RDF-LDF-0.23 000755 000765 000024 0 13104333613 12550 5 ustar 00hochsten staff 000000 000000 README 100644 000765 000024 4506 13104333613 13516 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 NAME
RDF::LDF - Linked Data Fragments client
SYNOPSIS
use RDF::Trine::Store::LDF;
use RDF::Trine::Store;
# To use a HTTP cache:
use LWP::UserAgent::CHICaching;
my $cache = CHI->new( driver => 'Memory', global => 1 );
my $ua = LWP::UserAgent::CHICaching->new(cache => $cache);
RDF::Trine->default_useragent($ua);
my $store = RDF::Trine::Store->new_with_config({
storetype => 'LDF',
url => $url
});
my $it = $store->get_statements();
while (my $st = $it->next) {
# $st is a RDF::Trine::Statement
print "$st\n";
}
# Or the low level modules themselves
use RDF::LDF;
my $client = RDF::LDF->new(url => 'http://fragments.dbpedia.org/2014/en');
my $iterator = $client->get_statements($subject, $predicate, $object);
while (my $statement = $iterator->()) {
# $model is a RDF::Trine::Statement
}
DESCRIPTION
RDF::LDF implements a basic Linked Data Fragment
client.
This a low level module to implement the Linked Data Fragment protocol.
You probably want to use RDF::Trine::Store::LDF.
CONFIGURATION
url
URL to retrieve RDF from.
Experimental: more than one URL can be provided for federated search
over many LDF endpoints.
my $store = RDF::Trine::Store->new_with_config({
storetype => 'LDF',
url => [ $url1, $url2, $url3 ]
});
# or
my $client = RDF::LDF->new(url => [ $url1, $url2, $url3 ]);
METHODS
get_statements( $subject, $predicate, $object )
Return an iterator for every RDF::Trine::Statement served by the LDF
server.
get_pattern( $bgp );
Returns a stream object of all bindings matching the specified graph
pattern.
CONTRIBUTORS
Patrick Hochstenbach, patrick.hochstenbach at ugent.be
Gregory Todd Williams, greg@evilfunhouse.com
Jacob Voss, voss@gbv.de
COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by Patrick Hochstenbach.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
Changes 100644 000765 000024 4426 13104333613 14132 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 Revision history for RDF::LDF
0.23 2017-05-09 14:35:20 CEST
- Fixing changing state of global RDF::Trine useragent bug
0.22 2016-05-12 16:24:47 CEST
- Fixing stale hydra statements which end up in result set
0.21 2016-04-04 10:52:38 CEST
- Better handling of accept headers
0.20 2016-04-04 10:50:12 CEST
- Better handling of accept headers
0.19 2016-03-31 20:47:34 CEST
- Update page predicates to latest Hydra spec which breaks existing LDF clients
0.18 2016-03-16 11:46:48 CET
- Removing the caching component into a separate module
0.17 2016-02-22 10:36:32 CET
- Removing Data::Util dependency
0.16 2015-12-10 09:38:40 CET
- Fix missing JSON-LD support bug
0.15 2015-06-24 16:04:14 CEST
- Provide better UTF8 tests and updated the documentation
- Add support for federated queries
0.14 2015-05-27 11:37:24 CEST
- Make LDF parser more forgiving for UTF-8 errors in the http response
0.13 2015-05-27 09:27:30 CEST
- Fixing utf8 problem
0.12 2015-05-22 09:54:00 CEST
- Requiring minimal RDF::NS for the REVERSE method
0.11 2015-05-22 09:32:21 CEST
- Downgrading Perl dependencies
0.10 2015-05-21 10:18:52 CEST
- Deleting some dependencies
0.09 2015-05-06 13:03:50 CEST
- Minor fixed in build scripts
0.08 2015-04-24 09:53:02 CEST
- Fixing command line creating JSON as output
0.07 2015-03-18 11:09:23 CET
- Fixing missing Throwable
- Fixing UTF-8 security bug in File::Slurp
0.06 2015-03-16 13:10:10 CET
- Update requirements for HTTP::Message
- Fixing Error and Moo conflict
0.05 2015-02-26 21:35:38 CET
- adding better error handling
- Catmandu::Error->throw is called but not loaded
- use RDF::Trine::Parser to load URL contents into a model
- use URI::Template in constructing fragment URLs
- Improved use of RDF::Trine user agent and added mocked network tests
- Enabled more get_pattern tests
- Network test are optional with RDFLDF_NETWORK_TESTS=1
0.04 2015-02-23 16:38:51 CET
- fixing the non-zero results bug
- adding example sparql for testing
0.03 2015-02-23 15:09:04 CET
- adding RDF::Trine::Store support
- adding a ldf-client.pl command line client
- provide example sparql queries
0.02 2015-02-19 20:24:24 CET
- adding required modules in cpanfile
0.01 2015-02-19 10:48:34 CET
- initial release
LICENSE 100644 000765 000024 43705 13104333613 13667 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 This software is copyright (c) 2015 by Patrick Hochstenbach.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
Terms of the Perl programming language system itself
a) the GNU General Public License as published by the Free
Software Foundation; either version 1, or (at your option) any
later version, or
b) the "Artistic License"
--- The GNU General Public License, Version 1, February 1989 ---
This software is Copyright (c) 2015 by Patrick Hochstenbach.
This is free software, licensed under:
The GNU General Public License, Version 1, February 1989
GNU GENERAL PUBLIC LICENSE
Version 1, February 1989
Copyright (C) 1989 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The license agreements of most software companies try to keep users
at the mercy of those companies. By contrast, our General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. The
General Public License applies to the Free Software Foundation's
software and to any other program whose authors commit to using it.
You can use it for your programs, too.
When we speak of free software, we are referring to freedom, not
price. Specifically, the General Public License is designed to make
sure that you have the freedom to give away or sell copies of free
software, that you receive source code or can get it if you want it,
that you can change the software or use pieces of it in new free
programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of a such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must tell them their rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License Agreement applies to any program or other work which
contains a notice placed by the copyright holder saying it may be
distributed under the terms of this General Public License. The
"Program", below, refers to any such program or work, and a "work based
on the Program" means either the Program or any work containing the
Program or a portion of it, either verbatim or with modifications. Each
licensee is addressed as "you".
1. You may copy and distribute verbatim copies of the Program's source
code as you receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this
General Public License and to the absence of any warranty; and give any
other recipients of the Program a copy of this General Public License
along with the Program. You may charge a fee for the physical act of
transferring a copy.
2. You may modify your copy or copies of the Program or any portion of
it, and copy and distribute such modifications under the terms of Paragraph
1 above, provided that you also do the following:
a) cause the modified files to carry prominent notices stating that
you changed the files and the date of any change; and
b) cause the whole of any work that you distribute or publish, that
in whole or in part contains the Program or any part thereof, either
with or without modifications, to be licensed at no charge to all
third parties under the terms of this General Public License (except
that you may choose to grant warranty protection to some or all
third parties, at your option).
c) If the modified program normally reads commands interactively when
run, you must cause it, when started running for such interactive use
in the simplest and most usual way, to print or display an
announcement including an appropriate copyright notice and a notice
that there is no warranty (or else, saying that you provide a
warranty) and that users may redistribute the program under these
conditions, and telling the user how to view a copy of this General
Public License.
d) You may charge a fee for the physical act of transferring a
copy, and you may at your option offer warranty protection in
exchange for a fee.
Mere aggregation of another independent work with the Program (or its
derivative) on a volume of a storage or distribution medium does not bring
the other work under the scope of these terms.
3. You may copy and distribute the Program (or a portion or derivative of
it, under Paragraph 2) in object code or executable form under the terms of
Paragraphs 1 and 2 above provided that you also do one of the following:
a) accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of
Paragraphs 1 and 2 above; or,
b) accompany it with a written offer, valid for at least three
years, to give any third party free (except for a nominal charge
for the cost of distribution) a complete machine-readable copy of the
corresponding source code, to be distributed under the terms of
Paragraphs 1 and 2 above; or,
c) accompany it with the information you received as to where the
corresponding source code may be obtained. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form alone.)
Source code for a work means the preferred form of the work for making
modifications to it. For an executable file, complete source code means
all the source code for all modules it contains; but, as a special
exception, it need not include source code for modules which are standard
libraries that accompany the operating system on which the executable
file runs, or for standard header files or definitions files that
accompany that operating system.
4. You may not copy, modify, sublicense, distribute or transfer the
Program except as expressly provided under this General Public License.
Any attempt otherwise to copy, modify, sublicense, distribute or transfer
the Program is void, and will automatically terminate your rights to use
the Program under this License. However, parties who have received
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License will not have their licenses terminated so long as such parties
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5. By copying, distributing or modifying the Program (or any work based
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and all its terms and conditions.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the original
licensor to copy, distribute or modify the Program subject to these
terms and conditions. You may not impose any further restrictions on the
recipients' exercise of the rights granted herein.
7. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
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later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
the license, you may choose any version ever published by the Free Software
Foundation.
8. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
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FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to humanity, the best way to achieve this is to make it
free software which everyone can redistribute and change under these
terms.
To do so, attach the following notices to the program. It is safest to
attach them to the start of each source file to most effectively convey
the exclusion of warranty; and each file should have at least the
"copyright" line and a pointer to where the full notice is found.
Copyright (C) 19yy
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) 19xx name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the
appropriate parts of the General Public License. Of course, the
commands you use may be called something other than `show w' and `show
c'; they could even be mouse-clicks or menu items--whatever suits your
program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
program `Gnomovision' (a program to direct compilers to make passes
at assemblers) written by James Hacker.
, 1 April 1989
Ty Coon, President of Vice
That's all there is to it!
--- The Artistic License 1.0 ---
This software is Copyright (c) 2015 by Patrick Hochstenbach.
This is free software, licensed under:
The Artistic License 1.0
The Artistic License
Preamble
The intent of this document is to state the conditions under which a Package
may be copied, such that the Copyright Holder maintains some semblance of
artistic control over the development of the package, while giving the users of
the package the right to use and distribute the Package in a more-or-less
customary fashion, plus the right to make reasonable modifications.
Definitions:
- "Package" refers to the collection of files distributed by the Copyright
Holder, and derivatives of that collection of files created through
textual modification.
- "Standard Version" refers to such a Package if it has not been modified,
or has been modified in accordance with the wishes of the Copyright
Holder.
- "Copyright Holder" is whoever is named in the copyright or copyrights for
the package.
- "You" is you, if you're thinking about copying or distributing this Package.
- "Reasonable copying fee" is whatever you can justify on the basis of media
cost, duplication charges, time of people involved, and so on. (You will
not be required to justify it to the Copyright Holder, but only to the
computing community at large as a market that must bear the fee.)
- "Freely Available" means that no fee is charged for the item itself, though
there may be fees involved in handling the item. It also means that
recipients of the item may redistribute it under the same conditions they
received it.
1. You may make and give away verbatim copies of the source form of the
Standard Version of this Package without restriction, provided that you
duplicate all of the original copyright notices and associated disclaimers.
2. You may apply bug fixes, portability fixes and other modifications derived
from the Public Domain or from the Copyright Holder. A Package modified in such
a way shall still be considered the Standard Version.
3. You may otherwise modify your copy of this Package in any way, provided that
you insert a prominent notice in each changed file stating how and when you
changed that file, and provided that you do at least ONE of the following:
a) place your modifications in the Public Domain or otherwise make them
Freely Available, such as by posting said modifications to Usenet or an
equivalent medium, or placing the modifications on a major archive site
such as ftp.uu.net, or by allowing the Copyright Holder to include your
modifications in the Standard Version of the Package.
b) use the modified Package only within your corporation or organization.
c) rename any non-standard executables so the names do not conflict with
standard executables, which must also be provided, and provide a separate
manual page for each non-standard executable that clearly documents how it
differs from the Standard Version.
d) make other distribution arrangements with the Copyright Holder.
4. You may distribute the programs of this Package in object code or executable
form, provided that you do at least ONE of the following:
a) distribute a Standard Version of the executables and library files,
together with instructions (in the manual page or equivalent) on where to
get the Standard Version.
b) accompany the distribution with the machine-readable source of the Package
with your modifications.
c) accompany any non-standard executables with their corresponding Standard
Version executables, giving the non-standard executables non-standard
names, and clearly documenting the differences in manual pages (or
equivalent), together with instructions on where to get the Standard
Version.
d) make other distribution arrangements with the Copyright Holder.
5. You may charge a reasonable copying fee for any distribution of this
Package. You may charge any fee you choose for support of this Package. You
may not charge a fee for this Package itself. However, you may distribute this
Package in aggregate with other (possibly commercial) programs as part of a
larger (possibly commercial) software distribution provided that you do not
advertise this Package as a product of your own.
6. The scripts and library files supplied as input to or produced as output
from the programs of this Package do not automatically fall under the copyright
of this Package, but belong to whomever generated them, and may be sold
commercially, and may be aggregated with this Package.
7. C or perl subroutines supplied by you and linked into this Package shall not
be considered part of this Package.
8. The name of the Copyright Holder may not be used to endorse or promote
products derived from this software without specific prior written permission.
9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The End
cpanfile 100644 000765 000024 1376 13104333613 14344 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 requires 'perl', 'v5.10.1';
on 'test', sub {
requires 'Test::Deep', 0;
requires 'Test::Exception', 0;
requires 'Test::More', '0';
requires 'Test::Pod', 0;
requires 'Test::LWP::UserAgent', 0;
requires 'Encode', 0;
};
requires 'Cache::LRU', 0;
requires 'Clone', 0;
requires 'Data::Compare', 0;
requires 'Getopt::Long', 0;
requires 'HTTP::Message', 0;
requires 'JSON', 0;
requires 'Log::Any', 0;
requires 'Moo', 0;
requires 'RDF::NS', '20150725';
requires 'RDF::Query', 0;
requires 'RDF::Trine', 0;
requires 'Throwable', 0;
requires 'URI::Escape', 0;
requires 'URI::Template', 0;
requires 'LWP::UserAgent::CHICaching', 0;
recommends 'Log::Any', '1.00';
recommends 'Moo', '1.004006';
recommends 'RDF::Query', '2.913';
recommends 'RDF::Trine', '1.013';
Build.PL 100644 000765 000024 254 13104333613 14106 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 # This Build.PL for RDF-LDF was generated by Dist::Zilla::Plugin::ModuleBuildTiny 0.015.
use strict;
use warnings;
use v5.10.1;
use Module::Build::Tiny 0.034;
Build_PL();
META.yml 100644 000765 000024 2703 13104333613 14104 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 ---
abstract: 'Linked Data Fragments client'
author:
- 'Patrick Hochstenbach'
build_requires:
Encode: '0'
Test::Deep: '0'
Test::Exception: '0'
Test::LWP::UserAgent: '0'
Test::More: '0'
Test::Pod: '0'
configure_requires:
Module::Build::Tiny: '0.034'
dynamic_config: 0
generated_by: 'Dist::Milla version v1.0.17, Dist::Zilla version 6.008, CPAN::Meta::Converter version 2.150005'
license: perl
meta-spec:
url: http://module-build.sourceforge.net/META-spec-v1.4.html
version: '1.4'
name: RDF-LDF
no_index:
directory:
- eg
- examples
- inc
- share
- t
- xt
recommends:
Log::Any: '1.00'
Moo: '1.004006'
RDF::Query: '2.913'
RDF::Trine: '1.013'
requires:
Cache::LRU: '0'
Clone: '0'
Data::Compare: '0'
Getopt::Long: '0'
HTTP::Message: '0'
JSON: '0'
LWP::UserAgent::CHICaching: '0'
Log::Any: '0'
Moo: '0'
RDF::NS: '20150725'
RDF::Query: '0'
RDF::Trine: '0'
Throwable: '0'
URI::Escape: '0'
URI::Template: '0'
perl: v5.10.1
resources:
bugtracker: https://github.com/phochste/RDF-LDF/issues
homepage: https://github.com/phochste/RDF-LDF
repository: https://github.com/phochste/RDF-LDF.git
version: '0.23'
x_contributors:
- 'Gregory Todd Williams '
- 'Jakob Voß '
- 'Jakob Voss '
- 'Kjetil Kjernsmo '
- 'Patrick Hochstenbach '
x_serialization_backend: 'YAML::Tiny version 1.69'
MANIFEST 100644 000765 000024 1005 13104333613 13756 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 # This file was automatically generated by Dist::Zilla::Plugin::Manifest v6.008.
Build.PL
Changes
LICENSE
MANIFEST
MANIFEST.SKIP
META.json
META.yml
README
bin/ldf-client.pl
cpanfile
demo/sparql01.txt
demo/sparql02.txt
demo/sparql03.txt
demo/sparql04.txt
demo/sparql05.txt
demo/sparql06.txt
demo/sparql07.txt
demo/sparql08.txt
demo/sparql09.txt
lib/RDF/LDF.pm
lib/RDF/LDF/Error.pm
lib/RDF/Trine/Store/LDF.pm
t/LDF-pattern-federated.t
t/LDF-pattern.t
t/RDF-LDF.t
t/RDF-Trine-Store-LDF.t
t/author-pod-syntax.t
t/basic.t
t 000755 000765 000024 0 13104333613 12734 5 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 basic.t 100644 000765 000024 250 13104333613 14317 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/t use strict;
use warnings;
use Test::More;
use Test::Exception;
use JSON ();
my $pkg;
BEGIN {
$pkg = 'RDF::LDF';
use_ok $pkg;
}
require_ok $pkg;
done_testing;
META.json 100644 000765 000024 5047 13104333613 14260 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 {
"abstract" : "Linked Data Fragments client",
"author" : [
"Patrick Hochstenbach"
],
"dynamic_config" : 0,
"generated_by" : "Dist::Milla version v1.0.17, Dist::Zilla version 6.008, CPAN::Meta::Converter version 2.150005",
"license" : [
"perl_5"
],
"meta-spec" : {
"url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec",
"version" : 2
},
"name" : "RDF-LDF",
"no_index" : {
"directory" : [
"eg",
"examples",
"inc",
"share",
"t",
"xt"
]
},
"prereqs" : {
"configure" : {
"requires" : {
"Module::Build::Tiny" : "0.034"
}
},
"develop" : {
"requires" : {
"Dist::Milla" : "v1.0.17",
"Test::Pod" : "1.41"
}
},
"runtime" : {
"recommends" : {
"Log::Any" : "1.00",
"Moo" : "1.004006",
"RDF::Query" : "2.913",
"RDF::Trine" : "1.013"
},
"requires" : {
"Cache::LRU" : "0",
"Clone" : "0",
"Data::Compare" : "0",
"Getopt::Long" : "0",
"HTTP::Message" : "0",
"JSON" : "0",
"LWP::UserAgent::CHICaching" : "0",
"Log::Any" : "0",
"Moo" : "0",
"RDF::NS" : "20150725",
"RDF::Query" : "0",
"RDF::Trine" : "0",
"Throwable" : "0",
"URI::Escape" : "0",
"URI::Template" : "0",
"perl" : "v5.10.1"
}
},
"test" : {
"requires" : {
"Encode" : "0",
"Test::Deep" : "0",
"Test::Exception" : "0",
"Test::LWP::UserAgent" : "0",
"Test::More" : "0",
"Test::Pod" : "0"
}
}
},
"release_status" : "stable",
"resources" : {
"bugtracker" : {
"web" : "https://github.com/phochste/RDF-LDF/issues"
},
"homepage" : "https://github.com/phochste/RDF-LDF",
"repository" : {
"type" : "git",
"url" : "https://github.com/phochste/RDF-LDF.git",
"web" : "https://github.com/phochste/RDF-LDF"
}
},
"version" : "0.23",
"x_contributors" : [
"Gregory Todd Williams ",
"Jakob Vo\u00df ",
"Jakob Voss ",
"Kjetil Kjernsmo ",
"Patrick Hochstenbach "
],
"x_serialization_backend" : "Cpanel::JSON::XS version 3.0233"
}
RDF-LDF.t 100644 000765 000024 6050 13104333613 14300 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/t use open ':std', ':encoding(utf8)';
use strict;
use warnings;
use Test::More;
use Test::Exception;
use RDF::LDF;
use Test::LWP::UserAgent;
RDF::Trine->default_useragent(user_agent());
my $client = RDF::LDF->new(url => 'http://fragments.dbpedia.org/2014/en');
ok $client , 'got a client to http://fragments.dbpedia.org/2014/en';
ok $client->is_fragment_server , 'this server is a ldf server';
my $it = $client->get_statements();
ok $it , 'got an iterator on the compelete database';
my $triple = $it->();
ok $triple , 'got a triple';
isa_ok $triple , 'RDF::Trine::Statement' , 'triple is an RDF::Trine::Statement';
my ($triple2,$info) = $it->();
ok $info , 'got ldf metadata';
ok $info->{void_triples} , 'got lotsa triples';
throws_ok { $client->get_pattern() } 'RDF::LDF::Error' , 'throws on empty pattern';
done_testing;
sub user_agent {
my $DBPEDIA_FRAGMENT = <<'END';
@prefix rdf: .
@prefix skos: .
@prefix dc: .
@prefix hydra: .
@prefix void: .
@prefix dc11: .
@prefix foaf: .
dc11:rights ;
foaf:thumbnail .
hydra:member .
dc:description "Triple Pattern Fragment of the 'DBpedia 2014' dataset containing triples matching the pattern { ?s ?p ?o }."@en ;
dc:source ;
dc:title "Linked Data Fragment of DBpedia 2014"@en ;
void:subset ;
void:triples 367999560 ;
a hydra:Collection, hydra:PagedCollection ;
hydra:first ;
hydra:itemsPerPage 100 ;
hydra:next ;
hydra:totalItems 367999560 .
void:subset ;
void:uriLookupEndpoint "http://fragments.dbpedia.org/2014/en{?subject,predicate,object}" ;
a void:Dataset, hydra:Collection ;
hydra:search [
hydra:mapping [
hydra:property rdf:object ;
hydra:variable "object"
], [
hydra:property rdf:predicate ;
hydra:variable "predicate"
], [
hydra:property rdf:subject ;
hydra:variable "subject"
] ;
hydra:template "http://fragments.dbpedia.org/2014/en{?subject,predicate,object}"
] .
END
my $ua = Test::LWP::UserAgent->new( agent => "RDF:::LDF/$RDF::LDF::VERSION" );
$ua->map_response(
qr{http://fragments.dbpedia.org/2014/en},
HTTP::Response->new('200', 'OK', ['Content-Type' => 'text/plain'], $DBPEDIA_FRAGMENT));
return $ua;
}
MANIFEST.SKIP 100644 000765 000024 11 13104333613 14457 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 dist.ini
RDF 000755 000765 000024 0 13104333613 13652 5 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/lib LDF.pm 100644 000765 000024 45345 13104333613 15010 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/lib/RDF package RDF::LDF;
use strict;
use warnings;
use feature qw(state);
use utf8;
use Moo;
use Data::Compare;
use RDF::NS;
use RDF::Trine;
use RDF::Query;
use URI::Escape;
use LWP::UserAgent;
use HTTP::Request::Common;
use Log::Any ();
use Cache::LRU;
use Clone qw(clone);
use JSON;
use URI::Template;
use RDF::LDF::Error;
our $VERSION = '0.23';
has url => (
is => 'ro' ,
required => 1
);
has sn => (
is => 'ro' ,
lazy => 1,
builder => sub {
RDF::NS->new->REVERSE;
}
);
has lru => (
is => 'ro' ,
lazy => 1,
builder => sub {
Cache::LRU->new( size => 100 );
}
);
has log => (
is => 'ro',
lazy => 1,
builder => sub {
Log::Any->get_logger(category => ref(shift));
}
);
# Public method
sub is_fragment_server {
my $self = shift;
my $federated = ref($self->url) ? $self->url : [ $self->url ];
for my $part (@$federated) {
return 0 unless $self->get_query_pattern($part);
}
return 1;
}
# Public method
# Optimized method to find all bindings matching a pattern
# See:
# Verborgh, Ruben, et al. Querying Datasets on the Web with High Availability. ISWC2014
# http://linkeddatafragments.org/publications/iswc2014.pdf
sub get_pattern {
my ($self,$bgp,$context,%args) = @_;
unless (defined $bgp) {
RDF::LDF::Error->throw(text => "can't execute get_pattern for an empty pattern");
}
my (@triples) = ($bgp->isa('RDF::Trine::Statement') or $bgp->isa('RDF::Query::Algebra::Filter'))
? $bgp
: $bgp->triples;
unless (@triples) {
RDF::LDF::Error->throw(text => "can't execute get_pattern for an empty pattern");
}
my @vars = $bgp->referenced_variables;
my @bgps = map { $self->_parse_triple_pattern($_)} @triples;
my $sub = sub {
state $it = $self->_find_variable_bindings(\@bgps);
my $b = $it->();
return undef unless $b;
my $binding = RDF::Trine::VariableBindings->new({});
for my $key (keys %$b) {
my $val = $b->{$key};
$key =~ s{^\?}{};
$binding->set($key => $val);
}
$binding;
};
RDF::Trine::Iterator::Bindings->new($sub,\@vars);
}
sub _find_variable_bindings {
my $self = shift;
my $bgps = shift;
my $bindings = shift // {};
my $iterator = sub {
state $it;
state $results = sub {};
my $ret;
# Loop over all variabe bindings with multiple matches
while (!defined($ret = $results->())) {
unless (defined $it) {
# Find the an binding iterator for the best pattern from $bgpgs
($it,$bgps) = $self->_find_variable_bindings_($bgps);
return undef unless $it;
}
# Update all the other bgps with the current binding..
my $this_binding = $it->();
return undef unless $this_binding;
$bindings = { %$bindings , %$this_binding };
return $bindings unless @$bgps;
# Apply all the bindings to the rest of the bgps;
my $bgps_prime = $self->_apply_binding($this_binding,$bgps);
$results = $self->_find_variable_bindings($bgps_prime,$bindings);
}
$ret;
};
$iterator;
}
# Given an array ref of patterns return the variable bindings for the
# pattern with the least number of triples.
#
# my ($iterator, $rest) = $self->_find_variable_bindings([ {pattern} , {pattern} , ... ]);
#
# where:
#
# $iterator - Iterator for variable bindings for the winnnig pattern, or undef when no
# patterns are provided or we get zero results
#
# $rest - An array ref of patterns not containing the best pattern
sub _find_variable_bindings_ {
my ($self,$bgps) = @_;
return (undef, undef) unless _is_array_ref($bgps) && @$bgps > 0;
my ($pattern,$rest) = $self->_find_best_pattern($bgps);
return (undef,undef) unless defined $pattern;
my $it = $self->get_statements($pattern);
# Build a mapping of variable bindings to Triple nodes. E.g.
# {
# '?s' => 'subject' ,
# '?p' => 'predicate' ,
# '?o' => 'object' ,
#}
my %pattern_var_map = map { $pattern->{$_} =~ /^\?/ ? ($pattern->{$_} , $_) : () } keys %$pattern;
my $num_of_bindings = keys %pattern_var_map;
my $sub = sub {
my $triple = $it->();
return undef unless defined $triple;
my %var_map = %pattern_var_map;
for (keys %var_map) {
my $method = $var_map{$_};
$var_map{$_} = $triple->$method;
}
return {%var_map};
};
return ($sub,$rest);
}
sub _apply_binding {
my ($self,$binding,$bgps) = @_;
return unless _is_array_ref($bgps) && @$bgps > 0;
my $copy = clone $bgps;
my @new = ();
for my $pattern (@$copy) {
for (qw(subject predicate object)) {
my $val = $pattern->{$_};
if (defined($val) && $binding->{$val}) {
my $str_val = $self->_node_as_string($binding->{$val});
$pattern->{$_} = $str_val
}
}
push @new, $pattern;
}
return \@new;
}
# Create a pattern which binds to the graph pattern
#
# Usage:
#
# my $triples = [
# { subject => ... , predicate => ... , object => ... } , #tp1
# { subject => ... , predicate => ... , object => ... } , #tp2
# ...
# { subject => ... , predicate => ... , object => ... } , #tpN
# ];
#
# my ($pattern, $rest) = $self->_find_best_pattern($triples);
#
# $pattern => Pattern in $triples which least ammount of results
# $rest => All patterns in $triples except $pattern
#
sub _find_best_pattern {
my ($self,$triples) = @_;
return undef unless @$triples > 0;
# If we only have one tripple pattern, the use it to create the bind
if (@$triples == 1) {
return $triples->[0] , [];
}
my $best_pattern = undef;
my $best_count = undef;
for my $pattern (@$triples) {
my $count = $self->_total_triples($pattern) // 0;
if ($count == 0) {
$best_pattern = undef;
$best_count = 0;
last;
}
elsif (!defined $best_count || $count < $best_count) {
$best_count = $count;
$best_pattern = $pattern;
}
}
return (undef,$triples) unless defined $best_pattern;
my @rest_triples = map { Data::Compare::Compare($_,$best_pattern) ? () : ($_) } @$triples;
return ($best_pattern, \@rest_triples);
}
# Find the total number of triples available for a pattern
#
# Usage:
#
# my $count = $self->_total_triples(
# { subject => ... , predicate => ... , object => ...}
# );
# Where
# $count is a number
sub _total_triples {
my ($self,$pattern) = @_;
# Retrieve one...
my $iterator = $self->get_statements($pattern);
return 0 unless $iterator;
my ($model,$info) = $iterator->();
$info->{hydra_totalItems};
}
sub _node_as_string {
my $self = shift;
my $node = shift;
if (_is_blessed($node) && $node->isa('RDF::Trine::Node')) {
if ($node->isa('RDF::Trine::Node::Variable')) {
return $node->as_string; # ?foo
} elsif ($node->isa('RDF::Trine::Node::Literal')) {
return $node->as_string; # includes quotes and any language or datatype
} else {
return $node->value; # the raw IRI or blank node identifier value, without other syntax
}
}
return '';
}
# For an BGP triple create a fragment pattern
sub _parse_triple_pattern {
my ($self,$triple) = @_;
my $subject = $self->_node_as_string($triple->subject);
my $predicate = $self->_node_as_string($triple->predicate);
my $object = $self->_node_as_string($triple->object);
my $hash = {
subject => $subject ,
predicate => $predicate,
object => $object
};
return $hash;
}
# Dynamic find out which triple patterns need to be used to query the fragment server
# Returns a hash:
# {
# rdf_subject => ,
# rdf_predicate => ,
# rdf_object =>
# void_uriLookupEndpoint =>
# }
sub get_query_pattern {
my ($self,$url) = @_;
my $fragment = $self->get_model_and_info($url);
return undef unless defined $fragment;
my $info = $fragment->{info};
my $pattern;
return undef unless _is_hash_ref($info);
return undef unless $info->{void_uriLookupEndpoint};
for (keys %$info) {
next unless _is_hash_ref($info->{$_}) && $info->{$_}->{hydra_property};
my $property = join "_" , $self->sn->qname($info->{$_}->{hydra_property});
my $variable = $info->{$_}->{hydra_variable};
$pattern->{$property} = $variable;
}
return undef unless $pattern->{rdf_subject};
return undef unless $pattern->{rdf_predicate};
return undef unless $pattern->{rdf_object};
$pattern->{void_uriLookupEndpoint} = $info->{void_uriLookupEndpoint};
$pattern;
}
#----------------------------------------------------------------------------------
# Public method
sub get_statements {
my ($self,@triple) = @_;
my ($subject,$predicate,$object);
if (@triple == 3) {
($subject,$predicate,$object) = @triple;
}
elsif (_is_hash_ref($triple[0])) {
$subject = $triple[0]->{subject};
$predicate = $triple[0]->{predicate};
$object = $triple[0]->{object};
}
$subject = $subject->value if (_is_blessed($subject) && $subject->isa('RDF::Trine::Node') and not $subject->is_variable);
$predicate = $predicate->value if (_is_blessed($predicate) && $predicate->isa('RDF::Trine::Node') and not $predicate->is_variable);
if (_is_blessed($object) && $object->isa('RDF::Trine::Node') and not $object->is_variable) {
$object = ($object->isa('RDF::Trine::Node::Literal')) ? $object->as_string : $object->value;
}
# Do a federated search over all the URLs provided
my $parts = ref($self->url) ? $self->url : [ $self->url ];
my @federated;
for my $part (@$parts) {
my $pattern = $self->get_query_pattern($part);
return undef unless defined $pattern;
my %params;
$params{ $pattern->{rdf_subject} } = $subject if _is_string($subject);
$params{ $pattern->{rdf_predicate} } = $predicate if _is_string($predicate);
$params{ $pattern->{rdf_object} } = $object if _is_string($object);
my $template = URI::Template->new($pattern->{void_uriLookupEndpoint});
push @federated , $template->process(%params)->as_string;
}
my $sub = sub {
state $model;
state $info;
state $iterator;
state $url = shift(@federated);
my $triple;
do {
unless (defined $model) {
# When no more result pages are available switch
# to the next federated url...
return unless defined($url) || defined($url = pop(@federated));
my $fragment = $self->get_model_and_info($url);
return unless defined $fragment->{model};
$model = $fragment->{model};
$info = $fragment->{info};
$url = $info->{hydra_next};
$iterator = $model->get_statements;
}
$triple = $iterator->next;
unless ($iterator->peek) {
$model = undef;
}
}
while (!defined $triple && defined($url = pop(@federated)));
wantarray ? ($triple,$info) : $triple;
};
$sub;
}
# Fetch a fragment page and extract the metadata
sub get_model_and_info {
my ($self,$url) = @_;
if (my $cache = $self->lru->get($url)) {
return $cache;
}
my $model = $self->get_fragment($url);
my $info = {};
if (defined $model) {
$info = $self->_model_metadata($model,$url, clean => 1);
}
my $fragment = { model => $model , info => $info };
$self->lru->set($url => $fragment);
$fragment;
}
# Fetch a result page from fragment server
sub get_fragment {
my ($self,$url) = @_;
return undef unless $url;
$self->log->info("fetching: $url");
my $model = RDF::Trine::Model->temporary_model;
# JSON support in RDF::Trine isn't JSON-LD
# Set the accept header quality parameter at a minimum for this format
my $ua = clone(RDF::Trine->default_useragent);
$ua->agent("RDF:::LDF/$RDF::LDF::VERSION " . $ua->_agent);
$ua->default_header('Accept','text/turtle;q=1.0,application/turtle;q=1.0,application/x-turtle;q=1.0,application/rdf+xml;q=0.9,text/x-nquads;q=0.9,application/json;q=0.1,application/x-rdf+json;q=0.1');
eval {
# Need to explicitly set the useragent to keep the accept headers
RDF::Trine::Parser->parse_url_into_model($url, $model, useragent => $ua);
};
if ($@) {
$self->log->error("failed to parse input");
}
return $model;
}
# Create a hash with fragment metadata from a RDF::Trine::Model
# parameters:
# $model - RDF::Trine::Model
# $this_uri - result page URL
# %opts
# clean => 1 - remove the metadata from the model
sub _model_metadata {
my ($self,$model,$this_uri,%opts) = @_;
my $info = {};
$self->_build_metadata($model, {
subject => RDF::Trine::Node::Resource->new($this_uri)
} , $info);
if ($opts{clean}) {
$model->remove_statements(
RDF::Trine::Node::Resource->new($this_uri),
undef,
undef
);
$model->remove_statements(
undef,
undef,
RDF::Trine::Node::Resource->new($this_uri)
);
}
for my $predicate (
'http://www.w3.org/ns/hydra/core#variable' ,
'http://www.w3.org/ns/hydra/core#property' ,
'http://www.w3.org/ns/hydra/core#mapping' ,
'http://www.w3.org/ns/hydra/core#template' ,
'http://www.w3.org/ns/hydra/core#member' ,
'http://www.w3.org/ns/hydra/core#variableRepresentation' ,
) {
$self->_build_metadata($model, {
predicate => RDF::Trine::Node::Resource->new($predicate)
}, $info);
if ($opts{clean}) {
$model->remove_statements(
undef,
RDF::Trine::Node::Resource->new($predicate) ,
undef);
}
}
my $source = $info->{dct_source}->[0] if _is_array_ref($info->{dct_source});
if ($source) {
$self->_build_metadata($model, {
subject => RDF::Trine::Node::Resource->new($source)
}, $info);
if ($opts{clean}) {
$model->remove_statements(
RDF::Trine::Node::Resource->new($source),
undef,
undef
);
$model->remove_statements(
undef,
undef,
RDF::Trine::Node::Resource->new($source)
);
}
}
$info;
}
# Helper method for _parse_model
sub _build_metadata {
my ($self, $model, $triple, $info) = @_;
my $iterator = $model->get_statements(
$triple->{subject},
$triple->{predicate},
$triple->{object}
);
while (my $triple = $iterator->next) {
my $subject = $triple->subject->as_string;
my $predicate = $triple->predicate->uri_value;
my $object = $triple->object->value;
my $qname = join "_" , $self->sn->qname($predicate);
if ($qname =~ /^(hydra_variable|hydra_property)$/) {
my $id= $triple->subject->value;
$info->{"_$id"}->{$qname} = $object;
}
elsif ($qname eq 'hydra_mapping') {
my $id= $triple->subject->value;
push @{$info->{"_$id"}->{$qname}} , $object;
}
elsif ($qname =~ /^(void|hydra)_/) {
$info->{$qname} = $object;
}
else {
push @{$info->{$qname}} , $object;
}
}
$info;
}
sub _is_array_ref {
return ref($_[0]) eq 'ARRAY';
}
sub _is_hash_ref {
return ref($_[0]) eq 'HASH';
}
sub _is_blessed {
return ref($_[0]) =~ /\S/;
}
sub _is_string {
return defined($_[0]) && !ref($_[0]) && ref(\$_[0]) ne 'GLOB' && length($_[0]) > 0;
}
1;
__END__
=head1 NAME
RDF::LDF - Linked Data Fragments client
=begin markdown
# STATUS
[](https://travis-ci.org/phochste/RDF-LDF)
[](https://coveralls.io/r/phochste/RDF-LDF)
[](http://cpants.cpanauthors.org/dist/RDF-LDF)
=end markdown
=head1 SYNOPSIS
use RDF::Trine::Store::LDF;
use RDF::Trine::Store;
# To use a HTTP cache:
use LWP::UserAgent::CHICaching;
my $cache = CHI->new( driver => 'Memory', global => 1 );
my $ua = LWP::UserAgent::CHICaching->new(cache => $cache);
RDF::Trine->default_useragent($ua);
my $store = RDF::Trine::Store->new_with_config({
storetype => 'LDF',
url => $url
});
my $it = $store->get_statements();
while (my $st = $it->next) {
# $st is a RDF::Trine::Statement
print "$st\n";
}
# Or the low level modules themselves
use RDF::LDF;
my $client = RDF::LDF->new(url => 'http://fragments.dbpedia.org/2014/en');
my $iterator = $client->get_statements($subject, $predicate, $object);
while (my $statement = $iterator->()) {
# $model is a RDF::Trine::Statement
}
=head1 DESCRIPTION
RDF::LDF implements a basic L client.
This a low level module to implement the Linked Data Fragment protocol. You probably want to
use L.
=head1 CONFIGURATION
=over
=item url
URL to retrieve RDF from.
Experimental: more than one URL can be provided for federated search over many LDF endpoints.
my $store = RDF::Trine::Store->new_with_config({
storetype => 'LDF',
url => [ $url1, $url2, $url3 ]
});
# or
my $client = RDF::LDF->new(url => [ $url1, $url2, $url3 ]);
=back
=head1 METHODS
=over
=item get_statements( $subject, $predicate, $object )
Return an iterator for every RDF::Trine::Statement served by the LDF server.
=item get_pattern( $bgp );
Returns a stream object of all bindings matching the specified graph pattern.
=back
=head1 CONTRIBUTORS
Patrick Hochstenbach, C<< patrick.hochstenbach at ugent.be >>
Gregory Todd Williams, C<< greg@evilfunhouse.com >>
Jacob Voss, C<< voss@gbv.de >>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by Patrick Hochstenbach.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
=encoding utf8
=cut
LDF-pattern.t 100644 000765 000024 17617 13104333613 15375 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/t use open ':std', ':encoding(utf8)';
use strict;
use warnings;
use Test::More;
use Test::Exception;
use RDF::Trine qw(statement iri variable);
use RDF::LDF;
use Test::LWP::UserAgent;
use Encode;
use utf8;
RDF::Trine->default_useragent(user_agent());
my $client = RDF::LDF->new(url => 'http://example.org/2014/en?test=1');
ok $client , 'got a client to http://example.org/2014/en?test=1';
ok $client->is_fragment_server , 'this server is a ldf server';
{
note("single triple pattern");
my $triple = statement(variable('s'), iri('http://dbpedia.org/ontology/birthPlace'), variable('place'));
my $iter = $client->get_pattern($triple);
isa_ok $iter, 'RDF::Trine::Iterator::Bindings', 'iterator for get_pattern';
my $r = $iter->next;
isa_ok $r, 'RDF::Trine::VariableBindings', 'result object';
my $s = $r->{'s'};
isa_ok $s, 'RDF::Trine::Node::Resource', 'expected subject IRI';
is $s->value, 'http://dbpedia.org/resource/Agusti_Pol', 'expected subject IRI value';
}
{
note("single triple pattern utf8");
my $triple = statement(variable('s'), iri('http://xmlns.com/foaf/0.1/name'), variable('name'));
my $iter = $client->get_pattern($triple);
isa_ok $iter, 'RDF::Trine::Iterator::Bindings', 'iterator for get_pattern';
my $r = $iter->next;
isa_ok $r, 'RDF::Trine::VariableBindings', 'result object';
my $s = $r->{'s'};
isa_ok $s, 'RDF::Trine::Node::Resource', 'expected subject IRI';
is $s->value, 'http://dbpedia.org/resource/François_Schuiten', 'expected subject IRI value';
}
{
note("two triple pattern BGP");
my $bgp = RDF::Query::Algebra::BasicGraphPattern->new(
statement(variable('s'), iri('http://dbpedia.org/ontology/birthPlace'), variable('place')),
statement(variable('s'), iri('http://xmlns.com/foaf/0.1/name'), variable('name')),
);
my $iter = $client->get_pattern($bgp);
isa_ok $iter, 'RDF::Trine::Iterator::Bindings', 'iterator for get_pattern';
my $count = 0;
my %seen;
while (my $r = $iter->next) {
isa_ok $r, 'RDF::Trine::VariableBindings', 'result object';
my $s = $r->{'s'};
$seen{ $s->value }{count}++;
push(@{ $seen{ $s->value }{name} }, $r->{'name'}->value);
push(@{ $seen{ $s->value }{place} }, $r->{'place'}->value);
$count++;
}
is $count, 3, 'result count';
is_deeply(\%seen, {
'http://dbpedia.org/resource/Agustiar_Batubara' => {
'count' => 2,
'name' => ['Agustiar Batubara', 'Agustiar Batubara'],
'place' => [ 'http://dbpedia.org/resource/Indonesia', 'http://dbpedia.org/resource/Surabaya'],
},
'http://dbpedia.org/resource/Agusti_Pol' => {
'count' => 1,
'name' => [ 'Agusti Pol'],
'place' => [ 'http://dbpedia.org/resource/Andorra'],
}
}, 'expected counts');
}
done_testing;
sub add_fragment_response {
my $ua = shift;
my $url = shift;
my $content = shift;
my $total = shift // 1;
my $next = shift;
my $NS = <<'END';
@prefix rdf: .
@prefix rdfs: .
@prefix owl: .
@prefix skos: .
@prefix xsd: .
@prefix dc: .
@prefix dc11: .
@prefix foaf: .
@prefix geo: .
@prefix dbpedia: .
@prefix dbpedia-owl: .
@prefix dbpprop: .
@prefix hydra: .
@prefix void: .
END
my $META = <<'END';
hydra:member .
void:subset ;
void:uriLookupEndpoint "http://example.org/2014/en?test=1{&subject,predicate,object}" ;
a void:Dataset, hydra:Collection ;
hydra:search [
hydra:mapping [
hydra:property rdf:object ;
hydra:variable "object"
], [
hydra:property rdf:predicate ;
hydra:variable "predicate"
], [
hydra:property rdf:subject ;
hydra:variable "subject"
] ;
hydra:template "http://example.org/2014/en?test=1{&subject,predicate,object}"
] .
END
my $FRAGMENT = <<"END";
<$url>
dc:description "Triple Pattern Fragment of the 'DBpedia 2014' dataset containing triples matching the pattern { ?s ?p ?o }." ;
dc:source ;
dc:title "Linked Data Fragment of DBpedia 2014" ;
void:subset ;
a hydra:Collection, hydra:PagedCollection ;
hydra:first <$url> ;
hydra:itemsPerPage 5 ;
void:triples $total ;
hydra:totalItems $total .
END
if (defined($next)) {
$FRAGMENT .= <<"END";
<$url> hydra:next<$next> .
END
}
$ua->map_response(
qr{^\Q$url\E$},
HTTP::Response->new(
'200',
'OK',
['Content-Type' => 'text/turtle;charset=utf-8'],
Encode::encode_utf8($NS) .
Encode::encode_utf8($META) .
Encode::encode_utf8($FRAGMENT) .
Encode::encode_utf8($content)
)
);
}
sub user_agent {
my $ua = Test::LWP::UserAgent->new( agent => "RDF:::LDF/$RDF::LDF::VERSION" );
# ?s dbpedia-owl:birthPlace ?name
my $birthPlaces = <<'END';
dbpedia:Agusti_Pol dbpedia-owl:birthPlace dbpedia:Andorra .
dbpedia:Agustiar_Batubara dbpedia-owl:birthPlace dbpedia:Indonesia, dbpedia:Surabaya .
dbpedia:Agustin_Aguayo dbpedia-owl:birthPlace dbpedia:Guadalajara .
END
add_fragment_response($ua, 'http://example.org/2014/en?test=1', $birthPlaces, 4);
add_fragment_response($ua, 'http://example.org/2014/en?test=1&subject=%3Fs&predicate=http%3A%2F%2Fdbpedia.org%2Fontology%2FbirthPlace&object=%3Fplace', $birthPlaces, 3);
# ?s foaf:name ?name (page 1)
my $names = <<'END';
dbpedia:François_Schuiten foaf:name "François Schuiten" .
foaf:name "4th arrondissement of Marseille"@en .
foaf:name "4th arrondissement of Paris"@en .
foaf:name "4th arrondissement of Porto-Novo"@en .
foaf:name "4th arrondissement"@en .
foaf:name "Fourth Municipality of Naples"@en, "Municipalità 4"@en, "Quarta Municipalità"@en .
END
add_fragment_response($ua, 'http://example.org/2014/en?test=1&subject=%3Fs&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $names, 7, 'http://example.org/2014/en?test=1&subject=%3Fs&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname&page=2');
# ?s foaf:name ?name (page 2)
my $names2 = <<'END';
dbpedia:Agusti_Pol foaf:name "Agusti Pol" .
dbpedia:Agustiar_Batubara foaf:name "Agustiar Batubara" .
END
add_fragment_response($ua, 'http://example.org/2014/en?test=1&subject=%3Fs&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname&page=2', $names, 7);
# dbpedia:Agusti_Pol foaf:name ?name
my $pol_name = <<'END';
dbpedia:Agusti_Pol foaf:name "Agusti Pol" .
END
add_fragment_response($ua, 'http://example.org/2014/en?test=1&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgusti_Pol&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $pol_name, 1);
# dbpedia:Agustiar_Batubara foaf:name ?name
my $batubara_name = <<'END';
dbpedia:Agustiar_Batubara foaf:name "Agustiar Batubara" .
END
add_fragment_response($ua, 'http://example.org/2014/en?test=1&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustiar_Batubara&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $batubara_name, 1);
# dbpedia:Agustin_Aguayo foaf:name ?name (No results)
add_fragment_response($ua, 'http://example.org/2014/en?test=1&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustin_Aguayo&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', '', 0);
return $ua;
}
bin 000755 000765 000024 0 13104333613 13241 5 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 ldf-client.pl 100755 000765 000024 5710 13104333613 15765 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/bin #!/usr/bin/env perl
$|++;
use strict;
use RDF::LDF;
use RDF::Trine::Store::LDF;
use RDF::Trine::Store;
use RDF::Query;
use Getopt::Long;
use utf8;
use Encode;
use JSON ();
my $JSON = JSON->new->utf8->allow_nonref;
sub encode_json { $JSON->encode(@_) }
my ($subject,$predicate,$object);
@ARGV = map { Encode::decode('UTF-8', $_) } @ARGV;
GetOptions("subject=s" => \$subject , "predicate=s" => \$predicate , "object=s" => \$object);
my $url = shift;
my $sparql = shift;
unless (defined $url) {
print STDERR <
--predicate=<.>
--object=<.>
EOF
exit(1);
}
init_cache();
if (defined $sparql) {
process_sparql($sparql);
}
else {
process_fragments($subject,$predicate,$object);
}
sub init_cache {
use LWP::UserAgent::CHICaching;
my $cache = CHI->new( driver => 'Memory', global => 1 );
my $ua = LWP::UserAgent::CHICaching->new(cache => $cache);
RDF::Trine->default_useragent($ua);
}
sub process_fragments {
my ($subject,$predicate,$object) = @_;
my $client = RDF::LDF->new(url => [split(/\s+/,$url)]);
my $it = $client->get_statements($subject,$predicate,$object);
print "[\n";
if ($it) {
while (my $st = $it->()) {
printf "{\"subject\":%s,\"predicate\":%s,\"object\":%s}\n",
encode_json($st->subject->value),
encode_json($st->predicate->value),
encode_json($st->object->value);
}
}
print "]\n";
}
sub process_sparql {
my $sparql = shift;
$sparql = do { local (@ARGV,$/) = $sparql; <> } if -r $sparql;
my $store = RDF::Trine::Store->new_with_config({
storetype => 'LDF',
url => [split(/\s+/,$url)]
});
my $model = RDF::Trine::Model->new($store);
my $rdf_query = RDF::Query->new( $sparql );
unless ($rdf_query) {
print STDERR "failed to parse:\n$sparql";
exit(2);
}
my $iter = $rdf_query->execute($model);
print "[\n";
if ($iter) {
my $count = 0;
while (my $s = $iter->next) {
my $h = {};
for my $v ($s->variables) {
my $node = $s->{$v};
my $val;
if ($node->isa('RDF::Trine::Node::Variable')) {
$val = $node->as_string; # ?foo
} elsif ($node->isa('RDF::Trine::Node::Literal')) {
$val = $node->as_string; # includes quotes and any language or datatype
$val =~ s{^"|"$}{}g;
} else {
$val = $node->value; # the raw IRI or blank node identifier value, without other syntax
}
$h->{$v} = $val;
}
print (",\n") if ($count++ > 0);
print encode_json($h);
}
print "\n";
}
print "]\n";
} demo 000755 000765 000024 0 13104333613 13415 5 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23 sparql01.txt 100644 000765 000024 1110 13104333613 15752 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en demo/sparql01.txt
PREFIX owl:
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE { ?s ?p ?o} sparql02.txt 100644 000765 000024 344 13104333613 15743 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://data.linkeddatafragments.org/viaf demo/sparql02.txt
PREFIX schema:
SELECT * WHERE {
?work schema:name ?name;
schema:author [ schema:name "Picasso, Pablo" ].
} sparql03.txt 100644 000765 000024 350 13104333613 15741 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://data.linkeddatafragments.org/viaf demo/sparql03.txt
PREFIX schema:
SELECT * WHERE {
?work schema:name ?name;
schema:author [ schema:name "Heisenberg, Werner" ].
} sparql04.txt 100644 000765 000024 1251 13104333613 15763 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en demo/sparql04.txt
PREFIX owl:
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE {
?musician .
} sparql05.txt 100644 000765 000024 1314 13104333613 15764 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en demo/sparql05.txt
PREFIX owl:
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE {
?musician .
?musician foaf:name ?name .
}
sparql06.txt 100644 000765 000024 370 13104333613 15746 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en sparql06.txt
PREFIX ontology:
PREFIX property:
SELECT ?craft
WHERE {
?craft a ontology:Spacecraft .
} LIMIT 150 sparql07.txt 100644 000765 000024 544 13104333613 15752 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en sparql07.txt
PREFIX ontology:
PREFIX property:
PREFIX xsd:
SELECT * {
?craft a ontology:Spacecraft .
?craft property:launch ?date .
FILTER (
?date > "1999-01-01"^^xsd:date
)
} sparql08.txt 100644 000765 000024 677 13104333613 15762 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en sparql07.txt
PREFIX rdfs:
PREFIX type:
PREFIX prop:
SELECT ?country_name ?population
WHERE {
?country a type:LandlockedCountries ;
rdfs:label ?country_name ;
prop:populationEstimate ?population .
FILTER (?population > 15000000) .
} sparql09.txt 100644 000765 000024 1010 13104333613 15761 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/demo # perl -I lib bin/ldf-client.pl http://fragments.dbpedia.org/2014/en sparql09.txt
PREFIX type:
PREFIX prop:
PREFIX rdfs:
SELECT ?country_name ?population
WHERE {
?country a type:LandlockedCountries ;
rdfs:label ?country_name ;
prop:populationEstimate ?population .
FILTER (?population > 15000000 &&
langMatches(lang(?country_name), "EN")) .
} ORDER BY DESC(?population) LDF 000755 000765 000024 0 13104333613 14257 5 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/lib/RDF Error.pm 100644 000765 000024 311 13104333613 16021 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/lib/RDF/LDF package RDF::LDF::Error;
# The error handling via Error in RDF::Trine is in conflict with
# Moo packages. This Throwable package is a stop gap
use Moo;
with 'Throwable';
has text => (is => 'ro');
1; author-pod-syntax.t 100644 000765 000024 454 13104333613 16652 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/t #!perl
BEGIN {
unless ($ENV{AUTHOR_TESTING}) {
print qq{1..0 # SKIP these tests are for testing by the author\n};
exit
}
}
# This file was automatically generated by Dist::Zilla::Plugin::PodSyntaxTests.
use strict; use warnings;
use Test::More;
use Test::Pod 1.41;
all_pod_files_ok();
RDF-Trine-Store-LDF.t 100644 000765 000024 24372 13104333613 16500 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/t use open ':std', ':encoding(utf8)';
use strict;
use warnings;
use Test::More;
use Test::Exception;
use RDF::Trine::Store;
use utf8;
my $pkg;
BEGIN {
$pkg = 'RDF::Trine::Store::LDF';
use_ok $pkg;
}
require_ok $pkg;
SKIP: {
unless ($ENV{RDFLDF_NETWORK_TESTS}) {
skip( "No network. Set RDFLDF_NETWORK_TESTS to run these tests.", 5 );
}
my $store;
$store = $pkg->new_with_config({
storetype => 'LDF',
url => 'http://fragments.dbpedia.org/201x/en'
});
ok ! defined $store , 'indeed this is not a LDF store';
$store = $pkg->new_with_config({
storetype => 'LDF',
url => 'http://fragments.dbpedia.org/2014/en'
});
ok $store , 'got a correct store';
throws_ok { $store->add_statement() } 'RDF::Trine::Error::UnimplementedError' , 'add_statement throws error';
throws_ok { $store->remove_statement() } 'RDF::Trine::Error::UnimplementedError' , 'remove_statement throws error';
throws_ok { $store->remove_statements() } 'RDF::Trine::Error::UnimplementedError' , 'remove_statements throws error';
my $model = RDF::Trine::Model->new($store);
ok $model , 'got a model';
my $it = $store->get_statements();
ok $it , 'got an iterator on the compelete database';
my $triple = $it->next();
isa_ok $triple , 'RDF::Trine::Statement' , 'triple is an RDF::Trine::Statement';
ok $triple , 'got a triple';
{
note("sparql test");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE { ?s ?o ?p}
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->next();
ok $binding , 'got a binding';
ok $binding->{'s'};
ok $binding->{'o'};
ok $binding->{'p'};
}
{
note("sparql test");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE {
.
}
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->next();
ok $binding , 'got a binding';
is int(keys %$binding) , 0 , 'binding is empty';
}
{
note("sparql test");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE {
?musician .
}
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->next();
ok $binding , 'got a binding';
ok $binding->{'musician'};
}
{
note("sparql test");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT * WHERE {
?musician .
?musician foaf:name ?name .
}
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->next();
ok $binding , 'got a binding';
ok $binding->{'musician'};
ok $binding->{'name'};
}
{
note("sparql test utf8");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT *
WHERE {
?p .
}
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->();
ok $binding , 'got a binding';
ok $binding->{'p'};
}
{
note("sparql test utf8");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT *
WHERE {
?o .
}
LIMIT 1
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->();
ok $binding , 'got a binding';
ok $binding->{'o'};
}
{
note("sparql test");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT *
WHERE {
?p a .
?p ?c .
?c "York"\@en .
?musician .
}
EOF
my $it = get_sparql($model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->next();
ok $binding , 'got a binding';
ok $binding->{'p'};
ok $binding->{'c'};
ok $binding->{'musician'};
ok defined($it->next()) , 'got only more results';
}
# federated test
note("federated test");
my $f_store = $pkg->new_with_config({
storetype => 'LDF',
url => [qw(
http://data.linkeddatafragments.org/dbpedia2014
http://data.linkeddatafragments.org/geonames
)]
});
ok $f_store , 'got a correct federated store';
throws_ok { $f_store->add_statement() } 'RDF::Trine::Error::UnimplementedError' , 'add_statement throws error';
throws_ok { $f_store->remove_statement() } 'RDF::Trine::Error::UnimplementedError' , 'remove_statement throws error';
throws_ok { $f_store->remove_statements() } 'RDF::Trine::Error::UnimplementedError' , 'remove_statements throws error';
my $f_model = RDF::Trine::Model->new($f_store);
ok $f_model , 'got a model';
$it = $f_store->get_statements();
ok $it , 'got an iterator on the compelete database';
$triple = $it->next();
isa_ok $triple , 'RDF::Trine::Statement' , 'triple is an RDF::Trine::Statement';
ok $triple , 'got a triple';
{
note("sparql test utf8 [federated]");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX foaf:
PREFIX dc:
PREFIX :
PREFIX dbpedia2:
PREFIX dbpedia:
PREFIX skos:
SELECT *
WHERE {
?p .
}
EOF
my $it = get_sparql($f_model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->();
ok $binding , 'got a binding';
ok $binding->{'p'};
}
{
note("sparql test utf8 [federated]");
my $sparql =<
PREFIX xsd:
PREFIX rdfs:
PREFIX rdf:
PREFIX geonames-ontology:
SELECT *
WHERE {
?s geonames-ontology:wikipediaArticle .
}
EOF
my $it = get_sparql($f_model,$sparql);
ok $it , 'got an iterator';
my $binding = $it->();
ok $binding , 'got a binding';
ok $binding->{'s'};
}
}
done_testing;
sub get_sparql {
my $model = shift;
my $sparql = shift;
my $rdf_query = RDF::Query->new( $sparql );
$rdf_query->execute($model);
}
LDF-pattern-federated.t 100644 000765 000024 24334 13104333613 17310 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/t use open ':std', ':encoding(utf8)';
use strict;
use warnings;
use Test::More;
use Test::Exception;
use RDF::Trine qw(statement iri variable);
use RDF::LDF;
use Test::LWP::UserAgent;
use Encode;
use utf8;
RDF::Trine->default_useragent(user_agent());
my $client = RDF::LDF->new(url => [qw(
http://example.org/A
http://example.org/C
http://example.org/B
)]);
ok $client , 'got a federated client to http://example.org/A , http://example.org/B and http://example.org/C ... ';
ok $client->is_fragment_server , 'this server is a ldf server';
{
note("single triple pattern");
my $triple = statement(variable('s'), iri('http://dbpedia.org/ontology/birthPlace'), variable('place'));
my $iter = $client->get_pattern($triple);
isa_ok $iter, 'RDF::Trine::Iterator::Bindings', 'iterator for get_pattern';
my $r = $iter->next;
isa_ok $r, 'RDF::Trine::VariableBindings', 'result object';
my $s = $r->{'s'};
isa_ok $s, 'RDF::Trine::Node::Resource', 'expected subject IRI';
is $s->value, 'http://dbpedia.org/resource/Agusti_Pol', 'expected subject IRI value';
}
{
note("single triple pattern utf8");
my $triple = statement(variable('s'), iri('http://xmlns.com/foaf/0.1/name'), variable('name'));
my $iter = $client->get_pattern($triple);
isa_ok $iter, 'RDF::Trine::Iterator::Bindings', 'iterator for get_pattern';
my $r = $iter->next;
isa_ok $r, 'RDF::Trine::VariableBindings', 'result object';
my $s = $r->{'s'};
isa_ok $s, 'RDF::Trine::Node::Resource', 'expected subject IRI';
is $s->value, 'http://dbpedia.org/resource/François_Schuiten', 'expected subject IRI value';
}
{
note("two triple pattern BGP");
my $bgp = RDF::Query::Algebra::BasicGraphPattern->new(
statement(variable('s'), iri('http://dbpedia.org/ontology/birthPlace'), variable('place')),
statement(variable('s'), iri('http://xmlns.com/foaf/0.1/name'), variable('name')),
);
my $iter = $client->get_pattern($bgp);
isa_ok $iter, 'RDF::Trine::Iterator::Bindings', 'iterator for get_pattern';
my $count = 0;
my %seen;
while (my $r = $iter->next) {
isa_ok $r, 'RDF::Trine::VariableBindings', 'result object';
my $s = $r->{'s'};
$seen{ $s->value }{count}++;
push(@{ $seen{ $s->value }{name} }, $r->{'name'}->value);
push(@{ $seen{ $s->value }{place} }, $r->{'place'}->value);
$count++;
}
is $count, 3, 'result count';
is_deeply(\%seen, {
'http://dbpedia.org/resource/Agustiar_Batubara' => {
'count' => 2,
'name' => ['Agustiar Batubara', 'Agustiar Batubara'],
'place' => [ 'http://dbpedia.org/resource/Indonesia', 'http://dbpedia.org/resource/Surabaya'],
},
'http://dbpedia.org/resource/Agusti_Pol' => {
'count' => 1,
'name' => [ 'Agusti Pol'],
'place' => [ 'http://dbpedia.org/resource/Andorra'],
}
}, 'expected counts');
}
done_testing;
sub add_fragment_response {
my $ua = shift;
my $url = shift;
my $content = shift;
my $total = shift // 1;
my $next = shift;
my $endpoint = $url;
$endpoint =~ s{\?.*}{};
my $base = $endpoint;
$base =~ s{(http://[^\/]+/).*}{$1};
my $NS = <<'END';
@prefix rdf: .
@prefix rdfs: .
@prefix owl: .
@prefix skos: .
@prefix xsd: .
@prefix dc: .
@prefix dc11: .
@prefix foaf: .
@prefix geo: .
@prefix dbpedia: .
@prefix dbpedia-owl: .
@prefix dbpprop: .
@prefix hydra: .
@prefix void: .
END
my $META = < hydra:member <${endpoint}#dataset> .
<${endpoint}#dataset>
void:subset <${endpoint}> ;
void:uriLookupEndpoint "${endpoint}?{&subject,predicate,object}" ;
a void:Dataset, hydra:Collection ;
hydra:search [
hydra:mapping [
hydra:property rdf:object ;
hydra:variable "object"
], [
hydra:property rdf:predicate ;
hydra:variable "predicate"
], [
hydra:property rdf:subject ;
hydra:variable "subject"
] ;
hydra:template "${endpoint}?{&subject,predicate,object}"
] .
END
my $FRAGMENT = <
dc:description "Triple Pattern Fragment of the 'DBpedia 2014' dataset containing triples matching the pattern { ?s ?p ?o }." ;
dc:source <${endpoint}#dataset> ;
dc:title "Linked Data Fragment of DBpedia 2014" ;
void:subset <${endpoint}> ;
a hydra:Collection, hydra:PagedCollection ;
hydra:first <$url> ;
hydra:itemsPerPage 5 ;
void:triples $total ;
hydra:totalItems $total .
END
if (defined($next)) {
$FRAGMENT .= <<"END";
<$url>hydra:next<$next> .
END
}
$ua->map_response(
qr{^\Q$url\E$},
HTTP::Response->new(
'200',
'OK',
['Content-Type' => 'text/turtle;charset=utf-8'],
Encode::encode_utf8($NS) .
Encode::encode_utf8($META) .
Encode::encode_utf8($FRAGMENT) .
Encode::encode_utf8($content)
)
);
}
sub user_agent {
my $ua = Test::LWP::UserAgent->new( agent => "RDF:::LDF/$RDF::LDF::VERSION" );
my $birthPlaces = <<'END';
dbpedia:Agusti_Pol dbpedia-owl:birthPlace dbpedia:Andorra .
dbpedia:Agustiar_Batubara dbpedia-owl:birthPlace dbpedia:Indonesia, dbpedia:Surabaya .
dbpedia:Agustin_Aguayo dbpedia-owl:birthPlace dbpedia:Guadalajara .
END
my $names = <<'END';
dbpedia:François_Schuiten foaf:name "François Schuiten" .
foaf:name "4th arrondissement of Marseille"@en .
foaf:name "4th arrondissement of Paris"@en .
foaf:name "4th arrondissement of Porto-Novo"@en .
foaf:name "4th arrondissement"@en .
foaf:name "Fourth Municipality of Naples"@en, "Municipalità 4"@en, "Quarta Municipalità"@en .
END
my $names2 = <<'END';
dbpedia:Agusti_Pol foaf:name "Agusti Pol" .
dbpedia:Agustiar_Batubara foaf:name "Agustiar Batubara" .
END
my $pol_name = <<'END';
dbpedia:Agusti_Pol foaf:name "Agusti Pol" .
END
my $batubara_name = <<'END';
dbpedia:Agustiar_Batubara foaf:name "Agustiar Batubara" .
END
# {A,B,C} all triples
add_fragment_response($ua, 'http://example.org/A', $birthPlaces, 3);
add_fragment_response($ua, 'http://example.org/B', $names, 6);
add_fragment_response($ua, 'http://example.org/C', $names2, 2);
add_fragment_response($ua, 'http://example.org/A?', $birthPlaces, 3);
add_fragment_response($ua, 'http://example.org/B?', $names, 6);
add_fragment_response($ua, 'http://example.org/C?', $names2, 2);
# {A,B,C}: ?s dbpedia-owl:birthPlace ?place
add_fragment_response($ua, 'http://example.org/A?&subject=%3Fs&predicate=http%3A%2F%2Fdbpedia.org%2Fontology%2FbirthPlace&object=%3Fplace', $birthPlaces, 3);
add_fragment_response($ua, 'http://example.org/B?&subject=%3Fs&predicate=http%3A%2F%2Fdbpedia.org%2Fontology%2FbirthPlace&object=%3Fplace', "", 0);
add_fragment_response($ua, 'http://example.org/C?&subject=%3Fs&predicate=http%3A%2F%2Fdbpedia.org%2Fontology%2FbirthPlace&object=%3Fplace', "", 0);
# {A,B,C}: ?s foaf:name ?name
add_fragment_response($ua, 'http://example.org/A?&subject=%3Fs&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', "", 0);
add_fragment_response($ua, 'http://example.org/B?&subject=%3Fs&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $names, 6);
add_fragment_response($ua, 'http://example.org/C?&subject=%3Fs&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $names2, 2);
# {A,B,C}: dbpedia:Augusti_Pol foaf:name ?name
add_fragment_response($ua, 'http://example.org/A?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgusti_Pol&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', "", 0);
add_fragment_response($ua, 'http://example.org/B?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgusti_Pol&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $pol_name,1);
add_fragment_response($ua, 'http://example.org/C?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgusti_Pol&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', "", 0);
# {A,B,C}: dbpedia:Agustiar_Batubara foaf:name ?name
add_fragment_response($ua, 'http://example.org/A?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustiar_Batubara&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', "", 0);
add_fragment_response($ua, 'http://example.org/B?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustiar_Batubara&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', "", 0);
add_fragment_response($ua, 'http://example.org/C?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustiar_Batubara&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', $batubara_name, 1);
# {a,B,C}: dbpedia:Agustin_Aguayo foaf:name ?name (No results)
add_fragment_response($ua, 'http://example.org/A?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustin_Aguayo&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', '', 0);
add_fragment_response($ua, 'http://example.org/B?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustin_Aguayo&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', '', 0);
add_fragment_response($ua, 'http://example.org/C?&subject=http%3A%2F%2Fdbpedia.org%2Fresource%2FAgustin_Aguayo&predicate=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2Fname&object=%3Fname', '', 0);
return $ua;
}
Store 000755 000765 000024 0 13104333613 16027 5 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/lib/RDF/Trine LDF.pm 100644 000765 000024 10643 13104333613 17156 0 ustar 00hochsten staff 000000 000000 RDF-LDF-0.23/lib/RDF/Trine/Store package RDF::Trine::Store::LDF;
use strict;
use warnings;
no warnings 'redefine';
use feature qw(state);
use utf8;
use base qw(RDF::Trine::Store);
use RDF::Trine::Store;
use RDF::Trine::Iterator;
use RDF::LDF;
use RDF::Trine::Error qw(:try);
sub new {
my ($class,%opts) = @_;
my $ref = \%opts;
$ref->{ldf} = RDF::LDF->new( url => $ref->{url});
return undef unless $ref->{ldf}->is_fragment_server;
bless $ref , $class;
}
sub _new_with_string {
my ($class, $cfg) = @_;
$class->new(url => $cfg);
}
sub _new_with_config {
my ($class,$cfg) = @_;
$class->new(url => $cfg->{url});
}
sub get_statements {
my ($self,$subject,$predicate,$object,$context) = @_;
my $sub = $self->{ldf}->get_statements($subject,$predicate,$object);
RDF::Trine::Iterator::Graph->new($sub);
}
sub get_pattern {
my ($self,$bgp,$context) = @_;
$self->{ldf}->get_pattern($bgp,$context);
}
sub get_contexts {
undef;
}
sub add_statement {
throw RDF::Trine::Error::UnimplementedError -text => "LDF add_statement support not implemented";
}
sub remove_statement {
throw RDF::Trine::Error::UnimplementedError -text => "LDF remove_statement support not implemented";
}
sub remove_statements {
throw RDF::Trine::Error::UnimplementedError -text => "LDF remove_statements support not implemented";
}
sub count_statements {
my ($self,$subject,$predicate,$object,$context) = @_;
my $it = $self->{ldf}->get_statements($subject,$predicate,$object);
my ($triples,$info) = $it->();
$info->{hydra_totalItems};
}
sub size {
shift->count_statements;
}
sub supports {
undef;
}
1;
=head1 NAME
RDF::Trine::Store::LDF - RDF Store proxy for a Linked Data Fragment endpoint
=head1 SYNOPSIS
use RDF::Trine::Store::LDF;
use RDF::Trine::Store;
my $store = RDF::Trine::Store->new_with_config({
storetype => 'LDF',
url => $url
});
my $it = $store->get_statements();
while (my $st = $it->next) {
# $st is a RDF::Trine::Statement
print "$st\n";
}
# Or query the store with SPAQRL
use RDF::Query;
my $model = RDF::Trine::Model->new($store);
my $rdf_query = RDF::Query->new(<execute($model);
while (my $s = $iter->next) {
# $s is a RDF::Trine::VariableBinding
print $s->value . "\n";
}
=head1 DESCRIPTION
RDF::Trine::Store::LDF provides a RDF::Trine::Store API to interact with a remote
Linked Data Fragment endpoint. For details see: .
=head1 METHODS
Beyond the methods documented below, this class inherits methods from the L class.
=over
=item new({ url => url })
Returns a new RDF::Trine::Store object that will act as a proxy for the Linked Data Fragment
endpoint accessible via the supplied $url.
Expertimental: more than one url as an ARRAY reference can be provided for an federated
query over many LDF endpoints.
=item new_with_config( $hashref )
Returns a new RDF::Trine::Store object configured by a hashref with the url as required key.
=item get_statements( $subject, $predicate, $object )
Returns a stream object of all statements matching the specified subject, predicate and objects.
Any of the arguments may be undef to match any value.
=item get_pattern( $bgp )
Returns an iterator object of all bindings matching the specified graph pattern.
=item get_contexts
Not supported.
=item add_statement ( $statement [, $context] )
Not supported.
=item remove_statement ( $statement [, $context])
Not supported.
=item remove_statements ( $subject, $predicate, $object [, $context])
Not supported.
=item count_statements ( $subject, $predicate, $object )
Returns a count of all the statements matching the specified subject, predicate and object.
Any of the arguments may be undef to match any value.
=item size
Returns the number of statements in the store.
=item supports ( [ $feature ] )
Not supported.
=back
=head1 AUTHOR
Patrick Hochstenbach, C<< patrick.hochstenbach at ugent.be >>
=head1 CONTRIBUTORS
Gregory Todd Williams, C<< greg@evilfunhouse.com >>
=head1 LICENSE
This program is free software; you can redistribute it and/or modify it under the terms of either:
the GNU General Public License as published by the Free Software Foundation; or the Artistic License.
See L for more information.
=encoding utf8
=cut