_NAMESPACE_URI,
>    RDF_NAMESPACE_PREFIX =3D> RDF_NAMESPACE_URI,
>
> This should remove the declaration from the CONSTRUCT output. I
> haven't tested if it causes any breakage elsewhere. Can you please
> let us know if it works for you?
>
> Thanks,
> Richard
>
>
> On 2 Apr 2006, at 17:46, Onno Paap wrote:
> >  When using SPARQL netapi, when outputting an entire model or
> > outputting a CONSTRUCT query the output starts with:
> > <rdf:RDF
> >    xml:base=3D"http://www.15926.org/2006/02/dm#
> >    xmlns:rdf=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> >    xmlns:xsd=3D"http://www.w3.org/2001/XMLSchema #"
> >    xmlns:rdfs=3D"http://www.w3.org/2000/01/rdf-schema#"
> >    xmlns:owl=3D"http://www.w3.org/2002/07/owl #"
> >    xmlns:xml=3D"http://www.w3.org/XML/1998/namespace"
> >    xmlns:dc=3Dhttp://purl.org/dc/elements/1.1/
> > ... etc
> >
> > This works fine in Firefox, but in Internet Explorer an error
> > message comes up:
> >
> > ----------------------------------------------------------------------
> > ----------
> > The XML page cannot be displayed
> > Cannot view XML input using XSL style sheet. Please correct the
> > error and then click the Refresh button, or try again later.
> > The namespace prefix is not allowed to start with the reserved
> > string "xml". Error processing resource ' http://localhost/be...
> >    xmlns:xml=3D"http://www.w3.org/XML/1998/namespace"
> > ---^
> > ----------------------------------------------------------------------
> > -----------
> > The xml: namespace is not required to be declared (I think). It is
> > not part of the model's namespaces stored in the RAP namespaces
> > table, neither does it come up anywhere in the SPARQL sources. I am
> > not able to solve it quickly.
> >
> > Onno Paap
> >
> >
>
>


--
Onno Paap
Fluor corporation
+31 23 5432116 (work)
+31 6 21625149 (mobile)

Re: [Rdfapi-php-interest] xml: namespace declaration in SPARQL output gives error

[Richard C. <ri...@cy...>]

Onno,

You're right, the xml namespace declaration doesn't have to be there,  
and removing it is probably the right thing. I *think* that you  
simply have to remove line 335 of /api/constants.php, which is the  
middle line of these:

$default_prefixes = array(
    XML_NAMESPACE_PREFIX => XML_NAMESPACE_URI,
    RDF_NAMESPACE_PREFIX => RDF_NAMESPACE_URI,

This should remove the declaration from the CONSTRUCT output. I  
haven't tested if it causes any breakage elsewhere. Can you please  
let us know if it works for you?

Thanks,
Richard


On 2 Apr 2006, at 17:46, Onno Paap wrote:
>  When using SPARQL netapi, when outputting an entire model or  
> outputting a CONSTRUCT query the output starts with:
> <rdf:RDF
>    xml:base="http://www.15926.org/2006/02/dm#
>    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>    xmlns:xsd="http://www.w3.org/2001/XMLSchema #"
>    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
>    xmlns:owl="http://www.w3.org/2002/07/owl #"
>    xmlns:xml="http://www.w3.org/XML/1998/namespace"
>    xmlns:dc=http://purl.org/dc/elements/1.1/
> ... etc
>
> This works fine in Firefox, but in Internet Explorer an error  
> message comes up:
>
> ---------------------------------------------------------------------- 
> ----------
> The XML page cannot be displayed
> Cannot view XML input using XSL style sheet. Please correct the  
> error and then click the Refresh button, or try again later.
> The namespace prefix is not allowed to start with the reserved  
> string "xml". Error processing resource ' http://localhost/be...
>    xmlns:xml="http://www.w3.org/XML/1998/namespace"
> ---^
> ---------------------------------------------------------------------- 
> -----------
> The xml: namespace is not required to be declared (I think). It is  
> not part of the model's namespaces stored in the RAP namespaces  
> table, neither does it come up anywhere in the SPARQL sources. I am  
> not able to solve it quickly.
>
> Onno Paap
>
>

[Rdfapi-php-interest] xml: namespace declaration in SPARQL output gives error

[Onno P. <onn...@gm...>]

 When using SPARQL netapi, when outputting an entire model or outputting a
CONSTRUCT query the output starts with:
<rdf:RDF
   xml:base=3D"http://www.15926.org/2006/02/dm#
   xmlns:rdf=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:xsd=3D"http://www.w3.org/2001/XMLSchema#"
   xmlns:rdfs=3D"http://www.w3.org/2000/01/rdf-schema#"
   xmlns:owl=3D"http://www.w3.org/2002/07/owl#"
   xmlns:xml=3D"http://www.w3.org/XML/1998/namespace"
   xmlns:dc=3Dhttp://purl.org/dc/elements/1.1/
... etc

This works fine in Firefox, but in Internet Explorer an error message comes
up:
---------------------------------------------------------------------------=
-----
The XML page cannot be displayed
Cannot view XML input using XSL style sheet. Please correct the error and
then click the Refresh button, or try again later.
The namespace prefix is not allowed to start with the reserved string "xml"=
.
Error processing resource 'http://localhost/be...
   xmlns:xml=3D"http://www.w3.org/XML/1998/namespace"
---^
---------------------------------------------------------------------------=
------
The xml: namespace is not required to be declared (I think). It is not part
of the model's namespaces stored in the RAP namespaces table, neither does
it come up anywhere in the SPARQL sources. I am not able to solve it
quickly.

Onno Paap

Re: [Rdfapi-php-interest] Little glitch in file SparqlParserException.php

[Richard C. <ri...@cy...>]

Thanks Onno, good catch. I fixed this and a couple of other places  
where <? was used in rdfdb-utils and the tests. The SourceForge  
developer CVS has been down since Friday so I can't commit the  
changes yet, but will do as soon as the SourceForge folks get their  
act together.

Richard


On 1 Apr 2006, at 16:59, Onno Paap wrote:

> The file SparqlParserException.php starts with <? instead of <?php
> This caused the source of this file to be displayed before each  
> SPARQL result, on my (Windows+Apache) system.
> Onno Paap

Re: [Rdfapi-php-interest] RAP, SPARQL and PHP 4

[Gunnar A. G. <ggr...@cs...>]

> I tried changing private variables to "var", public functions to  
> just "function"
> etc., but I still get a error in SparqlEngine.php from this line:
>     $element = $it->current()->getStatement()

In PHP4 this had to be done in two steps:

$element1 = $it->current();
$element=$element1->getStatement()


This might not solve any of your problems though :) I dont know  
anything about the sparql engine.


--
Gunnar Aastrand Grimnes
ggr...@cs...

http://www.dfki.uni-kl.de/~grimnes

[Rdfapi-php-interest] Little glitch in file SparqlParserException.php

[Onno P. <onn...@gm...>]

The file SparqlParserException.php starts with <? instead of <?php
This caused the source of this file to be displayed before each SPARQL
result, on my (Windows+Apache) system.
Onno Paap

AW: [Rdfapi-php-interest] RAP, SPARQL and PHP 4

[Chris B. <bi...@ze...>]

Hi Thomas,

> 
> I tried to run RAP 0.9.3 on servers with PHP 4.3.10 and 4.4.2, but the
> sparql
> classes use features exclusive to PHP 5 (I guess - I'm new to OOP).
> 
> Is it possible to use SPARQL with that RAP and PHP versions? [1]

Sorry, the SPARQL package only works with PHP5.

> Or is there an older version of RAP that will work? (I didn't find it
> mentioned
> in the release notes on sourceforge or in the documentation)?

Do you really need SPARQL functionality or would RDQL be enough?

If yes, you could use RAP's RDQL engine which works with PHP4.

Cheers

Chris


> Any hints would be great!
> 
> Bye,
> Thomas
> 
> [1]
> I tried changing private variables to "var", public functions to just
> "function"
> etc., but I still get a error in SparqlEngine.php from this line:
>     $element = $it->current()->getStatement();
> 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting
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> that extends applications into web and mobile media. Attend the live
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> and join the prime developer group breaking into this new coding
> territory!
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> _______________________________________________
> Rdfapi-php-interest mailing list
> Rdf...@li...
> https://lists.sourceforge.net/lists/listinfo/rdfapi-php-interest

[Rdfapi-php-interest] RAP, SPARQL and PHP 4

[<h95...@wu...>]

Hello!

I tried to run RAP 0.9.3 on servers with PHP 4.3.10 and 4.4.2, but the sparql
classes use features exclusive to PHP 5 (I guess - I'm new to OOP).

Is it possible to use SPARQL with that RAP and PHP versions? [1]

Or is there an older version of RAP that will work? (I didn't find it mentioned
in the release notes on sourceforge or in the documentation)?

Any hints would be great!

Bye,
Thomas

[1]
I tried changing private variables to "var", public functions to just "function"
etc., but I still get a error in SparqlEngine.php from this line:
    $element = $it->current()->getStatement();

[Rdfapi-php-interest] RAP, SPARQL and PHP >4.2

[<h95...@wu...>]

Hello!

I tried to run RAP 0.9.3 on servers with PHP 4.3.10 and 4.4.2, but the sparql
classes use features exclusive to PHP 5 (I guess - I'm new to OOP).

Is it possible to use SPARQL with that RAP and PHP versions? [1]

Or is there an older version of RAP that will work? (I didn't find it mentioned
in the release notes on sourceforge or in the documentation)?

Any hints would be really great!

Bye,
Thomas

[1]
I tried changing private variables to "var", public functions to just "function"
etc., but I still get a error in SparqlEngine.php from this line:
    $element = $it->current()->getStatement();

[Rdfapi-php-interest] Problems with Querying

[sampath v. <sam...@gm...>]

Hi,

I am using RAP(Statement-Centric MemModel API) for my conference
publications management project. For each publication we automatically
generate RDF file. All the files are kept on the server. I am building the
interface for reporting and querying.

I am using the find method. Here is my rdf file and the code for querying.

Problems:
1) I do not want the results in html table format. I want it as a list wher=
e
I get the file name.
2) I have to search a number of RDF files. Can you suggest me a way.

Sample publication rdf file:
<?xml version=3D"1.0" encoding=3D"UTF-8" ?>
<?xml-stylesheet type=3D"text/xsl" href=3D"../publication.xsl"?>
<rdf:RDF
   xml:base=3D"../index.rdf#"
   xmlns:rdf=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:rdfs=3D"http://www.w3.org/2000/01/rdf-schema#"
   xmlns:ns1=3D"http://purl.org/dc/elements/1.1/"
   xmlns:ns2=3D"http://purl.org/dc/terms/">

<rdf:Description rdf:about=3D"./p1.pdf">
    <ns1:title>Foreground Object Detection from Videos Containing Complex
Background </ns1:title>
      <ns1:type>subunit</ns1:type>
    <ns2:DCMIType>publication</ns2:DCMIType>
    <ns2:abstract>This paper proposes a novel method for detection and
segmentation of foreground objects from a video
    which contains both stationary and moving background objects and
undergoes both gradual and sudden changes. A Bayes     decision rule for
classification of background and foreground from selected feature vectors i=
s
formulated. Under this rule,
    different types of background objects will be classified from foregroun=
d
objects by choosing a proper feature vector.
    The stationary background object is described by the color feature, and
the moving background object is represented by
    the color co-occurrence feature. Foreground objects are extracted by
fusing the classification results from both
    stationary     and moving pixels. Learning strategies for the gradual
and sudden background changes are proposed to
    adapt to various changes in background through the video. The
convergence of the learning process is proved and a
    formula to select a proper learning rate is also derived. Experiments
have shown promising results in extracting
    foreground objects from many complex backgrounds including wavering tre=
e
branches, flickering screens and water
    surfaces, moving escalators, opening and closing doors, switching light=
s
and shadows of moving objects.</ns2:abstract>
    <ns1:subject>Video processing, background modeling, foreground
segmentation, video surveillance, Bayes model,
    color co-occurrence. </ns1:subject>
    <ns2:references>I. Haritaoglu, D. Harwood, and L. Davis. W4: Real-time
surveillance of people and their activities.
    </ns2:references>
    <ns1:contributor>L. Li, W. Huang, I. Y. H. Gu, Q. Tian</ns1:contributor=
>
    <ns1:format>pdf</ns1:format>
    <ns2:isPartOf>
http://www.ndsu.edu/ndsu/velupula/cms/conference1/index.rdf</ns2:isPartOf>
    <ns2:isFormatOf>Content Analysis</ns2:isFormatOf>
</rdf:Description>
</rdf:RDF>


Sample Code to Query:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
<title>Conference Management System</title>
</head>
<body>
<h1 align=3D"center">Conference Management System </h1>
<p>&nbsp;</p>
<p><strong>SEARCH RESULTS:</strong></p>
<?php
define("RDFAPI_INCLUDE_DIR", "rdfapi-php/api/");
include_once(RDFAPI_INCLUDE_DIR."RdfAPI.php");

// Filename of an RDF document
$base=3D"./conference1/p1.rdf";
// Create a new MemModel
$model =3D ModelFactory::getDefaultModel();
// Load and parse document
$model->load($base);

$homepage =3D new Literal("Content Analysis");
$res =3D $model->find(NULL, NULL, $homepage);
$res->writeAsHtmlTable();
 echo $res->toStringIncludingTriples();
echo "<P>";
?>

</body>
</html>


Please do reply me. Thanks in advance.

--
Sampath Velupula

[Rdfapi-php-interest] Invitation

[sampath v. <sam...@gm...>]

Hi! I just signed up for a great promotion that I think you should
check out. We can both get a free new IPOD nano!

http://www.entakety.com/?r=3DMVGEAigikxY2A2oHAy4O&i=3Dgmail&z=3D1&tc=3D18

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Re: [Rdfapi-php-interest] Questions about OntModel

[Alexandre P. <al...@pa...>]

Hi,

FYI, I managed to do what I wanted using InfModel, and not OntModel.

The 3 steps are:
- Adding the vocabulary in RAP vocabularies
- Defining the model as an instance of InfModelF
- Adding subproperties statements as:
$this->add(new Statement(RELATIONSHIP::ACQUAINTANCE_OF(),
RDFS::SUB_PROPERTY_OF(), FOAF::KNOWS());

So that any findFirstMatchingStatement($subject, FOAF::KNOWS, $null)
query returns all statements with rel:xxx as a predicate.

As I have to add the Relationship vocabulary in RAP, I created a small
script to quickly do it, instead of writing or copy/pasting
properties/class definition.
The script can be used for any vocabulary, and can be downloaded here:
http://apassant.net/share/semweb/vocab2rap-0.1.tgz. Feel free to add
it in RAP if you think it's usefull.

Alex.

2006/2/23, Josef Petr=E1k <jsp...@gm...>:
> Hi,
>
> I am not sure how exactly the OntModel works but be aware! FOAF and
> relationship module are not ontologies but "plain" RDF Schemas. While
> I was playing with Java tool Jastor for generating model from
> ontologies I was faced with this problem and got into trouble.
>
> Josef Petr=E1k
>
> On 2/23/06, Alexandre Passant <al...@pa...> wrote:
> > Hi,
> >
> > I used RAP to write a FOAF parser [1], in which I use MemModel to read
> > my RDF files.
> >
> > I recently thaught about FOAF extensions, as the Relationship
> > vocabulary [2], which defines some subproperties of foaf:knows.
> >
> > At the moment, with my MemModel, I use
> > findFirstMatchingStatement($subject, FOAF::KNOWS, $null) to get all
> > foaf:knows classes related to my subject.
> >
> > But, I assume, it won't work if the RDF files that use rel:worksWith
> > instead of foaf:knows.
> >
> > Is that the role of OntModel to make this kind of queries work ? If
> > so, should I have to write somewhere (in vocabulary folder) the
> > Relationship model and its mapping with FOAF ?
> >
> > Thanx for any advice on this point.
> >
> > [1] http://gna.org/projects/phoaf
> > [2] http://vocab.org/relationship/
> >
> >
> > -------------------------------------------------------
> > This SF.Net email is sponsored by xPML, a groundbreaking scripting lang=
uage
> > that extends applications into web and mobile media. Attend the live we=
bcast
> > and join the prime developer group breaking into this new coding territ=
ory!
> > http://sel.as-us.falkag.net/sel?cmdlnk&kid=110944&bid$1720&dat=121642
> > _______________________________________________
> > Rdfapi-php-interest mailing list
> > Rdf...@li...
> > https://lists.sourceforge.net/lists/listinfo/rdfapi-php-interest
> >
>
>
> --
>  *** jspetrak (HW) ***
>
> Weblog: http://zapisky.info/
> Homepage: http://zapisky.info/home/
>
> ICQ: 179271149
> Jabber: Imp...@nj...
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting langua=
ge
> that extends applications into web and mobile media. Attend the live webc=
ast
> and join the prime developer group breaking into this new coding territor=
y!
> http://sel.as-us.falkag.net/sel?cmdlnk&kid=110944&bid$1720&dat=121642
> _______________________________________________
> Rdfapi-php-interest mailing list
> Rdf...@li...
> https://lists.sourceforge.net/lists/listinfo/rdfapi-php-interest
>

Re: [Rdfapi-php-interest] Re: dataset->sparqlQuery() Bug?

[<tob...@we...>]

Hi Markus,
thank you for your bug report. The problem is in method 
findInNamedGraphs($graphnode,$subject,$predicate,$object) of DatasetMem 
and DatasetDb. The method of DatasetMem returns an iterator over all 
matched triples OR quads depending on the value of $graphnode. The 
method of DatasetDb returns always an iterator over all matched quads.
I fixed it and put it in our CVS.

Regards,
Tobias

> Hi again,
>
> i fixed the problem in ../rap/api/sparql/SparqlEngine.php in method 
> _buildResultSet(). The problem was, that the value of $triple in the 
> foreach loop is a Statement object if queried against the default 
> graph and otherwise the value is a Quad object if queried against a 
> named graph. I hope this fits to your needs and is a real bugfix 
> without following a new bug!
>
> regards, markus
>
>
> /**
>  * Builds the resultset.
>  *
>  * @param  GraphPattern $pattern
>  * @param  Array        $resmodel
>  * @return Array
>  */
> protected function _buildResultSet($pattern,$resmodel){
>     // determine variables and their corresponding values
>     $result = null;
>     if(is_string($pattern->getSubject())){
>     $n = 0;
>     foreach($resmodel['trip'] as $key => $triple){
>         if(isset($resmodel['graphvar'][$key]))
>         $result[$n][$resmodel['graphvar'][$key]] = 
> $resmodel['graph'][$key];
>     
>         // FIXED
>         if(isset($triple->subj)) {
>         $result[$n++][$pattern->getSubject()] = $triple->subj;
>         } else {
>         $result[$n++][$pattern->getSubject()] = $triple->statement->subj;
>         }
>     }
>     }
>     if(is_string($pattern->getPredicate())){
>     $n = 0;
>     foreach($resmodel['trip'] as $key => $triple){
>         if(isset($resmodel['graphvar'][$key]))
>         $result[$n][$resmodel['graphvar'][$key]] = 
> $resmodel['graph'][$key];
>     
>         // FIXED
>         if(isset($triple->pred)) {
>         $result[$n++][$pattern->getPredicate()] = $triple->pred;
>         } else {
>         $result[$n++][$pattern->getPredicate()] = 
> $triple->statement->pred;
>         }
>     }
>     }
>     if(is_string($pattern->getObject())){
>     $n = 0;
>     foreach($resmodel['trip'] as $key => $triple){
>         if(isset($resmodel['graphvar'][$key]))
>         $result[$n][$resmodel['graphvar'][$key]] = 
> $resmodel['graph'][$key];
>     
>         // FIXED
>         if(isset($triple->obj)) {
>         $result[$n++][$pattern->getObject()] = $triple->obj;
>         } else {
>         $result[$n++][$pattern->getObject()] = $triple->statement->obj;
>         }
>     }
>     }
>
>     return $result;
> }
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting 
> language
> that extends applications into web and mobile media. Attend the live 
> webcast
> and join the prime developer group breaking into this new coding 
> territory!
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
> _______________________________________________
> Rdfapi-php-interest mailing list
> Rdf...@li...
> https://lists.sourceforge.net/lists/listinfo/rdfapi-php-interest

[Rdfapi-php-interest] Re: dataset->sparqlQuery() Bug?

[Markus S. <m.s...@hi...>]

Hi again,

i fixed the problem in ../rap/api/sparql/SparqlEngine.php in method 
_buildResultSet(). The problem was, that the value of $triple in the 
foreach loop is a Statement object if queried against the default graph 
and otherwise the value is a Quad object if queried against a named 
graph. I hope this fits to your needs and is a real bugfix without 
following a new bug!

regards, markus


/**
  * Builds the resultset.
  *
  * @param  GraphPattern $pattern
  * @param  Array        $resmodel
  * @return Array
  */
protected function _buildResultSet($pattern,$resmodel){
     // determine variables and their corresponding values
     $result = null;
     if(is_string($pattern->getSubject())){
	$n = 0;
	foreach($resmodel['trip'] as $key => $triple){
	    if(isset($resmodel['graphvar'][$key]))
		$result[$n][$resmodel['graphvar'][$key]] = $resmodel['graph'][$key];
	
	    // FIXED
	    if(isset($triple->subj)) {
		$result[$n++][$pattern->getSubject()] = $triple->subj;
	    } else {
		$result[$n++][$pattern->getSubject()] = $triple->statement->subj;
	    }
	}
     }
     if(is_string($pattern->getPredicate())){
	$n = 0;
	foreach($resmodel['trip'] as $key => $triple){
	    if(isset($resmodel['graphvar'][$key]))
		$result[$n][$resmodel['graphvar'][$key]] = $resmodel['graph'][$key];
	
	    // FIXED
	    if(isset($triple->pred)) {
		$result[$n++][$pattern->getPredicate()] = $triple->pred;
	    } else {
		$result[$n++][$pattern->getPredicate()] = $triple->statement->pred;
	    }
	}
     }
     if(is_string($pattern->getObject())){
	$n = 0;
	foreach($resmodel['trip'] as $key => $triple){
	    if(isset($resmodel['graphvar'][$key]))
		$result[$n][$resmodel['graphvar'][$key]] = $resmodel['graph'][$key];
	
	    // FIXED
	    if(isset($triple->obj)) {
		$result[$n++][$pattern->getObject()] = $triple->obj;
	    } else {
		$result[$n++][$pattern->getObject()] = $triple->statement->obj;
	    }
	}
     }

     return $result;
}

[Rdfapi-php-interest] dataset->sparqlQuery() Bug?

[Markus S. <m.s...@hi...>]

Hi all,

first i have to say, RAP is a good work!

But now i run into a problem with a sparql query on a dataset. This is 
my query:

$q1_ = "
PREFIX map: <http://intranet/sitemap#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT *
FROM NAMED </graph1>
WHERE { ?y map:contains ?x }
LIMIT 20
";

The named graph "/graph1" exists and has up to 41.000 entries. The 
result i got is as follows:

$r = $dataset1->sparqlQuery($q1_);
SPARQLEngine::writeQueryResultAsHtmlTable($r);


No.	?y	?x
1.	unbound	unbound
2.	unbound	unbound
3.	unbound	unbound
4.	unbound	unbound
5.	unbound	unbound
6.	unbound	unbound
7.	unbound	unbound


... and so on till the 20th entry because of LIMIT 20. (Without the 
limit clause i would have more than 20.000 entries in the result). The 
problem is obvious, i get ?unbound results for each subject and object. 
Is this a "normal" behavior of sparql or is here a bug in the RAP sparql 
engine or better should i clean my eyeglasses?

Any notes to this are very welcome!

markus

Re: [Rdfapi-php-interest] Removing statement and children from model

[Richard C. <ri...@cy...>]

Hi Geraint,

On 2 Mar 2006, at 17:32, Geraint Edwards wrote:

> My data is in a strict hierarchical tree, 'nodes' have one and only  
> one parent and when I delete a 'node', say a member of a container,  
> I really want to remove all its descendents.
> If I use ResSeq->remove($myStatement) I am left with many orphans,  
> but if I use Model->findForward I should be able to find the 'sub- 
> tree' model and then  remove this model from my master model.  The  
> trouble is that my data is created by parsing the output from  
> another application which uses resources instead of blanknodes.
>
> Is there a reason that findForward only recurses down through  
> BlankNodes and not through resources too?

Yes, there's a reason. findForward computes the blank node closure of  
a statement and can be used to compute concise bounded descriptions  
(CBDs). Both seem to be useful to some folks and rely on recursing  
only over the blank nodes. So it's a different use case.

Richard

(Terminology nitpick: Blank nodes are resources too.)


>
> thanks
>
> Geraint
>
>
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting  
> language
> that extends applications into web and mobile media. Attend the  
> live webcast
> and join the prime developer group breaking into this new coding  
> territory!
> http://sel.as-us.falkag.net/sel? 
> cmd=lnk&kid=110944&bid=241720&dat=121642
> _______________________________________________
> Rdfapi-php-interest mailing list
> Rdf...@li...
> https://lists.sourceforge.net/lists/listinfo/rdfapi-php-interest
>

[Rdfapi-php-interest] Removing statement and children from model

[Geraint E. <rd...@co...>]

My data is in a strict hierarchical tree, 'nodes' have one and only one 
parent and when I delete a 'node', say a member of a container, I really 
want to remove all its descendents. 

If I use ResSeq->remove($myStatement) I am left with many orphans, but 
if I use Model->findForward I should be able to find the 'sub-tree' 
model and then  remove this model from my master model.  The trouble is 
that my data is created by parsing the output from another application 
which uses resources instead of blanknodes.

Is there a reason that findForward only recurses down through BlankNodes 
and not through resources too?

thanks

Geraint

[Rdfapi-php-interest] ResModel missing writeAsHTML function

[Geraint E. <rd...@co...>]

Just for completeness can we add:

    /**
    * Writes the RDF serialization of the MemModel as HTML.
    *
    * @access    public
    */ 
    function writeAsHTML()
    {
        $this->model->writeAsHtml();
    }


to ResModel.php

thanks

Geraint

Re: [Rdfapi-php-interest] non-ASCII characters

[Richard C. <ri...@cy...>]

Hi Shadi,

On 2 Mar 2006, at 03:29, Shadi Abou-Zahra wrote:
> Thanks for the feedback. The character encoding in the document =20
> headers are fine. After the query, the characters are escaped like =20
> this "\u00D0" (correct Unicode values but escaped instead of the =20
> actual characters).

Set UNIC_RDF to FALSE again to avoid this.

I've taken your example, saved the XML and PHP files to disk, changed =20=

the URL for generateModel() to the filename, called the page from the =20=

browser, and ithe bulgarian fragment is displayed correctly. (But the =20=

bulgarian bit in the file that you copy&pasted into the email is =20
displayed as gibberish by my email client, so I copy&pasted it from =20
your original email where it appeared fine, and saved the file as =20
UTF-8. Not sure if this is related to the problem or just email =20
misbehaving.)

Can you please verify that your version of the XML file is really =20
UTF-8 encoded? Or you could send it to me by *attaching* it to the =20
email, then I can check.

Also, can you put the script onto a webserver where we can se it?

Richard


> Here is a more complete example:
>
>
> *** DATA: <http://www.example.org/data.rdf>
>
> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
> <rdf:RDF xmlns:rdf=3D"http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>         xmlns:doc=3D"http://www.example.org/my/schema#"
>         xmlns:dc=3D"http://purl.org/dc/elements/1.1/">
>
>  <doc:featureType rdf:ID=3D"lang">
>    <dc:title rdf:parseType=3D"Literal">Language</dc:title>
>    <dc:description rdf:parseType=3D"Literal">The natural language of =20=

> the document.</dc:description>
>  </doc:featureType>
>
>  <doc:feature rdf:ID=3D"bg">
>    <dc:title rdf:parseType=3D"Literal">Bulgarian</dc:title>
>    <dc:description rdf:parseType=3D"Literal"><span =20
> lang=3D"bg">=C3=90=E2=80=98=C3=91=C5=A0=C3=90=C2=BB=C3=90=C2=B3=C3=90=C2=
=B0=C3=91=E2=82=AC=C3=91=C2=81=C3=90=C2=BA=C3=90=C2=B8</span> =
(Bulgarian)</=20
> dc:description>
>    <doc:isFeatureType rdf:resource=3D"#lang"/>
>  </doc:feature>
> </rdf:RDF>
>
>
> *** PAGE: <http://www.example.org/data.php>
>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" =20
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <html xmlns=3D"http://www.w3.org/1999/xhtml" xml:lang=3D"en-US" =20
> lang=3D"en-US">
> <head>
>  <meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8" />
>  <title>Document Features</title>
> </head>
> <?php
>  /* include libraries */
>  define("RDFAPI_INCLUDE_DIR", "/usr/local/lib/php/rdfapi-php/api/");
>  include(RDFAPI_INCLUDE_DIR . "RdfAPI.php");
>  include(RDFAPI_INCLUDE_DIR . "syntax/RdfParser.php");
>
>  $parser =3D new RdfParser();
>  $DB =3D $parser->generateModel("http://www.example.org/data.rdf");
>
>  function getFeatureList($DB) {
>    /* build RDQL query */
>    $query =3D "SELECT ?id, ?label, ?description WHERE (?id, =20
> <doc:isFeatureType>, ?type), (?id, <dc:description>, ?description), =20=

> (?type, <dc:description>, ?label) USING dc FOR <http://purl.org/dc/=20
> elements/1.1/> doc FOR <http://www.example.org/my/schema#>";
>    /* send query to database */
>    $resultSet =3D $DB->rdqlQueryasIterator($query);
>    /* array of results */
>    $features =3D array();
>    while($resultSet->hasNext()) {
>      $feature =3D $resultSet->next();
>      /* build array of results */
>      $features[] =3D array("id" =3D> $feature["?id"]->getLocalName(), =20=

> "label" =3D> $feature["?label"]->getLabel(), "description" =3D> =
$feature=20
> ["?description"]->getLabel());
>    }
>    return $features;
>  }
> ?>
> <body>
>  <dl>
> <?php
> $type =3D "";
> $features =3D getFeatureList($DB);
> foreach($features as $feature) {
>  if($type !=3D $feature["label"]) {
>    if($type !=3D "") {
> ?>
>    </ul></dd>
> <?php
>    }
>    $type =3D $feature["label"];
> ?>
>    <dt><?php printf($feature["label"]); ?></dt>
>    <dd><ul>
> <?php
>  }
> ?>
>      <li><?php printf($feature["description"]); ?></li>
> <?php
> }
> if($type !=3D "") {
> ?>
>    </ul></dd>
> <?php
> }
> ?>
>  </dl>
> </body>
> </html>
>
>
>
>
> Richard Cyganiak wrote:
>> Hi Shadi,
>> On 1 Mar 2006, at 11:25, Shadi Abou-Zahra wrote:
>>> Hi,
>>>
>>> Does RAP support non-ASCII characters in XML literals and if so, =20
>>> how?
>> Yes, RAP can do that. But, as always, getting anything beyond US-=20
>> ASCII to work can be a serious pain.
>> It's all a question of getting the character encoding right. By =20
>> default, RAP assumes all data to be UTF-8 encoded. If your data is =20=

>> not UTF-8 encoded, then you either have to convert it to UTF-8 =20
>> (recommended) or set DEFAULT_ENCODING in constants.php to the =20
>> encoding of your data (For the cyrillic alphabet, try "iso-8859-5" =20=

>> or "windows-1251").
>> Make sure that all your XML files start with an xml declaration =20
>> (e.g. "<?xml version=3D"1.0" encoding=3D"UTF-8"?>", or whatever =20
>> encoding you're using instead of UTF-8). RAP-generated XML files =20
>> will have this automatically.
>> If you output HTML, make sure it has this inside the <title> element:
>> <meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3DUTF-8">
>> (or whatever encoding you're using instead of UTF-8). I'm not sure =20=

>> if all RAP-generated HTML has this.
>> RAP can't convert between different encodings, and can't combine =20
>> RDF input from different encodings. That's why I always recommend =20
>> doing everything in UTF-8. Most other encodings lack some =20
>> characters that some people will need.
>> If this doesn't help, could you please provide a more complete =20
>> example of what you're doing and where it doesn't work.
>> Yours,
>> Richard
>>> For example, to query and output the following information:
>>>
>>>
>>> <dc:description rdf:parseType=3D"Literal"><span =20
>>> lang=3D"bg">=D0=91=D1=8A=D0=BB=D0=B3=D0=B0=D1=80=D1=81=D0=BA=D0=B8</sp=
an> (Bulgarian)</dc:description>
>>>
>>>
>>> Note: I've tried setting the "UNIC_RDF" constant to FALSE (in api/=20=

>>> constants.php) but that did not help. This is what is returned:
>>>
>>>
>>> <span lang=3D\\"bg\\">\u00D0\u0091\u00D1\u008A\u00D0\u00BB\u00D0=20
>>> \u00B3\u00D0\u00B0\u00D1\u0080\u00D1\u0081\u00D0\u00BA\u00D0=20
>>> \u00B8</span> (Bulgarian)
>>>
>>>
>>> Thanks,
>>>  Shadi
>>>
>>>
>>> -------------------------------------------------------
>>> This SF.Net email is sponsored by xPML, a groundbreaking =20
>>> scripting language
>>> that extends applications into web and mobile media. Attend the =20
>>> live webcast
>>> and join the prime developer group breaking into this new coding =20
>>> territory!
>>> http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=110944&bid$1720&dat=1216=
42
>>> _______________________________________________
>>> Rdfapi-php-interest mailing list
>>> Rdf...@li...
>>> https://lists.sourceforge.net/lists/listinfo/rdfapi-php-interest
>>>
>
> --=20
> Lieber Querschnitt als Durchschnitt         - Peter Laisacher, =20
> Salzburger Rugby Bulls
>