NAME
Net::Flickr::RDF - a.k.a RDF::Describes::Flickr
SYNOPSIS
use Net::Flickr::RDF;
use Config::Simple;
use IO::AtomicFile;
my $cfg = Config::Simple->new("/path/to/my.cfg");
my $rdf = Net::Flickr::RDF->new($cfg);
my $fh = IO::AtomicFile->open("/foo/bar.rdf","w");
$rdf->describe_photo({photo_id => 123,
secret => 567,
fh => \*$fh});
$fh->close();
DESCRIPTION
Describe Flickr photos as RDF.
This package inherits from *Net::Flickr::API*.
OPTIONS
Options are passed to Net::Flickr::Backup using a Config::Simple object
or a valid Config::Simple config file. Options are grouped by "block".
flickr
* api_key
String. *required*
A valid Flickr API key.
* api_secret
String. *required*
A valid Flickr Auth API secret key.
* auth_token
String. *required*
A valid Flickr Auth API token.
rdf
* query_geonames
Boolean.
If true and a photo has geodata (latitude, longitude) associated
with it, then the geonames.org database will be queried for a
corresponding match. Data will be added as properties of the photo's
geo:Point description. For example :
-122.025151
16
visbility
37.417839
public
PPLX
US
CA
California
Santa Clara
2
Default is false.
PACKAGE METHODS
__PACKAGE__->new($cfg)
Where $cfg is either a valid *Config::Simple* object or the path to a
file that can be parsed by *Config::Simple*.
Returns a *Net::Flickr::RDF* object.
PACKAGE METHODS YOU MAY CARE ABOUT
__PACKAGE__->build_photo_uri(\%data)
Returns a URL as a string.
__PACKAGE__->build_geo_uri(\%data)
__PACKAGE__->build_user_tag_uri(\@data)
Returns a URL as a string.
__PACKAGE__->build_global_tag_uri(\@data)
Returns a URL as a string.
__PACKAGE__->build_machinetag_uri(\@data)
Returns a URL as a string.
__PACKAGE__->build_user_uri($user_id)
Returns a URL as a string.
__PACKAGE__->build_group_uri($group_id)
Returns a URL as a string.
__PACKAGE__->build_grouppool_uri($group_id)
Returns a URL as a string.
__PACKAGE__->build_photoset_uri(\%set_data)
Returns a URL as a string.
__PACKAGE__->prune_triples(\@triples)
Removes duplicate triples from *@triples*. Returns an array reference.
OBJECT METHODS YOU SHOULD CARE ABOUT
$obj->describe_photo(\%args)
Valid arguments are :
* photo_id
Int. *required*
* secret
String.
* fh
File-handle.
Default is STDOUT.
Returns true or false.
OBJECT METHODS YOU MAY CARE ABOUT
$obj->collect_photo_data($photo_id,$secret)
Returns a hash ref of the meta data associated with a photo.
If any errors are unencounter an error is recorded via the log method
and the method returns undef.
$obj->collect_group_data($group_id)
Returns a hash ref of the meta data associated with a group.
If any errors are unencounter an error is recorded via the log method
and the method returns undef.
$obj->collect_user_data($user_id)
Returns a hash ref of the meta data associated with a user.
If any errors are unencounter an error is recorded via the log method
and the method returns undef.
$obj->collect_photoset_data($photoset_id)
Returns a hash ref of the meta data associated with a photoset.
If any errors are unencounter an error is recorded via the log method
and the method returns undef.
$obj->collect_cc_data()
Returns a hash ref of the Creative Commons licenses used by Flickr.
If any errors are unencounter an error is recorded via the log method
and the method returns undef.
$obj->collect_comment_data()
Returns a hash ref of comments made about a photo.
$obj->make_photo_triples(\%data)
Returns an array ref (or alist in a wantarray context) of array refs of
the meta data associated with a photo (*%data*).
$obj->make_user_triples(\%user_data)
Returns an array ref (or list in a wantarray context) of array refs of
the meta data associated with a user (*%user_data*).
$obj->make_tag_triples(\@tag_data)
Returns an array ref (or list in a wantarray context) of array refs of
the meta data associated with a tag (*@tag_data*).
$pkg->make_photoset_triples(\%set_data)
Returns an array ref (or list in a wantarray context) of array refs of
the meta data associated with a photoset (*%set_data*).
$obj->make_geo_triples(\%geo_data)
$obj->make_flickr_places_triples(\%geo_data)
$obj->make_geonames_triples(\%geo_data)
$obj->make_group_triples(\%group_data)
Returns an array ref (or list in a wantarray context) of array refs of
the meta data associated with a group (*%group_data*).
$obj->make_grouppool_triples(\%group_data)
Returns an array ref (or list in a wantarray context) of array refs of
the meta data associated with a group pool (*%group_data*).
$obj->make_cc_triples($url)
Returns an array ref (or list in a wantarray context) of array refs of
the meta data associated with a Creative Commons license (*$url*).
$obj->make_comment_triples(\%data)
Returns an array ref (or alist in a wantarray context) of array refs of
the meta data associated with a photo comment (*%data*).
$obj->geodata_from_tags(\%data)
Try to parse out geolocative data from a collection of tag data.
Returns a hash ref (containing 'lat' and 'long' keys) on success or
undef if there were no matches.
$obj->namespaces()
Returns a hash ref of the prefixes and namespaces used by
*Net::Flickr::RDF*
The default key/value pairs are :
a http://www.w3.org/2000/10/annotation-ns
acl http://www.w3.org/2001/02/acls#
atom
http://www.w3.org/2005/Atom/
cc http://web.resource.org/cc/
dc http://purl.org/dc/elements/1.1/
dcterms
http://purl.org/dc/terms/
exif
http://nwalsh.com/rdf/exif#
exifi
http://nwalsh.com/rdf/exif-intrinsic#
flickr
x-urn:flickr:
foaf
http://xmlns.com/foaf/0.1/#
geo http://www.w3.org/2003/01/geo/wgs84_pos#
geoname
http://www.geonames.org/onto#
i http://www.w3.org/2004/02/image-regions#
rdf http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs
http://www.w3.org/2000/01/rdf-schema#
skos
http://www.w3.org/2004/02/skos/core#
ymaps
urn:yahoo:maps
$obj->add_namespace($prefix, $namespace)
Add a prefix and namespace URI to the list of known namespaces.
This method returns a string containing the prefix you should use for
the namespace URI passed. If the prefix passed to the method is already
reserved for another namespace the method will return the following
string:
"nfr_" + I
$obj->namespace_prefix($uri)
Return the namespace prefix for *$uri*
$obj->uri_shortform($prefix,$name)
Returns a string in the form of *prefix*:*property*. The property is the
value of $name. The prefix passed may or may be the same as the prefix
returned depending on whether or not the user has defined or redefined
their own list of namespaces.
Unless this package is subclassed the prefix passed to the method is
assumed to be one of prefixes in the default list of namespaces.
$obj->api_call(\%args)
Valid args are :
* method
A string containing the name of the Flickr API method you are
calling.
* args
A hash ref containing the key value pairs you are passing to
*method*
If the method encounters any errors calling the API, receives an API
error or can not parse the response it will log an error event, via the
log method, and return undef.
Otherwise it will return a *XML::LibXML::Document* object (if
XML::LibXML is installed) or a *XML::XPath* object.
$obj->log()
Returns a *Log::Dispatch* object.
$obj->serialise_triples(\@triples,\*$fh)
Print *@triples* as RDF/XML to a filehandle (*$fh*). If no filehandle is
defined, prints to STDOUT.
$obj->serialize_triples(\@triples,\*$fh)
An alias for *serialise_triples*
VERSION
2.2
DATE
$Date: 2010/12/19 19:06:12 $
AUTHOR
Aaron Straup Cope
CONTRIBUTORS
Thomas Sibley
EXAMPLES
CONFIG FILES
This is an example of a Config::Simple file used to collect RDF data
from Flickr
[flickr]
api_key=asd6234kjhdmbzcxi6e323
api_secret=s00p3rs3k3t
auth_token=123-omgwtf4u
RDF
This is an example of an RDF dump for a photograph backed up from Flickr
:
http://flickr.com/photos/straup/2269291707/
2008-02-17T10:36:02Z
Untitled Set #2008
filtr
Medium
375
500
San Francisco
California
San Francisco
kH8dLOubBZRvX_YZ
United States
Original
1944
2592
cameraphone
filtr
sanfrancisco
sanfrancisco
heather powazek champ
heather
Square
75
75
Thumbnail
75
100
Flash did not fire, auto mode
100/100
100
2592
297/100
1944
5.6 mm
2008-02-16T14:22:32PST
sRGB
f/2.8
2008-02-16T14:22:32PST
7643/1000
0.005 sec (1/200)
cameraphone
b0571f7ec59c0b59e19a3f054f78d953cb32b071
Aaron Straup Cope
straup
Small
180
240
process
filtr
locality
geonames
5391959
2008-02-17T10:36:02Z
filtr
filtr
visbility
Ambient Pork
n82
All rights reserved.
public
5391959
2008-02-16T14:22:32-0800
2008-02-16T14:32:59-0800
Aaron Straup Cope
asc
2.1:1203244560
2008-02-17T02:36:00-0800
filtr
camera
ph
6065-2269291707-72157603921497994
2008-02-16T16:39:31
best. title. ever.
5391959
n82
PPLX
US
CA
23
California
San Francisco County
n82
Large
768
1024
2008-02-17T10:36:02Z
SEE ALSO
Net::Flickr::API
RDF::Simple
TO DO
* Methods for describing more than just a photo; groups, tags, etc.
* Update bounding boxes to be relative to individual images
* Proper tests
Patches are welcome.
BUGS
Please report all bugs via http://rt.cpan.org/
LICENSE
Copyright (c) 2005-2008 Aaron Straup Cope. All Rights Reserved.
This is free software. You may redistribute it and/or modify it under
the same terms as Perl itself.