+<?php
+/**
+ * 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 2 of the License, 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.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ */
+use Wikimedia\Purtle\RdfWriter;
+use Wikimedia\Purtle\RdfWriterFactory;
+use Wikimedia\Rdbms\IDatabase;
+
+require_once __DIR__ . '/Maintenance.php';
+
+/**
+ * Maintenance script to provide RDF representation of the category tree.
+ *
+ * @ingroup Maintenance
+ * @since 1.30
+ */
+class DumpCategoriesAsRdf extends Maintenance {
+ /**
+ * @var RdfWriter
+ */
+ private $rdfWriter;
+ /**
+ * Categories RDF helper.
+ * @var CategoriesRdf
+ */
+ private $categoriesRdf;
+
+ public function __construct() {
+ parent::__construct();
+
+ $this->addDescription( "Generate RDF dump of categories in a wiki." );
+
+ $this->setBatchSize( 200 );
+ $this->addOption( 'output', "Output file (default is stdout). Will be overwritten.",
+ false, true );
+ $this->addOption( 'format', "Set the dump format.", false, true );
+ }
+
+ /**
+ * Produce row iterator for categories.
+ * @param IDatabase $dbr Database connection
+ * @return RecursiveIterator
+ */
+ public function getCategoryIterator( IDatabase $dbr ) {
+ $it = new BatchRowIterator(
+ $dbr,
+ 'page',
+ [ 'page_title' ],
+ $this->mBatchSize
+ );
+ $it->addConditions( [
+ 'page_namespace' => NS_CATEGORY,
+ ] );
+ $it->setFetchColumns( [ 'page_title', 'page_id' ] );
+ return $it;
+ }
+
+ /**
+ * Get iterator for links for categories.
+ * @param IDatabase $dbr
+ * @param array $ids List of page IDs
+ * @return Traversable
+ */
+ public function getCategoryLinksIterator( IDatabase $dbr, array $ids ) {
+ $it = new BatchRowIterator(
+ $dbr,
+ 'categorylinks',
+ [ 'cl_from', 'cl_to' ],
+ $this->mBatchSize
+ );
+ $it->addConditions( [
+ 'cl_type' => 'subcat',
+ 'cl_from' => $ids
+ ] );
+ $it->setFetchColumns( [ 'cl_from', 'cl_to' ] );
+ return new RecursiveIteratorIterator( $it );
+ }
+
+ public function addDumpHeader( $timestamp ) {
+ global $wgRightsUrl;
+ $licenseUrl = $wgRightsUrl;
+ if ( substr( $licenseUrl, 0, 2 ) == '//' ) {
+ $licenseUrl = 'https:' . $licenseUrl;
+ }
+ $this->rdfWriter->about( wfExpandUrl( '/categoriesDump', PROTO_CANONICAL ) )
+ ->a( 'schema', 'Dataset' )
+ ->a( 'owl', 'Ontology' )
+ ->say( 'cc', 'license' )->is( $licenseUrl )
+ ->say( 'schema', 'softwareVersion' )->value( CategoriesRdf::FORMAT_VERSION )
+ ->say( 'schema', 'dateModified' )
+ ->value( wfTimestamp( TS_ISO_8601, $timestamp ), 'xsd', 'dateTime' )
+ ->say( 'schema', 'isPartOf' )->is( wfExpandUrl( '/', PROTO_CANONICAL ) )
+ ->say( 'owl', 'imports' )->is( CategoriesRdf::OWL_URL );
+ }
+
+ public function execute() {
+ $outFile = $this->getOption( 'output', 'php://stdout' );
+
+ if ( $outFile === '-' ) {
+ $outFile = 'php://stdout';
+ }
+
+ $output = fopen( $outFile, 'w' );
+ $this->rdfWriter = $this->createRdfWriter( $this->getOption( 'format', 'ttl' ) );
+ $this->categoriesRdf = new CategoriesRdf( $this->rdfWriter );
+
+ $this->categoriesRdf->setupPrefixes();
+ $this->rdfWriter->start();
+
+ $this->addDumpHeader( time() );
+ fwrite( $output, $this->rdfWriter->drain() );
+
+ $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] );
+
+ foreach ( $this->getCategoryIterator( $dbr ) as $batch ) {
+ $pages = [];
+ foreach ( $batch as $row ) {
+ $this->categoriesRdf->writeCategoryData( $row->page_title );
+ $pages[$row->page_id] = $row->page_title;
+ }
+
+ foreach ( $this->getCategoryLinksIterator( $dbr, array_keys( $pages ) ) as $row ) {
+ $this->categoriesRdf->writeCategoryLinkData( $pages[$row->cl_from], $row->cl_to );
+ }
+ fwrite( $output, $this->rdfWriter->drain() );
+ }
+ fflush( $output );
+ if ( $outFile !== '-' ) {
+ fclose( $output );
+ }
+ }
+
+ /**
+ * @param string $format Writer format
+ * @return RdfWriter
+ */
+ private function createRdfWriter( $format ) {
+ $factory = new RdfWriterFactory();
+ return $factory->getWriter( $factory->getFormatName( $format ) );
+ }
+}
+
+$maintClass = "DumpCategoriesAsRdf";
+require_once RUN_MAINTENANCE_IF_MAIN;
dépôts / lhc / web / wiklou.git / commitdiff