Author image Aaron Straup Cope
and 1 contributors

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".

flick

  • 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.

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.

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.

$pgk->collect_group_data($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.

$pkg->collect_user_data($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->make_photo_triples(\%data)

Returns an array ref of array refs of the meta data associated with a photo (%data).

If any errors are unencounter an error is recorded via the log method and the method returns undef.

$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#

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#

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#

$obj->namespace_prefix($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->build_user_tag_uri(\@data)

Returns a URL as a string.

$obj->build_global_tag_uri(\@data)

Returns a URL as a string.

$obj->build_user_uri($user_id)

Returns a URL as a string.

$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.

VERSION

1.1

DATE

$Date: 2005/09/28 13:57:30 $

AUTHOR

Aaron Straup Cope <ascope@cpan.org>

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 :

 <?xml version='1.0'?>    
 <rdf:RDF
  xmlns:dc="http://purl.org/dc/elements/1.1/"
  xmlns:a="http://www.w3.org/2000/10/annotation-ns"
  xmlns:acl="http://www.w3.org/2001/02/acls#"
  xmlns:exif="http://nwalsh.com/rdf/exif#"
  xmlns:skos="http://www.w3.org/2004/02/skos/core#"
  xmlns:foaf="http://xmlns.com/foaf/0.1/"
  xmlns:exifi="http://nwalsh.com/rdf/exif-intrinsic#"
  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
  xmlns:computer="x-urn:freebsd:"
  xmlns:i="http://www.w3.org/2004/02/image-regions#"
  xmlns:flickr="x-urn:flickr:"
  xmlns:dcterms="http://purl.org/dc/terms/">

  <flickr:photo rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528">
    <exif:isoSpeedRatings>1250</exif:isoSpeedRatings>
    <exif:apertureValue>336/100</exif:apertureValue>
    <exif:pixelYDimension>960</exif:pixelYDimension>
    <exif:focalLength>4.5 mm</exif:focalLength>
    <acl:access>visbility</acl:access>
    <exif:colorSpace>sRGB</exif:colorSpace>
    <exif:dateTimeOriginal>2005:08:02 18:12:19</exif:dateTimeOriginal>
    <dc:rights>All rights reserved.</dc:rights>
    <exif:shutterSpeedValue>4321/1000</exif:shutterSpeedValue>
    <dc:description></dc:description>
    <exif:exposureTime>0.05 sec (263/5260)</exif:exposureTime>
    <dc:created>2005-08-02T18:12:19-0700</dc:created>
    <dc:dateSubmitted>2005-08-02T18:16:20-0700</dc:dateSubmitted>
    <exif:gainControl>High gain up</exif:gainControl>
    <exif:flash>32</exif:flash>
    <exif:digitalZoomRatio>100/100</exif:digitalZoomRatio>
    <exif:pixelXDimension>1280</exif:pixelXDimension>
    <exif:dateTimeDigitized>2005:08:02 18:12:19</exif:dateTimeDigitized>
    <dc:title>20050802(007).jpg</dc:title>
    <exif:fNumber>f/3.2</exif:fNumber>
    <acl:accessor>public</acl:accessor>
    <dc:creator rdf:resource="http://www.flickr.com/people/35034348999@N01"/>
    <dc:subject rdf:resource="http://www.flickr.com/people/tags/usa"/>
    <dc:subject rdf:resource="http://www.flickr.com/people/tags/california"/>
    <dc:subject rdf:resource="http://www.flickr.com/people/tags/sanfrancisco"/>
    <dc:subject rdf:resource="http://www.flickr.com/people/tags/cameraphone"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140939"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140942"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140945"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140946"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140952"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1142648"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1142656"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1143239"/>
    <a:hasAnnotation rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528#note-1148950"/>
  </flickr:photo>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140942">
    <i:boundingBox>468 141 22 26</i:boundingBox>
    <a:body>*sigh*</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/44124415257@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <dcterms:StillImage rdf:about="http://static.flickr.com/23/30763528_a981fab285_s.jpg">
    <dcterms:relation>Square</dcterms:relation>
    <exifi:height>75</exifi:height>
    <exifi:width>75</exifi:width>
    <dcterms:isVersionOf rdf:resource="http://static.flickr.com/23/30763528_a981fab285_o.jpg"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </dcterms:StillImage>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1142656">
    <i:boundingBox>357 193 81 28</i:boundingBox>
    <a:body>eww!</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/32373682187@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <flickr:user rdf:about="http://www.flickr.com/people/44124415257@N01">
    <foaf:mbox_sha1sum>4f6f211958d5217ef0d10f7f5cd9a69cd66f217e</foaf:mbox_sha1sum>
    <foaf:name>Karl Dubost</foaf:name>
    <foaf:nick>karlcow</foaf:nick>
  </flickr:user>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140939">
    <i:boundingBox>326 181 97 25</i:boundingBox>
    <a:body>Did you see that this shirt makes me a beautiful breast?</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/44124415257@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <flickr:tag rdf:about="http://www.flickr.com/photos/35034348999@N01/tags/usa">
    <skos:prefLabel>usa</skos:prefLabel>
    <dc:creator rdf:resource="http://www.flickr.com/people/35034348999@N01"/>
    <dcterms:isPartOf rdf:resource="http://flickr.com/photos/tags/usa"/>
  </flickr:tag>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140952">
    <i:boundingBox>9 205 145 55</i:boundingBox>
    <a:body>Do you want my opinion? There's a love affair going on here… Anyway. Talking non sense. We all know Heather is committed to Flickr. She even only dresses at FlickrApparel. Did they say &amp;quot;No Logo&amp;quot;. Doh Dude.</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/44124415257@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <dcterms:StillImage rdf:about="http://static.flickr.com/23/30763528_a981fab285_m.jpg">
    <dcterms:relation>Small</dcterms:relation>
    <exifi:height>180</exifi:height>
    <exifi:width>240</exifi:width>
    <dcterms:isVersionOf rdf:resource="http://static.flickr.com/23/30763528_a981fab285_o.jpg"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </dcterms:StillImage>

  <flickr:tag rdf:about="http://www.flickr.com/photos/35034348999@N01/tags/cameraphone">
    <skos:prefLabel>cameraphone</skos:prefLabel>
    <dc:creator rdf:resource="http://www.flickr.com/people/35034348999@N01"/>
    <dcterms:isPartOf rdf:resource="http://flickr.com/photos/tags/cameraphone"/>
  </flickr:tag>

  <computer:user rdf:about="x-urn:dhclient#asc">
    <foaf:name>Aaron Straup Cope</foaf:name>
    <foaf:nick>asc</foaf:nick>
  </computer:user>

  <flickr:user rdf:about="http://www.flickr.com/people/34427469121@N01">
    <foaf:mbox_sha1sum>216d56f03517c68e527c5b970552a181980c4389</foaf:mbox_sha1sum>
    <foaf:name>George Oates</foaf:name>
    <foaf:nick>George</foaf:nick>
  </flickr:user>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140946">
    <i:boundingBox>355 31 103 95</i:boundingBox>
    <a:body>(Yes… I love you heather, you are my dream star)</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/44124415257@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <rdf:Description rdf:about="x-urn:flickr:tag">
    <rdfs:subClassOf rdf:resource="http://www.w3.org/2004/02/skos/core#Concept"/>
  </rdf:Description>

  <rdf:Description rdf:about="file:///home/asc/photos/2005/08/02/20050802-30763528-20050802_007.jpg">
    <dcterms:created>2005-09-25T15:16:28Z</dcterms:created>
    <dc:creator rdf:resource="x-urn:dhclient#asc"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </rdf:Description>

  <rdf:Description rdf:about="file:///home/asc/photos/2005/08/02/20050802-30763528-20050802_007_m.jpg">
    <dcterms:created>2005-09-25T15:16:28Z</dcterms:created>
    <dc:creator rdf:resource="x-urn:dhclient#asc"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </rdf:Description>

  <rdf:Description rdf:about="x-urn:freebsd:user">
    <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Person"/>
  </rdf:Description>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1143239">
    <i:boundingBox>184 164 50 50</i:boundingBox>
    <a:body>Baaaaarp!</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/34427469121@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <rdf:Description rdf:about="file:///home/asc/photos/2005/08/02/20050802-30763528-20050802_007_s.jpg">
    <dcterms:created>2005-09-25T15:16:28Z</dcterms:created>
    <dc:creator rdf:resource="x-urn:dhclient#asc"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </rdf:Description>

  <dcterms:StillImage rdf:about="http://static.flickr.com/23/30763528_a981fab285_t.jpg">
    <dcterms:relation>Thumbnail</dcterms:relation>
    <exifi:height>75</exifi:height>
    <exifi:width>100</exifi:width>
    <dcterms:isVersionOf rdf:resource="http://static.flickr.com/23/30763528_a981fab285_o.jpg"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </dcterms:StillImage>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1140945">
    <i:boundingBox>433 103 50 50</i:boundingBox>
    <a:body>(fuck… fuck…)</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/44124415257@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <flickr:user rdf:about="http://www.flickr.com/people/32373682187@N01">
    <foaf:mbox_sha1sum>62bf10c8d5b56623226689b7be924c64dee5e94a</foaf:mbox_sha1sum>
    <foaf:name>heather powazek champ</foaf:name>
    <foaf:nick>heather</foaf:nick>
  </flickr:user>

  <rdf:Description rdf:about="x-urn:flickr:user">
    <rdfs:subClassOf rdf:resource="http://xmlns.com/foaf/0.1/Person"/>
  </rdf:Description>

  <flickr:tag rdf:about="http://www.flickr.com/photos/35034348999@N01/tags/california">
    <skos:prefLabel>california</skos:prefLabel>
    <dc:creator rdf:resource="http://www.flickr.com/people/35034348999@N01"/>
    <dcterms:isPartOf rdf:resource="http://flickr.com/photos/tags/california"/>
  </flickr:tag>

  <dcterms:StillImage rdf:about="http://static.flickr.com/23/30763528_a981fab285.jpg">
    <dcterms:relation>Medium</dcterms:relation>
    <exifi:height>375</exifi:height>
    <exifi:width>500</exifi:width>
    <dcterms:isVersionOf rdf:resource="http://static.flickr.com/23/30763528_a981fab285_o.jpg"/>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </dcterms:StillImage>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1142648">
    <i:boundingBox>202 224 50 50</i:boundingBox>
    <a:body>dude! who did this?</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/32373682187@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <dcterms:StillImage rdf:about="http://static.flickr.com/23/30763528_a981fab285_o.jpg">
    <dcterms:relation>Original</dcterms:relation>
    <exifi:height>960</exifi:height>
    <exifi:width>1280</exifi:width>
    <rdfs:seeAlso rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </dcterms:StillImage>

  <flickr:user rdf:about="http://www.flickr.com/people/35034348999@N01">
    <foaf:mbox_sha1sum>a4d1b5e38db5e2ed4f847f9f09fd51cf59bc0d3f</foaf:mbox_sha1sum>
    <foaf:name>Aaron</foaf:name>
    <foaf:nick>straup</foaf:nick>
  </flickr:user>

  <flickr:note rdf:about="http://www.flickr.com/photos/35034348999@N01/30763528#note-1148950">
    <i:boundingBox>342 197 28 33</i:boundingBox>
    <a:body>Is that just one big boob, or...?</a:body>
    <i:regionDepicts rdf:resource="http://static.flickr.com/23/30763528_a981fab285.jpg"/>
    <a:author rdf:resource="http://www.flickr.com/people/34427469121@N01"/>
    <a:annotates rdf:resource="http://www.flickr.com/photos/35034348999@N01/30763528"/>
  </flickr:note>

  <rdf:Description rdf:about="x-urn:flickr:note">
    <rdfs:subClassOf rdf:resource="http://www.w3.org/2000/10/annotation-nsAnnotation"/>
  </rdf:Description>

  <flickr:tag rdf:about="http://www.flickr.com/photos/35034348999@N01/tags/sanfrancisco">
    <skos:prefLabel>san francisco</skos:prefLabel>
    <skos:altLabel>sanfrancisco</skos:altLabel>
    <dc:creator rdf:resource="http://www.flickr.com/people/35034348999@N01"/>
    <dcterms:isPartOf rdf:resource="http://flickr.com/photos/tags/sanfrancisco"/>
  </flickr:tag>

 </rdf:RDF>

SEE ALSO

Net::Flickr::API

RDF::Simple

TO DO

  • Methods for describing more than just a photo; groups, tags, etc.

  • Proper Creative Commons RDF blobs

  • 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 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.

1 POD Error

The following errors were encountered while parsing the POD:

Around line 1160:

Non-ASCII character seen before =encoding in 'here…'. Assuming UTF-8