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Posted to general@incubator.apache.org by Leo Simons <ma...@leosimons.com> on 2007/02/02 09:17:43 UTC
[VOTE] TripleSoup - a SPARQL endpoint for httpd
Hi all,
This is a vote on a previously posted proposal to start a rdf
database server project at apache. The entire proposal text is
included below. There is only one change from the one posted to the
[proposal] thread -- we will start without a triplesoup-users@
mailing list.
Please place your votes!
+1 from me.
This vote will run until we have a huge amount of enthousiastic +1s,
with a sizeable amount of them from the Incubator PMC, and at a
minimum for 72 hours. If you're not a part of the incubator PMC,
you're still welcome to express support (or lack of it) for the
proposal by voting; I will sort out votes when counting. (formal
voting rules on incubator website)
cheers!
- Leo
---
= summary =
TripleSoup is the simplest thing that you can do to turn your apache
web server into a SPARQL endpoint.
TripleSoup will be an RDF [2] store [3], tooling to work with that
database, and a REST [4] web interface to talk to that database using
SPARQL [5], implemented as an apache webserver module.
{{{
Target: TLP
Sponsor: Incubator PMC
Champion: Leo Simons <le...@apache.org>
Mentors: Dirk-Willem van Gulik <di...@apache.org>,
Ben Hyde <bh...@apache.org>,
Stefano Mazzocchi <st...@apache.org>,
Leo Simons <le...@apache.org>
Resources: SVN: https://svn.apache.org/repos/asf/incubator/
triplesoup/
Website: http://incubator.apache.org/triplesoup/
Jira: http://issues.apache.org/jira/browse/TRIPLES
Wiki: http://wiki.apache.org/triplesoup/
Mailing lists:
triplesoup-dev@incubator.apache.org
triplesoup-commits@incubator.apache.org
triplesoup-private@incubator.apache.org
Moderators: leosimons@apache.org
stefano@apache.org
dreid@apache.org
Initial committers:
Dave Beckett <da...@dajobe.org>, redland author
Dirk-Willem van Gulik <di...@apache.org>,
Ben Hyde <bh...@apache.org>,
Stefano Mazzocchi <st...@apache.org>,
Andrea Marchesini <ba...@theveniceproject.com>, b store
author
Alberto Reggiori <al...@asemantics.com>, rdfstore author
David Reid <dr...@apache.org>,
Leo Simons <le...@apache.org>
Initial source: mod_sparql, commercial triple store,
existing open source triple store
Known risks: None
Technologies: c
Reference: http://wiki.apache.org/incubator/TripleSoupProposal
}}}
= Proposal details =
== Technology (basics) ==
What is RDF? It is just about any kind of data, represented as
triples of
(subject, predicate, object), usually with a rich vocabulary
describing the
semantics of the data (with the vocabulary typically also encoded as
triples).
This data has a representation as RDF/XML as well as using other
formats such
as N3, and a query language SPARQL for searching through it. See [6]
for an
overview.
So if it is just some data in some format, why does it need a special
server? Because RDF data is fundamentally not constrained to a
"file", and
there often is no "resource identifier" that readily identifies
something as a
"document" which can be served up over HTTP.
So why the REST interface? RDF is one of the building blocks proposed
for the
"semantic web", and that's why a system that works well with/over
HTTP is
needed from the start.
== Technology (concrete) ==
This is just an example. Imagine that there is an application
"someapp" on
the host foo.example.com which provides access to information about
books,
and you want to get a list of those books (their URIs) and the names
of the
books.
{{{
$ telnet foo.example.com 80
SELECT /someapp HTTP/1.0
Host: foo.example.com
Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/
Accept: application/sparql-results+xml, rdf/xml, rdf/n3
PREFIX books: <http://example.org/book/>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
SELECT ?book ?title
WHERE
{ ?book dc:title ?title }
HTTP/1.0 200 Ok
Content-Type: application/sparql-results+xml
Content-Length: 1234
<?xml version="1.0"?>
<sparql
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:xs="http://www.w3.org/2001/XMLSchema#"
xmlns="http://www.w3.org/2005/sparql-results#">
<head>
<variable name="book"/>
<variable name="title"/>
</head>
<results ordered="false" distinct="false">
<result>
<binding name="book">
<uri>http://example.org/book/book6</uri>
</binding>
<binding name="title">
<literal>Harry Potter and the Half-Blood Prince</literal>
</binding>
</result>
</results>
</sparql>
Connection closed by foo.example.com
$
}}}
It turns out there's only one book in the database in this example.
(Sample data taken from http://www.sparql.org/). David Reid has some
code that
does something not unlike this already [7], implemented as a httpd
module,
using the Redland library [11,12] as its backend store.
== What would you use TripleSoup for? ==
* It could be a backend for piggy bank [8].
* It could be a backend for the next version of wikipedia.
* It could be a backend for an "open" version of iTunes or IMDB.
* It could be the backend for the information management system of the
Dutch ministry of water management [9].
* It could be the backend for projects.a.o [10] and similar
applications.
* Most importantly, it could be a backend for dozens of useful new
innovative
projects that no-one has envisioned yet.
== The initial source ==
RDFstore is a standalone RDF storage system implemented as a C
library, licensed
under the ASL 1.1. It has perl bindings. Find its distribution at [15].
mod_sparql [7] is an in-development apache module that implements a
SPARQL
endpoint. It is licensed under the Apache License 2.0. It uses
redland as a
backend. The SVN repository can be found at [7].
B is an in-development storage backend for Redland implemented as a
standalone
C library. It is currently a closed source codebase. A code snapshot
can be
found at [16].
== The initial committers ==
Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
hopefully need no
introduction.
Dave Beckett is the primary author of the Redland RDF application
framework.
Alberto Reggiori is the primary author of rdfstore, an rdf store
developed by
asemantics [13], which will be contributed to TripleSoup. He is a
partner at
asemantics.
Andrea Marchesini is the primary author of B, a storage backend for RDF
developed at Joost [14], which will be contributed to TripleSoup.
All initial committers have experience working on open source
projects. They
work for at least 5 different companies.
== TripleSoup as an apache project ==
We think TripleSoup will have to reference dozens of specifications
from the
W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
from the
IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
with quite
a few existing open source projects (like the redland RDF libraries
as well as
apache apr&httpd). As such, it seems like TripleSoup should fit in
really well
at apache.
The responses we got from various members of the RDF and semantic web
communities so far when discussing this proposal with them have all been
quite positive, and we expect and hope there'll be quite a few people
new to apache joining the project soon after it starts.
Most importantly, we think this project will be useful, innovative, and
fun!
= References =
{{{
[1] http://incubator.apache.org/
[2] http://www.w3.org/RDF/
[3] these are often called "triple stores"
[4] http://www.ics.uci.edu/~fielding/pubs/dissertation/
rest_arch_style.htm
[5] http://www.w3.org/TR/rdf-sparql-query/
[6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
[7] http://david-reid.com/repos/public/mod_sparql/
[8] http://simile.mit.edu/wiki/Piggy_Bank
[9] http://www.wadi.nl/uk/
[10] http://projects.apache.org/
[11] http://www.librdf.net/
[12] http://svn.librdf.org/repository/
[13] http://www.asemantics.com/
[14] http://www.joost.com/
[15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
[16] http://opensource.joost.com/libb/
}}}
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Brian McCallister <br...@skife.org>.
+1
-Brian
On Feb 2, 2007, at 12:17 AM, Leo Simons wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
>
> +1 from me.
>
> This vote will run until we have a huge amount of enthousiastic +1s,
> with a sizeable amount of them from the Incubator PMC, and at a
> minimum for 72 hours. If you're not a part of the incubator PMC,
> you're still welcome to express support (or lack of it) for the
> proposal by voting; I will sort out votes when counting. (formal
> voting rules on incubator website)
>
> cheers!
>
> - Leo
>
> ---
> = summary =
>
> TripleSoup is the simplest thing that you can do to turn your apache
> web server into a SPARQL endpoint.
>
> TripleSoup will be an RDF [2] store [3], tooling to work with that
> database, and a REST [4] web interface to talk to that database using
> SPARQL [5], implemented as an apache webserver module.
>
> {{{
> Target: TLP
> Sponsor: Incubator PMC
> Champion: Leo Simons <le...@apache.org>
> Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Leo Simons <le...@apache.org>
> Resources: SVN: https://svn.apache.org/repos/asf/incubator/triplesoup/
> Website: http://incubator.apache.org/triplesoup/
> Jira: http://issues.apache.org/jira/browse/TRIPLES
> Wiki: http://wiki.apache.org/triplesoup/
> Mailing lists:
> triplesoup-dev@incubator.apache.org
> triplesoup-commits@incubator.apache.org
> triplesoup-private@incubator.apache.org
> Moderators: leosimons@apache.org
> stefano@apache.org
> dreid@apache.org
> Initial committers:
> Dave Beckett <da...@dajobe.org>, redland author
> Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Andrea Marchesini <ba...@theveniceproject.com>, b store
> author
> Alberto Reggiori <al...@asemantics.com>, rdfstore author
> David Reid <dr...@apache.org>,
> Leo Simons <le...@apache.org>
> Initial source: mod_sparql, commercial triple store,
> existing open source triple store
> Known risks: None
> Technologies: c
> Reference: http://wiki.apache.org/incubator/
> TripleSoupProposal
> }}}
>
> = Proposal details =
>
> == Technology (basics) ==
>
> What is RDF? It is just about any kind of data, represented as
> triples of
> (subject, predicate, object), usually with a rich vocabulary
> describing the
> semantics of the data (with the vocabulary typically also encoded as
> triples).
>
> This data has a representation as RDF/XML as well as using other
> formats such
> as N3, and a query language SPARQL for searching through it. See [6]
> for an
> overview.
>
> So if it is just some data in some format, why does it need a special
> server? Because RDF data is fundamentally not constrained to a
> "file", and
> there often is no "resource identifier" that readily identifies
> something as a
> "document" which can be served up over HTTP.
>
> So why the REST interface? RDF is one of the building blocks
> proposed for the
> "semantic web", and that's why a system that works well with/over
> HTTP is
> needed from the start.
>
> == Technology (concrete) ==
>
> This is just an example. Imagine that there is an application
> "someapp" on
> the host foo.example.com which provides access to information about
> books,
> and you want to get a list of those books (their URIs) and the names
> of the
> books.
>
> {{{
> $ telnet foo.example.com 80
> SELECT /someapp HTTP/1.0
> Host: foo.example.com
> Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-
> query-20060406/
> Accept: application/sparql-results+xml, rdf/xml, rdf/n3
>
> PREFIX books: <http://example.org/book/>
> PREFIX dc: <http://purl.org/dc/elements/1.1/>
> SELECT ?book ?title
> WHERE
> { ?book dc:title ?title }
>
> HTTP/1.0 200 Ok
> Content-Type: application/sparql-results+xml
> Content-Length: 1234
>
> <?xml version="1.0"?>
> <sparql
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> <variable name="book"/>
> <variable name="title"/>
> </head>
> <results ordered="false" distinct="false">
> <result>
> <binding name="book">
> <uri>http://example.org/book/book6</uri>
> </binding>
> <binding name="title">
> <literal>Harry Potter and the Half-Blood Prince</literal>
> </binding>
> </result>
> </results>
> </sparql>
>
> Connection closed by foo.example.com
> $
> }}}
>
> It turns out there's only one book in the database in this example.
> (Sample data taken from http://www.sparql.org/). David Reid has some
> code that
> does something not unlike this already [7], implemented as a httpd
> module,
> using the Redland library [11,12] as its backend store.
>
> == What would you use TripleSoup for? ==
>
> * It could be a backend for piggy bank [8].
>
> * It could be a backend for the next version of wikipedia.
>
> * It could be a backend for an "open" version of iTunes or IMDB.
>
> * It could be the backend for the information management system of the
> Dutch ministry of water management [9].
>
> * It could be the backend for projects.a.o [10] and similar
> applications.
>
> * Most importantly, it could be a backend for dozens of useful new
> innovative
> projects that no-one has envisioned yet.
>
> == The initial source ==
>
> RDFstore is a standalone RDF storage system implemented as a C
> library, licensed
> under the ASL 1.1. It has perl bindings. Find its distribution at
> [15].
>
> mod_sparql [7] is an in-development apache module that implements a
> SPARQL
> endpoint. It is licensed under the Apache License 2.0. It uses
> redland as a
> backend. The SVN repository can be found at [7].
>
> B is an in-development storage backend for Redland implemented as a
> standalone
> C library. It is currently a closed source codebase. A code snapshot
> can be
> found at [16].
>
> == The initial committers ==
>
> Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
> hopefully need no
> introduction.
>
> Dave Beckett is the primary author of the Redland RDF application
> framework.
>
> Alberto Reggiori is the primary author of rdfstore, an rdf store
> developed by
> asemantics [13], which will be contributed to TripleSoup. He is a
> partner at
> asemantics.
>
> Andrea Marchesini is the primary author of B, a storage backend for
> RDF
> developed at Joost [14], which will be contributed to TripleSoup.
>
> All initial committers have experience working on open source
> projects. They
> work for at least 5 different companies.
>
> == TripleSoup as an apache project ==
>
> We think TripleSoup will have to reference dozens of specifications
> from the
> W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
> from the
> IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
> with quite
> a few existing open source projects (like the redland RDF libraries
> as well as
> apache apr&httpd). As such, it seems like TripleSoup should fit in
> really well
> at apache.
>
> The responses we got from various members of the RDF and semantic web
> communities so far when discussing this proposal with them have all
> been
> quite positive, and we expect and hope there'll be quite a few people
> new to apache joining the project soon after it starts.
>
> Most importantly, we think this project will be useful, innovative,
> and
> fun!
>
> = References =
>
> {{{
> [1] http://incubator.apache.org/
> [2] http://www.w3.org/RDF/
> [3] these are often called "triple stores"
> [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm
> [5] http://www.w3.org/TR/rdf-sparql-query/
> [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> [7] http://david-reid.com/repos/public/mod_sparql/
> [8] http://simile.mit.edu/wiki/Piggy_Bank
> [9] http://www.wadi.nl/uk/
> [10] http://projects.apache.org/
> [11] http://www.librdf.net/
> [12] http://svn.librdf.org/repository/
> [13] http://www.asemantics.com/
> [14] http://www.joost.com/
> [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> [16] http://opensource.joost.com/libb/
> }}}
>
>
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> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> For additional commands, e-mail: general-help@incubator.apache.org
>
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Bertrand Delacretaz <bd...@apache.org>.
On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> ...This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list...
+1
-Bertrand
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Ben Hyde <bh...@pobox.com>.
On Feb 2, 2007, at 3:17 AM, Leo Simons wrote:
> place your votes!
+1
- ben, who's not on the incubator PMC
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Davanum Srinivas <da...@gmail.com>.
+1 from me.
-- dims
On 2/2/07, Yoav Shapira <yo...@apache.org> wrote:
> +1, sounds very interesting.
>
> Yoav
>
> On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> > Hi all,
> >
> > This is a vote on a previously posted proposal to start a rdf
> > database server project at apache. The entire proposal text is
> > included below. There is only one change from the one posted to the
> > [proposal] thread -- we will start without a triplesoup-users@
> > mailing list.
> >
> > Please place your votes!
> >
> > +1 from me.
> >
> > This vote will run until we have a huge amount of enthousiastic +1s,
> > with a sizeable amount of them from the Incubator PMC, and at a
> > minimum for 72 hours. If you're not a part of the incubator PMC,
> > you're still welcome to express support (or lack of it) for the
> > proposal by voting; I will sort out votes when counting. (formal
> > voting rules on incubator website)
> >
> > cheers!
> >
> > - Leo
> >
> > ---
> > = summary =
> >
> > TripleSoup is the simplest thing that you can do to turn your apache
> > web server into a SPARQL endpoint.
> >
> > TripleSoup will be an RDF [2] store [3], tooling to work with that
> > database, and a REST [4] web interface to talk to that database using
> > SPARQL [5], implemented as an apache webserver module.
> >
> > {{{
> > Target: TLP
> > Sponsor: Incubator PMC
> > Champion: Leo Simons <le...@apache.org>
> > Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> > Ben Hyde <bh...@apache.org>,
> > Stefano Mazzocchi <st...@apache.org>,
> > Leo Simons <le...@apache.org>
> > Resources: SVN: https://svn.apache.org/repos/asf/incubator/
> > triplesoup/
> > Website: http://incubator.apache.org/triplesoup/
> > Jira: http://issues.apache.org/jira/browse/TRIPLES
> > Wiki: http://wiki.apache.org/triplesoup/
> > Mailing lists:
> > triplesoup-dev@incubator.apache.org
> > triplesoup-commits@incubator.apache.org
> > triplesoup-private@incubator.apache.org
> > Moderators: leosimons@apache.org
> > stefano@apache.org
> > dreid@apache.org
> > Initial committers:
> > Dave Beckett <da...@dajobe.org>, redland author
> > Dirk-Willem van Gulik <di...@apache.org>,
> > Ben Hyde <bh...@apache.org>,
> > Stefano Mazzocchi <st...@apache.org>,
> > Andrea Marchesini <ba...@theveniceproject.com>, b store
> > author
> > Alberto Reggiori <al...@asemantics.com>, rdfstore author
> > David Reid <dr...@apache.org>,
> > Leo Simons <le...@apache.org>
> > Initial source: mod_sparql, commercial triple store,
> > existing open source triple store
> > Known risks: None
> > Technologies: c
> > Reference: http://wiki.apache.org/incubator/TripleSoupProposal
> > }}}
> >
> > = Proposal details =
> >
> > == Technology (basics) ==
> >
> > What is RDF? It is just about any kind of data, represented as
> > triples of
> > (subject, predicate, object), usually with a rich vocabulary
> > describing the
> > semantics of the data (with the vocabulary typically also encoded as
> > triples).
> >
> > This data has a representation as RDF/XML as well as using other
> > formats such
> > as N3, and a query language SPARQL for searching through it. See [6]
> > for an
> > overview.
> >
> > So if it is just some data in some format, why does it need a special
> > server? Because RDF data is fundamentally not constrained to a
> > "file", and
> > there often is no "resource identifier" that readily identifies
> > something as a
> > "document" which can be served up over HTTP.
> >
> > So why the REST interface? RDF is one of the building blocks proposed
> > for the
> > "semantic web", and that's why a system that works well with/over
> > HTTP is
> > needed from the start.
> >
> > == Technology (concrete) ==
> >
> > This is just an example. Imagine that there is an application
> > "someapp" on
> > the host foo.example.com which provides access to information about
> > books,
> > and you want to get a list of those books (their URIs) and the names
> > of the
> > books.
> >
> > {{{
> > $ telnet foo.example.com 80
> > SELECT /someapp HTTP/1.0
> > Host: foo.example.com
> > Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/
> > Accept: application/sparql-results+xml, rdf/xml, rdf/n3
> >
> > PREFIX books: <http://example.org/book/>
> > PREFIX dc: <http://purl.org/dc/elements/1.1/>
> > SELECT ?book ?title
> > WHERE
> > { ?book dc:title ?title }
> >
> > HTTP/1.0 200 Ok
> > Content-Type: application/sparql-results+xml
> > Content-Length: 1234
> >
> > <?xml version="1.0"?>
> > <sparql
> > xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> > xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> > xmlns="http://www.w3.org/2005/sparql-results#">
> > <head>
> > <variable name="book"/>
> > <variable name="title"/>
> > </head>
> > <results ordered="false" distinct="false">
> > <result>
> > <binding name="book">
> > <uri>http://example.org/book/book6</uri>
> > </binding>
> > <binding name="title">
> > <literal>Harry Potter and the Half-Blood Prince</literal>
> > </binding>
> > </result>
> > </results>
> > </sparql>
> >
> > Connection closed by foo.example.com
> > $
> > }}}
> >
> > It turns out there's only one book in the database in this example.
> > (Sample data taken from http://www.sparql.org/). David Reid has some
> > code that
> > does something not unlike this already [7], implemented as a httpd
> > module,
> > using the Redland library [11,12] as its backend store.
> >
> > == What would you use TripleSoup for? ==
> >
> > * It could be a backend for piggy bank [8].
> >
> > * It could be a backend for the next version of wikipedia.
> >
> > * It could be a backend for an "open" version of iTunes or IMDB.
> >
> > * It could be the backend for the information management system of the
> > Dutch ministry of water management [9].
> >
> > * It could be the backend for projects.a.o [10] and similar
> > applications.
> >
> > * Most importantly, it could be a backend for dozens of useful new
> > innovative
> > projects that no-one has envisioned yet.
> >
> > == The initial source ==
> >
> > RDFstore is a standalone RDF storage system implemented as a C
> > library, licensed
> > under the ASL 1.1. It has perl bindings. Find its distribution at [15].
> >
> > mod_sparql [7] is an in-development apache module that implements a
> > SPARQL
> > endpoint. It is licensed under the Apache License 2.0. It uses
> > redland as a
> > backend. The SVN repository can be found at [7].
> >
> > B is an in-development storage backend for Redland implemented as a
> > standalone
> > C library. It is currently a closed source codebase. A code snapshot
> > can be
> > found at [16].
> >
> > == The initial committers ==
> >
> > Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
> > hopefully need no
> > introduction.
> >
> > Dave Beckett is the primary author of the Redland RDF application
> > framework.
> >
> > Alberto Reggiori is the primary author of rdfstore, an rdf store
> > developed by
> > asemantics [13], which will be contributed to TripleSoup. He is a
> > partner at
> > asemantics.
> >
> > Andrea Marchesini is the primary author of B, a storage backend for RDF
> > developed at Joost [14], which will be contributed to TripleSoup.
> >
> > All initial committers have experience working on open source
> > projects. They
> > work for at least 5 different companies.
> >
> > == TripleSoup as an apache project ==
> >
> > We think TripleSoup will have to reference dozens of specifications
> > from the
> > W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
> > from the
> > IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
> > with quite
> > a few existing open source projects (like the redland RDF libraries
> > as well as
> > apache apr&httpd). As such, it seems like TripleSoup should fit in
> > really well
> > at apache.
> >
> > The responses we got from various members of the RDF and semantic web
> > communities so far when discussing this proposal with them have all been
> > quite positive, and we expect and hope there'll be quite a few people
> > new to apache joining the project soon after it starts.
> >
> > Most importantly, we think this project will be useful, innovative, and
> > fun!
> >
> > = References =
> >
> > {{{
> > [1] http://incubator.apache.org/
> > [2] http://www.w3.org/RDF/
> > [3] these are often called "triple stores"
> > [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/
> > rest_arch_style.htm
> > [5] http://www.w3.org/TR/rdf-sparql-query/
> > [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> > [7] http://david-reid.com/repos/public/mod_sparql/
> > [8] http://simile.mit.edu/wiki/Piggy_Bank
> > [9] http://www.wadi.nl/uk/
> > [10] http://projects.apache.org/
> > [11] http://www.librdf.net/
> > [12] http://svn.librdf.org/repository/
> > [13] http://www.asemantics.com/
> > [14] http://www.joost.com/
> > [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> > [16] http://opensource.joost.com/libb/
> > }}}
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> > For additional commands, e-mail: general-help@incubator.apache.org
> >
> >
>
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>
--
Davanum Srinivas :: http://wso2.org/ :: Oxygen for Web Services Developers
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Yoav Shapira <yo...@apache.org>.
+1, sounds very interesting.
Yoav
On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
>
> +1 from me.
>
> This vote will run until we have a huge amount of enthousiastic +1s,
> with a sizeable amount of them from the Incubator PMC, and at a
> minimum for 72 hours. If you're not a part of the incubator PMC,
> you're still welcome to express support (or lack of it) for the
> proposal by voting; I will sort out votes when counting. (formal
> voting rules on incubator website)
>
> cheers!
>
> - Leo
>
> ---
> = summary =
>
> TripleSoup is the simplest thing that you can do to turn your apache
> web server into a SPARQL endpoint.
>
> TripleSoup will be an RDF [2] store [3], tooling to work with that
> database, and a REST [4] web interface to talk to that database using
> SPARQL [5], implemented as an apache webserver module.
>
> {{{
> Target: TLP
> Sponsor: Incubator PMC
> Champion: Leo Simons <le...@apache.org>
> Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Leo Simons <le...@apache.org>
> Resources: SVN: https://svn.apache.org/repos/asf/incubator/
> triplesoup/
> Website: http://incubator.apache.org/triplesoup/
> Jira: http://issues.apache.org/jira/browse/TRIPLES
> Wiki: http://wiki.apache.org/triplesoup/
> Mailing lists:
> triplesoup-dev@incubator.apache.org
> triplesoup-commits@incubator.apache.org
> triplesoup-private@incubator.apache.org
> Moderators: leosimons@apache.org
> stefano@apache.org
> dreid@apache.org
> Initial committers:
> Dave Beckett <da...@dajobe.org>, redland author
> Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Andrea Marchesini <ba...@theveniceproject.com>, b store
> author
> Alberto Reggiori <al...@asemantics.com>, rdfstore author
> David Reid <dr...@apache.org>,
> Leo Simons <le...@apache.org>
> Initial source: mod_sparql, commercial triple store,
> existing open source triple store
> Known risks: None
> Technologies: c
> Reference: http://wiki.apache.org/incubator/TripleSoupProposal
> }}}
>
> = Proposal details =
>
> == Technology (basics) ==
>
> What is RDF? It is just about any kind of data, represented as
> triples of
> (subject, predicate, object), usually with a rich vocabulary
> describing the
> semantics of the data (with the vocabulary typically also encoded as
> triples).
>
> This data has a representation as RDF/XML as well as using other
> formats such
> as N3, and a query language SPARQL for searching through it. See [6]
> for an
> overview.
>
> So if it is just some data in some format, why does it need a special
> server? Because RDF data is fundamentally not constrained to a
> "file", and
> there often is no "resource identifier" that readily identifies
> something as a
> "document" which can be served up over HTTP.
>
> So why the REST interface? RDF is one of the building blocks proposed
> for the
> "semantic web", and that's why a system that works well with/over
> HTTP is
> needed from the start.
>
> == Technology (concrete) ==
>
> This is just an example. Imagine that there is an application
> "someapp" on
> the host foo.example.com which provides access to information about
> books,
> and you want to get a list of those books (their URIs) and the names
> of the
> books.
>
> {{{
> $ telnet foo.example.com 80
> SELECT /someapp HTTP/1.0
> Host: foo.example.com
> Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/
> Accept: application/sparql-results+xml, rdf/xml, rdf/n3
>
> PREFIX books: <http://example.org/book/>
> PREFIX dc: <http://purl.org/dc/elements/1.1/>
> SELECT ?book ?title
> WHERE
> { ?book dc:title ?title }
>
> HTTP/1.0 200 Ok
> Content-Type: application/sparql-results+xml
> Content-Length: 1234
>
> <?xml version="1.0"?>
> <sparql
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> <variable name="book"/>
> <variable name="title"/>
> </head>
> <results ordered="false" distinct="false">
> <result>
> <binding name="book">
> <uri>http://example.org/book/book6</uri>
> </binding>
> <binding name="title">
> <literal>Harry Potter and the Half-Blood Prince</literal>
> </binding>
> </result>
> </results>
> </sparql>
>
> Connection closed by foo.example.com
> $
> }}}
>
> It turns out there's only one book in the database in this example.
> (Sample data taken from http://www.sparql.org/). David Reid has some
> code that
> does something not unlike this already [7], implemented as a httpd
> module,
> using the Redland library [11,12] as its backend store.
>
> == What would you use TripleSoup for? ==
>
> * It could be a backend for piggy bank [8].
>
> * It could be a backend for the next version of wikipedia.
>
> * It could be a backend for an "open" version of iTunes or IMDB.
>
> * It could be the backend for the information management system of the
> Dutch ministry of water management [9].
>
> * It could be the backend for projects.a.o [10] and similar
> applications.
>
> * Most importantly, it could be a backend for dozens of useful new
> innovative
> projects that no-one has envisioned yet.
>
> == The initial source ==
>
> RDFstore is a standalone RDF storage system implemented as a C
> library, licensed
> under the ASL 1.1. It has perl bindings. Find its distribution at [15].
>
> mod_sparql [7] is an in-development apache module that implements a
> SPARQL
> endpoint. It is licensed under the Apache License 2.0. It uses
> redland as a
> backend. The SVN repository can be found at [7].
>
> B is an in-development storage backend for Redland implemented as a
> standalone
> C library. It is currently a closed source codebase. A code snapshot
> can be
> found at [16].
>
> == The initial committers ==
>
> Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
> hopefully need no
> introduction.
>
> Dave Beckett is the primary author of the Redland RDF application
> framework.
>
> Alberto Reggiori is the primary author of rdfstore, an rdf store
> developed by
> asemantics [13], which will be contributed to TripleSoup. He is a
> partner at
> asemantics.
>
> Andrea Marchesini is the primary author of B, a storage backend for RDF
> developed at Joost [14], which will be contributed to TripleSoup.
>
> All initial committers have experience working on open source
> projects. They
> work for at least 5 different companies.
>
> == TripleSoup as an apache project ==
>
> We think TripleSoup will have to reference dozens of specifications
> from the
> W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
> from the
> IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
> with quite
> a few existing open source projects (like the redland RDF libraries
> as well as
> apache apr&httpd). As such, it seems like TripleSoup should fit in
> really well
> at apache.
>
> The responses we got from various members of the RDF and semantic web
> communities so far when discussing this proposal with them have all been
> quite positive, and we expect and hope there'll be quite a few people
> new to apache joining the project soon after it starts.
>
> Most importantly, we think this project will be useful, innovative, and
> fun!
>
> = References =
>
> {{{
> [1] http://incubator.apache.org/
> [2] http://www.w3.org/RDF/
> [3] these are often called "triple stores"
> [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/
> rest_arch_style.htm
> [5] http://www.w3.org/TR/rdf-sparql-query/
> [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> [7] http://david-reid.com/repos/public/mod_sparql/
> [8] http://simile.mit.edu/wiki/Piggy_Bank
> [9] http://www.wadi.nl/uk/
> [10] http://projects.apache.org/
> [11] http://www.librdf.net/
> [12] http://svn.librdf.org/repository/
> [13] http://www.asemantics.com/
> [14] http://www.joost.com/
> [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> [16] http://opensource.joost.com/libb/
> }}}
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
> For additional commands, e-mail: general-help@incubator.apache.org
>
>
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Thilo Goetz <tw...@gmx.de>.
+1 (non-binding)
Sounds like a very useful (and fun) effort to me.
--Thilo
Leo Simons wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf database
> server project at apache. The entire proposal text is included below.
> There is only one change from the one posted to the [proposal] thread --
> we will start without a triplesoup-users@ mailing list.
>
> Please place your votes!
>
> +1 from me.
>
> This vote will run until we have a huge amount of enthousiastic +1s,
> with a sizeable amount of them from the Incubator PMC, and at a minimum
> for 72 hours. If you're not a part of the incubator PMC, you're still
> welcome to express support (or lack of it) for the proposal by voting; I
> will sort out votes when counting. (formal voting rules on incubator
> website)
>
> cheers!
>
> - Leo
>
> ---
> = summary =
>
> TripleSoup is the simplest thing that you can do to turn your apache
> web server into a SPARQL endpoint.
>
> TripleSoup will be an RDF [2] store [3], tooling to work with that
> database, and a REST [4] web interface to talk to that database using
> SPARQL [5], implemented as an apache webserver module.
>
> {{{
> Target: TLP
> Sponsor: Incubator PMC
> Champion: Leo Simons <le...@apache.org>
> Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Leo Simons <le...@apache.org>
> Resources: SVN: https://svn.apache.org/repos/asf/incubator/triplesoup/
> Website: http://incubator.apache.org/triplesoup/
> Jira: http://issues.apache.org/jira/browse/TRIPLES
> Wiki: http://wiki.apache.org/triplesoup/
> Mailing lists:
> triplesoup-dev@incubator.apache.org
> triplesoup-commits@incubator.apache.org
> triplesoup-private@incubator.apache.org
> Moderators: leosimons@apache.org
> stefano@apache.org
> dreid@apache.org
> Initial committers:
> Dave Beckett <da...@dajobe.org>, redland author
> Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Andrea Marchesini <ba...@theveniceproject.com>, b store author
> Alberto Reggiori <al...@asemantics.com>, rdfstore author
> David Reid <dr...@apache.org>,
> Leo Simons <le...@apache.org>
> Initial source: mod_sparql, commercial triple store,
> existing open source triple store
> Known risks: None
> Technologies: c
> Reference: http://wiki.apache.org/incubator/TripleSoupProposal
> }}}
>
> = Proposal details =
>
> == Technology (basics) ==
>
> What is RDF? It is just about any kind of data, represented as triples of
> (subject, predicate, object), usually with a rich vocabulary describing the
> semantics of the data (with the vocabulary typically also encoded as
> triples).
>
> This data has a representation as RDF/XML as well as using other formats
> such
> as N3, and a query language SPARQL for searching through it. See [6] for an
> overview.
>
> So if it is just some data in some format, why does it need a special
> server? Because RDF data is fundamentally not constrained to a "file", and
> there often is no "resource identifier" that readily identifies
> something as a
> "document" which can be served up over HTTP.
>
> So why the REST interface? RDF is one of the building blocks proposed
> for the
> "semantic web", and that's why a system that works well with/over HTTP is
> needed from the start.
>
> == Technology (concrete) ==
>
> This is just an example. Imagine that there is an application "someapp" on
> the host foo.example.com which provides access to information about books,
> and you want to get a list of those books (their URIs) and the names of the
> books.
>
> {{{
> $ telnet foo.example.com 80
> SELECT /someapp HTTP/1.0
> Host: foo.example.com
> Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/
> Accept: application/sparql-results+xml, rdf/xml, rdf/n3
>
> PREFIX books: <http://example.org/book/>
> PREFIX dc: <http://purl.org/dc/elements/1.1/>
> SELECT ?book ?title
> WHERE
> { ?book dc:title ?title }
>
> HTTP/1.0 200 Ok
> Content-Type: application/sparql-results+xml
> Content-Length: 1234
>
> <?xml version="1.0"?>
> <sparql
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> <variable name="book"/>
> <variable name="title"/>
> </head>
> <results ordered="false" distinct="false">
> <result>
> <binding name="book">
> <uri>http://example.org/book/book6</uri>
> </binding>
> <binding name="title">
> <literal>Harry Potter and the Half-Blood Prince</literal>
> </binding>
> </result>
> </results>
> </sparql>
>
> Connection closed by foo.example.com
> $
> }}}
>
> It turns out there's only one book in the database in this example.
> (Sample data taken from http://www.sparql.org/). David Reid has some
> code that
> does something not unlike this already [7], implemented as a httpd module,
> using the Redland library [11,12] as its backend store.
>
> == What would you use TripleSoup for? ==
>
> * It could be a backend for piggy bank [8].
>
> * It could be a backend for the next version of wikipedia.
>
> * It could be a backend for an "open" version of iTunes or IMDB.
>
> * It could be the backend for the information management system of the
> Dutch ministry of water management [9].
>
> * It could be the backend for projects.a.o [10] and similar applications.
>
> * Most importantly, it could be a backend for dozens of useful new
> innovative
> projects that no-one has envisioned yet.
>
> == The initial source ==
>
> RDFstore is a standalone RDF storage system implemented as a C library,
> licensed
> under the ASL 1.1. It has perl bindings. Find its distribution at [15].
>
> mod_sparql [7] is an in-development apache module that implements a SPARQL
> endpoint. It is licensed under the Apache License 2.0. It uses redland as a
> backend. The SVN repository can be found at [7].
>
> B is an in-development storage backend for Redland implemented as a
> standalone
> C library. It is currently a closed source codebase. A code snapshot can be
> found at [16].
>
> == The initial committers ==
>
> Dirk-Willem, Ben, Stefano, David and Leo are ASF members who hopefully
> need no
> introduction.
>
> Dave Beckett is the primary author of the Redland RDF application
> framework.
>
> Alberto Reggiori is the primary author of rdfstore, an rdf store
> developed by
> asemantics [13], which will be contributed to TripleSoup. He is a
> partner at
> asemantics.
>
> Andrea Marchesini is the primary author of B, a storage backend for RDF
> developed at Joost [14], which will be contributed to TripleSoup.
>
> All initial committers have experience working on open source projects.
> They
> work for at least 5 different companies.
>
> == TripleSoup as an apache project ==
>
> We think TripleSoup will have to reference dozens of specifications
>> from the
> W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
>> from the
> IETF (HTTP, URL, URI, URN, and more), will make use of or integrate with
> quite
> a few existing open source projects (like the redland RDF libraries as
> well as
> apache apr&httpd). As such, it seems like TripleSoup should fit in
> really well
> at apache.
>
> The responses we got from various members of the RDF and semantic web
> communities so far when discussing this proposal with them have all been
> quite positive, and we expect and hope there'll be quite a few people
> new to apache joining the project soon after it starts.
>
> Most importantly, we think this project will be useful, innovative, and
> fun!
>
> = References =
>
> {{{
> [1] http://incubator.apache.org/
> [2] http://www.w3.org/RDF/
> [3] these are often called "triple stores"
> [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm
> [5] http://www.w3.org/TR/rdf-sparql-query/
> [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> [7] http://david-reid.com/repos/public/mod_sparql/
> [8] http://simile.mit.edu/wiki/Piggy_Bank
> [9] http://www.wadi.nl/uk/
> [10] http://projects.apache.org/
> [11] http://www.librdf.net/
> [12] http://svn.librdf.org/repository/
> [13] http://www.asemantics.com/
> [14] http://www.joost.com/
> [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> [16] http://opensource.joost.com/libb/
> }}}
>
>
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by robert burrell donkin <ro...@gmail.com>.
On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
+1
- robert
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Jukka Zitting <ju...@gmail.com>.
Hi,
On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> Please place your votes!
+1
Even though direct integration with Apache Jackrabbit or some other
Java storage engine doesn't seem immediately applicable, I'm still
interested in seeing what kinds of use cases the project ends up
serving in practice. If it turns out useful, I'd certainly be
interested in doing a parallel Java webapp implementation based on a
JCR content repository. I'll be watching TripleSoup for any lessons to
learn and architectural insights that you'll come up with. Good luck!
:-)
BR,
Jukka Zitting
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[VOTE:Results] TripleSoup - a SPARQL endpoint for httpd
Posted by Leo Simons <ma...@leosimons.com>.
Hi all,
Vote results:
13 +1 binding
2 +1 non-binding
0 +/-0
0 -1
Proposal passes after a minimum of fuzz! Yay!
Noel, can you get Stefano and Ben Hyde added to the incubator PMC so
they can fully fulfill their new mentoring roles?
cheers,
Leo
On Feb 2, 2007, at 9:17 AM, Leo Simons wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
>
> +1 from me.
>
> This vote will run until we have a huge amount of enthousiastic
> +1s, with a sizeable amount of them from the Incubator PMC, and at
> a minimum for 72 hours. If you're not a part of the incubator PMC,
> you're still welcome to express support (or lack of it) for the
> proposal by voting; I will sort out votes when counting. (formal
> voting rules on incubator website)
>
> cheers!
>
> - Leo
>
> ---
> = summary =
>
> TripleSoup is the simplest thing that you can do to turn your apache
> web server into a SPARQL endpoint.
>
> TripleSoup will be an RDF [2] store [3], tooling to work with that
> database, and a REST [4] web interface to talk to that database using
> SPARQL [5], implemented as an apache webserver module.
>
> {{{
> Target: TLP
> Sponsor: Incubator PMC
> Champion: Leo Simons <le...@apache.org>
> Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Leo Simons <le...@apache.org>
> Resources: SVN: https://svn.apache.org/repos/asf/incubator/
> triplesoup/
> Website: http://incubator.apache.org/triplesoup/
> Jira: http://issues.apache.org/jira/browse/TRIPLES
> Wiki: http://wiki.apache.org/triplesoup/
> Mailing lists:
> triplesoup-dev@incubator.apache.org
> triplesoup-commits@incubator.apache.org
> triplesoup-private@incubator.apache.org
> Moderators: leosimons@apache.org
> stefano@apache.org
> dreid@apache.org
> Initial committers:
> Dave Beckett <da...@dajobe.org>, redland author
> Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Andrea Marchesini <ba...@theveniceproject.com>, b store
> author
> Alberto Reggiori <al...@asemantics.com>, rdfstore author
> David Reid <dr...@apache.org>,
> Leo Simons <le...@apache.org>
> Initial source: mod_sparql, commercial triple store,
> existing open source triple store
> Known risks: None
> Technologies: c
> Reference: http://wiki.apache.org/incubator/
> TripleSoupProposal
> }}}
>
> = Proposal details =
>
> == Technology (basics) ==
>
> What is RDF? It is just about any kind of data, represented as
> triples of
> (subject, predicate, object), usually with a rich vocabulary
> describing the
> semantics of the data (with the vocabulary typically also encoded as
> triples).
>
> This data has a representation as RDF/XML as well as using other
> formats such
> as N3, and a query language SPARQL for searching through it. See
> [6] for an
> overview.
>
> So if it is just some data in some format, why does it need a special
> server? Because RDF data is fundamentally not constrained to a
> "file", and
> there often is no "resource identifier" that readily identifies
> something as a
> "document" which can be served up over HTTP.
>
> So why the REST interface? RDF is one of the building blocks
> proposed for the
> "semantic web", and that's why a system that works well with/over
> HTTP is
> needed from the start.
>
> == Technology (concrete) ==
>
> This is just an example. Imagine that there is an application
> "someapp" on
> the host foo.example.com which provides access to information about
> books,
> and you want to get a list of those books (their URIs) and the
> names of the
> books.
>
> {{{
> $ telnet foo.example.com 80
> SELECT /someapp HTTP/1.0
> Host: foo.example.com
> Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-
> query-20060406/
> Accept: application/sparql-results+xml, rdf/xml, rdf/n3
>
> PREFIX books: <http://example.org/book/>
> PREFIX dc: <http://purl.org/dc/elements/1.1/>
> SELECT ?book ?title
> WHERE
> { ?book dc:title ?title }
>
> HTTP/1.0 200 Ok
> Content-Type: application/sparql-results+xml
> Content-Length: 1234
>
> <?xml version="1.0"?>
> <sparql
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> <variable name="book"/>
> <variable name="title"/>
> </head>
> <results ordered="false" distinct="false">
> <result>
> <binding name="book">
> <uri>http://example.org/book/book6</uri>
> </binding>
> <binding name="title">
> <literal>Harry Potter and the Half-Blood Prince</literal>
> </binding>
> </result>
> </results>
> </sparql>
>
> Connection closed by foo.example.com
> $
> }}}
>
> It turns out there's only one book in the database in this example.
> (Sample data taken from http://www.sparql.org/). David Reid has
> some code that
> does something not unlike this already [7], implemented as a httpd
> module,
> using the Redland library [11,12] as its backend store.
>
> == What would you use TripleSoup for? ==
>
> * It could be a backend for piggy bank [8].
>
> * It could be a backend for the next version of wikipedia.
>
> * It could be a backend for an "open" version of iTunes or IMDB.
>
> * It could be the backend for the information management system of the
> Dutch ministry of water management [9].
>
> * It could be the backend for projects.a.o [10] and similar
> applications.
>
> * Most importantly, it could be a backend for dozens of useful new
> innovative
> projects that no-one has envisioned yet.
>
> == The initial source ==
>
> RDFstore is a standalone RDF storage system implemented as a C
> library, licensed
> under the ASL 1.1. It has perl bindings. Find its distribution at
> [15].
>
> mod_sparql [7] is an in-development apache module that implements a
> SPARQL
> endpoint. It is licensed under the Apache License 2.0. It uses
> redland as a
> backend. The SVN repository can be found at [7].
>
> B is an in-development storage backend for Redland implemented as a
> standalone
> C library. It is currently a closed source codebase. A code
> snapshot can be
> found at [16].
>
> == The initial committers ==
>
> Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
> hopefully need no
> introduction.
>
> Dave Beckett is the primary author of the Redland RDF application
> framework.
>
> Alberto Reggiori is the primary author of rdfstore, an rdf store
> developed by
> asemantics [13], which will be contributed to TripleSoup. He is a
> partner at
> asemantics.
>
> Andrea Marchesini is the primary author of B, a storage backend for
> RDF
> developed at Joost [14], which will be contributed to TripleSoup.
>
> All initial committers have experience working on open source
> projects. They
> work for at least 5 different companies.
>
> == TripleSoup as an apache project ==
>
> We think TripleSoup will have to reference dozens of specifications
> from the
> W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
> from the
> IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
> with quite
> a few existing open source projects (like the redland RDF libraries
> as well as
> apache apr&httpd). As such, it seems like TripleSoup should fit in
> really well
> at apache.
>
> The responses we got from various members of the RDF and semantic web
> communities so far when discussing this proposal with them have all
> been
> quite positive, and we expect and hope there'll be quite a few people
> new to apache joining the project soon after it starts.
>
> Most importantly, we think this project will be useful, innovative,
> and
> fun!
>
> = References =
>
> {{{
> [1] http://incubator.apache.org/
> [2] http://www.w3.org/RDF/
> [3] these are often called "triple stores"
> [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/
> rest_arch_style.htm
> [5] http://www.w3.org/TR/rdf-sparql-query/
> [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> [7] http://david-reid.com/repos/public/mod_sparql/
> [8] http://simile.mit.edu/wiki/Piggy_Bank
> [9] http://www.wadi.nl/uk/
> [10] http://projects.apache.org/
> [11] http://www.librdf.net/
> [12] http://svn.librdf.org/repository/
> [13] http://www.asemantics.com/
> [14] http://www.joost.com/
> [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> [16] http://opensource.joost.com/libb/
> }}}
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by "William A. Rowe, Jr." <wr...@rowe-clan.net>.
Leo Simons wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf database
> server project at apache. The entire proposal text is included below.
> There is only one change from the one posted to the [proposal] thread --
> we will start without a triplesoup-users@ mailing list.
+1 here!
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Paul Fremantle <pz...@gmail.com>.
+1
Paul
On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
>
> +1 from me.
>
> This vote will run until we have a huge amount of enthousiastic +1s,
> with a sizeable amount of them from the Incubator PMC, and at a
> minimum for 72 hours. If you're not a part of the incubator PMC,
> you're still welcome to express support (or lack of it) for the
> proposal by voting; I will sort out votes when counting. (formal
> voting rules on incubator website)
>
> cheers!
>
> - Leo
>
> ---
> = summary =
>
> TripleSoup is the simplest thing that you can do to turn your apache
> web server into a SPARQL endpoint.
>
> TripleSoup will be an RDF [2] store [3], tooling to work with that
> database, and a REST [4] web interface to talk to that database using
> SPARQL [5], implemented as an apache webserver module.
>
> {{{
> Target: TLP
> Sponsor: Incubator PMC
> Champion: Leo Simons <le...@apache.org>
> Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Leo Simons <le...@apache.org>
> Resources: SVN: https://svn.apache.org/repos/asf/incubator/
> triplesoup/
> Website: http://incubator.apache.org/triplesoup/
> Jira: http://issues.apache.org/jira/browse/TRIPLES
> Wiki: http://wiki.apache.org/triplesoup/
> Mailing lists:
> triplesoup-dev@incubator.apache.org
> triplesoup-commits@incubator.apache.org
> triplesoup-private@incubator.apache.org
> Moderators: leosimons@apache.org
> stefano@apache.org
> dreid@apache.org
> Initial committers:
> Dave Beckett <da...@dajobe.org>, redland author
> Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Andrea Marchesini <ba...@theveniceproject.com>, b store
> author
> Alberto Reggiori <al...@asemantics.com>, rdfstore author
> David Reid <dr...@apache.org>,
> Leo Simons <le...@apache.org>
> Initial source: mod_sparql, commercial triple store,
> existing open source triple store
> Known risks: None
> Technologies: c
> Reference: http://wiki.apache.org/incubator/TripleSoupProposal
> }}}
>
> = Proposal details =
>
> == Technology (basics) ==
>
> What is RDF? It is just about any kind of data, represented as
> triples of
> (subject, predicate, object), usually with a rich vocabulary
> describing the
> semantics of the data (with the vocabulary typically also encoded as
> triples).
>
> This data has a representation as RDF/XML as well as using other
> formats such
> as N3, and a query language SPARQL for searching through it. See [6]
> for an
> overview.
>
> So if it is just some data in some format, why does it need a special
> server? Because RDF data is fundamentally not constrained to a
> "file", and
> there often is no "resource identifier" that readily identifies
> something as a
> "document" which can be served up over HTTP.
>
> So why the REST interface? RDF is one of the building blocks proposed
> for the
> "semantic web", and that's why a system that works well with/over
> HTTP is
> needed from the start.
>
> == Technology (concrete) ==
>
> This is just an example. Imagine that there is an application
> "someapp" on
> the host foo.example.com which provides access to information about
> books,
> and you want to get a list of those books (their URIs) and the names
> of the
> books.
>
> {{{
> $ telnet foo.example.com 80
> SELECT /someapp HTTP/1.0
> Host: foo.example.com
> Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-query-20060406/
> Accept: application/sparql-results+xml, rdf/xml, rdf/n3
>
> PREFIX books: <http://example.org/book/>
> PREFIX dc: <http://purl.org/dc/elements/1.1/>
> SELECT ?book ?title
> WHERE
> { ?book dc:title ?title }
>
> HTTP/1.0 200 Ok
> Content-Type: application/sparql-results+xml
> Content-Length: 1234
>
> <?xml version="1.0"?>
> <sparql
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> <variable name="book"/>
> <variable name="title"/>
> </head>
> <results ordered="false" distinct="false">
> <result>
> <binding name="book">
> <uri>http://example.org/book/book6</uri>
> </binding>
> <binding name="title">
> <literal>Harry Potter and the Half-Blood Prince</literal>
> </binding>
> </result>
> </results>
> </sparql>
>
> Connection closed by foo.example.com
> $
> }}}
>
> It turns out there's only one book in the database in this example.
> (Sample data taken from http://www.sparql.org/). David Reid has some
> code that
> does something not unlike this already [7], implemented as a httpd
> module,
> using the Redland library [11,12] as its backend store.
>
> == What would you use TripleSoup for? ==
>
> * It could be a backend for piggy bank [8].
>
> * It could be a backend for the next version of wikipedia.
>
> * It could be a backend for an "open" version of iTunes or IMDB.
>
> * It could be the backend for the information management system of the
> Dutch ministry of water management [9].
>
> * It could be the backend for projects.a.o [10] and similar
> applications.
>
> * Most importantly, it could be a backend for dozens of useful new
> innovative
> projects that no-one has envisioned yet.
>
> == The initial source ==
>
> RDFstore is a standalone RDF storage system implemented as a C
> library, licensed
> under the ASL 1.1. It has perl bindings. Find its distribution at [15].
>
> mod_sparql [7] is an in-development apache module that implements a
> SPARQL
> endpoint. It is licensed under the Apache License 2.0. It uses
> redland as a
> backend. The SVN repository can be found at [7].
>
> B is an in-development storage backend for Redland implemented as a
> standalone
> C library. It is currently a closed source codebase. A code snapshot
> can be
> found at [16].
>
> == The initial committers ==
>
> Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
> hopefully need no
> introduction.
>
> Dave Beckett is the primary author of the Redland RDF application
> framework.
>
> Alberto Reggiori is the primary author of rdfstore, an rdf store
> developed by
> asemantics [13], which will be contributed to TripleSoup. He is a
> partner at
> asemantics.
>
> Andrea Marchesini is the primary author of B, a storage backend for RDF
> developed at Joost [14], which will be contributed to TripleSoup.
>
> All initial committers have experience working on open source
> projects. They
> work for at least 5 different companies.
>
> == TripleSoup as an apache project ==
>
> We think TripleSoup will have to reference dozens of specifications
> from the
> W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
> from the
> IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
> with quite
> a few existing open source projects (like the redland RDF libraries
> as well as
> apache apr&httpd). As such, it seems like TripleSoup should fit in
> really well
> at apache.
>
> The responses we got from various members of the RDF and semantic web
> communities so far when discussing this proposal with them have all been
> quite positive, and we expect and hope there'll be quite a few people
> new to apache joining the project soon after it starts.
>
> Most importantly, we think this project will be useful, innovative, and
> fun!
>
> = References =
>
> {{{
> [1] http://incubator.apache.org/
> [2] http://www.w3.org/RDF/
> [3] these are often called "triple stores"
> [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/
> rest_arch_style.htm
> [5] http://www.w3.org/TR/rdf-sparql-query/
> [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> [7] http://david-reid.com/repos/public/mod_sparql/
> [8] http://simile.mit.edu/wiki/Piggy_Bank
> [9] http://www.wadi.nl/uk/
> [10] http://projects.apache.org/
> [11] http://www.librdf.net/
> [12] http://svn.librdf.org/repository/
> [13] http://www.asemantics.com/
> [14] http://www.joost.com/
> [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> [16] http://opensource.joost.com/libb/
> }}}
>
>
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> To unsubscribe, e-mail: general-unsubscribe@incubator.apache.org
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>
>
--
Paul Fremantle
VP/Technology, WSO2 and OASIS WS-RX TC Co-chair
http://bloglines.com/blog/paulfremantle
paul@wso2.com
"Oxygenating the Web Service Platform", www.wso2.com
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Garrett Rooney <ro...@electricjellyfish.net>.
On 2/2/07, Leo Simons <ma...@leosimons.com> wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
+1
-garrett
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by J Aaron Farr <fa...@apache.org>.
Leo Simons <ma...@leosimons.com> writes:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
+1
--
jaaron
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Re: [VOTE] TripleSoup - a SPARQL endpoint for httpd
Posted by Ted Leung <tw...@sauria.com>.
+1
On Feb 2, 2007, at 12:17 AM, Leo Simons wrote:
> Hi all,
>
> This is a vote on a previously posted proposal to start a rdf
> database server project at apache. The entire proposal text is
> included below. There is only one change from the one posted to the
> [proposal] thread -- we will start without a triplesoup-users@
> mailing list.
>
> Please place your votes!
>
> +1 from me.
>
> This vote will run until we have a huge amount of enthousiastic
> +1s, with a sizeable amount of them from the Incubator PMC, and at
> a minimum for 72 hours. If you're not a part of the incubator PMC,
> you're still welcome to express support (or lack of it) for the
> proposal by voting; I will sort out votes when counting. (formal
> voting rules on incubator website)
>
> cheers!
>
> - Leo
>
> ---
> = summary =
>
> TripleSoup is the simplest thing that you can do to turn your apache
> web server into a SPARQL endpoint.
>
> TripleSoup will be an RDF [2] store [3], tooling to work with that
> database, and a REST [4] web interface to talk to that database using
> SPARQL [5], implemented as an apache webserver module.
>
> {{{
> Target: TLP
> Sponsor: Incubator PMC
> Champion: Leo Simons <le...@apache.org>
> Mentors: Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Leo Simons <le...@apache.org>
> Resources: SVN: https://svn.apache.org/repos/asf/incubator/
> triplesoup/
> Website: http://incubator.apache.org/triplesoup/
> Jira: http://issues.apache.org/jira/browse/TRIPLES
> Wiki: http://wiki.apache.org/triplesoup/
> Mailing lists:
> triplesoup-dev@incubator.apache.org
> triplesoup-commits@incubator.apache.org
> triplesoup-private@incubator.apache.org
> Moderators: leosimons@apache.org
> stefano@apache.org
> dreid@apache.org
> Initial committers:
> Dave Beckett <da...@dajobe.org>, redland author
> Dirk-Willem van Gulik <di...@apache.org>,
> Ben Hyde <bh...@apache.org>,
> Stefano Mazzocchi <st...@apache.org>,
> Andrea Marchesini <ba...@theveniceproject.com>, b store
> author
> Alberto Reggiori <al...@asemantics.com>, rdfstore author
> David Reid <dr...@apache.org>,
> Leo Simons <le...@apache.org>
> Initial source: mod_sparql, commercial triple store,
> existing open source triple store
> Known risks: None
> Technologies: c
> Reference: http://wiki.apache.org/incubator/
> TripleSoupProposal
> }}}
>
> = Proposal details =
>
> == Technology (basics) ==
>
> What is RDF? It is just about any kind of data, represented as
> triples of
> (subject, predicate, object), usually with a rich vocabulary
> describing the
> semantics of the data (with the vocabulary typically also encoded as
> triples).
>
> This data has a representation as RDF/XML as well as using other
> formats such
> as N3, and a query language SPARQL for searching through it. See
> [6] for an
> overview.
>
> So if it is just some data in some format, why does it need a special
> server? Because RDF data is fundamentally not constrained to a
> "file", and
> there often is no "resource identifier" that readily identifies
> something as a
> "document" which can be served up over HTTP.
>
> So why the REST interface? RDF is one of the building blocks
> proposed for the
> "semantic web", and that's why a system that works well with/over
> HTTP is
> needed from the start.
>
> == Technology (concrete) ==
>
> This is just an example. Imagine that there is an application
> "someapp" on
> the host foo.example.com which provides access to information about
> books,
> and you want to get a list of those books (their URIs) and the
> names of the
> books.
>
> {{{
> $ telnet foo.example.com 80
> SELECT /someapp HTTP/1.0
> Host: foo.example.com
> Query-Language: http://www.w3.org/TR/2006/CR-rdf-sparql-
> query-20060406/
> Accept: application/sparql-results+xml, rdf/xml, rdf/n3
>
> PREFIX books: <http://example.org/book/>
> PREFIX dc: <http://purl.org/dc/elements/1.1/>
> SELECT ?book ?title
> WHERE
> { ?book dc:title ?title }
>
> HTTP/1.0 200 Ok
> Content-Type: application/sparql-results+xml
> Content-Length: 1234
>
> <?xml version="1.0"?>
> <sparql
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:xs="http://www.w3.org/2001/XMLSchema#"
> xmlns="http://www.w3.org/2005/sparql-results#">
> <head>
> <variable name="book"/>
> <variable name="title"/>
> </head>
> <results ordered="false" distinct="false">
> <result>
> <binding name="book">
> <uri>http://example.org/book/book6</uri>
> </binding>
> <binding name="title">
> <literal>Harry Potter and the Half-Blood Prince</literal>
> </binding>
> </result>
> </results>
> </sparql>
>
> Connection closed by foo.example.com
> $
> }}}
>
> It turns out there's only one book in the database in this example.
> (Sample data taken from http://www.sparql.org/). David Reid has
> some code that
> does something not unlike this already [7], implemented as a httpd
> module,
> using the Redland library [11,12] as its backend store.
>
> == What would you use TripleSoup for? ==
>
> * It could be a backend for piggy bank [8].
>
> * It could be a backend for the next version of wikipedia.
>
> * It could be a backend for an "open" version of iTunes or IMDB.
>
> * It could be the backend for the information management system of the
> Dutch ministry of water management [9].
>
> * It could be the backend for projects.a.o [10] and similar
> applications.
>
> * Most importantly, it could be a backend for dozens of useful new
> innovative
> projects that no-one has envisioned yet.
>
> == The initial source ==
>
> RDFstore is a standalone RDF storage system implemented as a C
> library, licensed
> under the ASL 1.1. It has perl bindings. Find its distribution at
> [15].
>
> mod_sparql [7] is an in-development apache module that implements a
> SPARQL
> endpoint. It is licensed under the Apache License 2.0. It uses
> redland as a
> backend. The SVN repository can be found at [7].
>
> B is an in-development storage backend for Redland implemented as a
> standalone
> C library. It is currently a closed source codebase. A code
> snapshot can be
> found at [16].
>
> == The initial committers ==
>
> Dirk-Willem, Ben, Stefano, David and Leo are ASF members who
> hopefully need no
> introduction.
>
> Dave Beckett is the primary author of the Redland RDF application
> framework.
>
> Alberto Reggiori is the primary author of rdfstore, an rdf store
> developed by
> asemantics [13], which will be contributed to TripleSoup. He is a
> partner at
> asemantics.
>
> Andrea Marchesini is the primary author of B, a storage backend for
> RDF
> developed at Joost [14], which will be contributed to TripleSoup.
>
> All initial committers have experience working on open source
> projects. They
> work for at least 5 different companies.
>
> == TripleSoup as an apache project ==
>
> We think TripleSoup will have to reference dozens of specifications
> from the
> W3C (XML, RDF, OWL, SPARQL, their standards for URIs, and more) and
> from the
> IETF (HTTP, URL, URI, URN, and more), will make use of or integrate
> with quite
> a few existing open source projects (like the redland RDF libraries
> as well as
> apache apr&httpd). As such, it seems like TripleSoup should fit in
> really well
> at apache.
>
> The responses we got from various members of the RDF and semantic web
> communities so far when discussing this proposal with them have all
> been
> quite positive, and we expect and hope there'll be quite a few people
> new to apache joining the project soon after it starts.
>
> Most importantly, we think this project will be useful, innovative,
> and
> fun!
>
> = References =
>
> {{{
> [1] http://incubator.apache.org/
> [2] http://www.w3.org/RDF/
> [3] these are often called "triple stores"
> [4] http://www.ics.uci.edu/~fielding/pubs/dissertation/
> rest_arch_style.htm
> [5] http://www.w3.org/TR/rdf-sparql-query/
> [6] http://www.betaversion.org/~stefano/papers/ac2006.1.pdf
> [7] http://david-reid.com/repos/public/mod_sparql/
> [8] http://simile.mit.edu/wiki/Piggy_Bank
> [9] http://www.wadi.nl/uk/
> [10] http://projects.apache.org/
> [11] http://www.librdf.net/
> [12] http://svn.librdf.org/repository/
> [13] http://www.asemantics.com/
> [14] http://www.joost.com/
> [15] http://rdfstore.sourceforge.net/downloads/RDFStore-0.51.tar.gz
> [16] http://opensource.joost.com/libb/
> }}}
>
>
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