MediaWiki REL1_37
CategoriesRdf.php
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1<?php
19use Wikimedia\Purtle\RdfWriter;
20
28 private const ONTOLOGY_PREFIX = 'mediawiki';
32 private const ONTOLOGY_URL = 'https://www.mediawiki.org/ontology#';
36 public const OWL_URL = 'https://www.mediawiki.org/ontology/ontology.owl';
40 public const FORMAT_VERSION = "1.1";
46 private const SPECIAL_DUMP = 'Special:CategoryDump';
50 private $rdfWriter;
51
52 public function __construct( RdfWriter $writer ) {
53 $this->rdfWriter = $writer;
54 }
55
59 public function setupPrefixes() {
60 $this->rdfWriter->prefix( self::ONTOLOGY_PREFIX, self::ONTOLOGY_URL );
61 $this->rdfWriter->prefix( 'rdfs', 'http://www.w3.org/2000/01/rdf-schema#' );
62 $this->rdfWriter->prefix( 'owl', 'http://www.w3.org/2002/07/owl#' );
63 $this->rdfWriter->prefix( 'schema', 'http://schema.org/' );
64 $this->rdfWriter->prefix( 'cc', 'http://creativecommons.org/ns#' );
65 }
66
72 public function writeCategoryLinkData( $fromName, $toName ) {
73 $titleFrom = Title::makeTitle( NS_CATEGORY, $fromName );
74 $titleTo = Title::makeTitle( NS_CATEGORY, $toName );
75 $this->rdfWriter->about( $this->titleToUrl( $titleFrom ) )
76 ->say( self::ONTOLOGY_PREFIX, 'isInCategory' )
77 ->is( $this->titleToUrl( $titleTo ) );
78 }
79
87 public function writeCategoryData( $categoryName, $isHidden, $pages, $subcategories ) {
88 if ( $pages < 0 ) {
89 // Bugfix for T201119
90 $pages = 0;
91 }
92 $title = Title::makeTitle( NS_CATEGORY, $categoryName );
93 $this->rdfWriter->about( $this->titleToUrl( $title ) )
94 ->say( 'a' )
95 ->is( self::ONTOLOGY_PREFIX, 'Category' );
96 if ( $isHidden ) {
97 $this->rdfWriter->is( self::ONTOLOGY_PREFIX, 'HiddenCategory' );
98 }
99 $titletext = $title->getText();
100 $this->rdfWriter->say( 'rdfs', 'label' )->value( $titletext );
101 $this->rdfWriter->say( self::ONTOLOGY_PREFIX, 'pages' )->value( $pages );
102 $this->rdfWriter->say( self::ONTOLOGY_PREFIX, 'subcategories' )->value( $subcategories );
103 // TODO: do we want files too here? Easy to add, but don't have use case so far.
104 }
105
111 public function labelToUrl( $titleLabel ) {
112 return $this->titleToUrl( Title::makeTitle( NS_CATEGORY, $titleLabel ) );
113 }
114
120 private function titleToUrl( Title $title ) {
121 return $title->getFullURL( '', false, PROTO_CANONICAL );
122 }
123
128 public function getDumpURI() {
129 return $this->titleToUrl( Title::makeTitle( NS_MAIN, self::SPECIAL_DUMP ) );
130 }
131
132}
const PROTO_CANONICAL
Definition Defines.php:196
const NS_MAIN
Definition Defines.php:64
const NS_CATEGORY
Definition Defines.php:78
Helper class to produce RDF representation of categories.
setupPrefixes()
Setup prefixes relevant for the dump.
const SPECIAL_DUMP
Special page for Dump identification.
const ONTOLOGY_URL
Base URL for Mediawiki ontology.
labelToUrl( $titleLabel)
Make URL from title label.
writeCategoryLinkData( $fromName, $toName)
Write RDF data for link between categories.
getDumpURI()
Get URI of the dump for this particular wiki.
__construct(RdfWriter $writer)
const ONTOLOGY_PREFIX
Prefix used for Mediawiki ontology in the dump.
RdfWriter $rdfWriter
const FORMAT_VERSION
Current version of the dump format.
titleToUrl(Title $title)
Convert Title to link to target page.
const OWL_URL
OWL description of the ontology.
writeCategoryData( $categoryName, $isHidden, $pages, $subcategories)
Write out the data for single category.
Represents a title within MediaWiki.
Definition Title.php:48